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PCL 6000 User Reference Manual

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1. elle lel Ie fe di i i a BEER x o Ll TOTT HK amp 9 EIK i 4 ES eoo o saara METER CKT T13 p 2 91B7444 Rev B Transmitter Audio Power Supply Schematic p 1 of 3 Moseley PCL 6000 Document No 602 13375 01 Rev B 7 106 Schematic and Assembly Drawings 5 Z2 4 x 8 s g i 5 SR B g yo 8 ee 12V 720 P 1 IPA SUPPLY 00 a em al Ls 5 KI z 1 E i z lt 5 oL A LEIH 5 g x i OL RM VA SZ d 8 91B7444 Rev B Transmitter Audio Power Supply Schematic p 2 of 3 Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 7 107 z haa 073 x R10 CW R200 10K LEVE
2. 930 03462 01 Rev H Transmitter RF Module Assembly Moseley PCL 6000 Document No 602 13375 01 Rev B Schematic and Assembly Drawings 7 114 SAd A3Y ely n a o Vu a d ML 02H PA Yr d Old 634 40 KZT az zo CH 0gL 8 Gi ne L 404 GSTIVLSNI VASIH 10 0 49000 4900 La lro Document No 602 13375 01 Rev B 930 12053 02 Rev B RF Amplifier 1 7GHz 6w Schematic p 1 of 2 Moseley PCL 6000 Moseley PCL6000 7 115 930 12053 02 Rev B RF Amplifier 1 7GHz 6w Schematic p 2 of 2 Moseley PCL 6000 Document No 602 13375 01 Rev B 7 116 Schematic and Assembly Drawings KS sei O 930 12052 02 REV B RF Amplifier 1 7 GHz 6w Assembly Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 7 117 Ce EEE x ir L amp E D 1 Tingow 4a L ANOD Tad t a H H q net
3. amp z T E 7 d z i z e zS E U XOL NJ LEIH i H e e PO GK VA m 91A7444 Rev D Transmitter Audio Power Supply Schematic p 2 of 3 Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 7 37 z haa 073 x R10 CW R200 10K LEVEL E3 s E B 25 ou U gt 2 E D 5 E A cw 1002 15V lt T2 1 OF 3 FOR NOTES 8 E PAGE FLAGS THIS PAGE SEI 91A7444 Rev D Transmitter Audio Power Supply Schematic p 3 of 3 Moseley PCL 6000 Document No 602 13375 01 Rev B 7 38 Schematic and Assembly Drawings
4. mu M81 LV oly Zd BZd Vd 89d Tid OL 539 s oi O SSJINN S3LON n in ldl yS 1S 614 914 CH L 89 Id9 1950 22 19 Jgd SIHL SHOIVNOISIQ JONJBNTJJN 600 10227 01 REV H Transmitter RF Module Schematic p 1 of 4 Document No 602 13375 01 Rev B Moseley PCL 6000 7 8 Schematic and Assembly Drawings HIS PAGE FLAGS 78 R80 R57 600 10227 01 REV H Transmitter RF Module Schematic p 2 of 4 Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 7 9 a M pz Ge 081 L 25 E A V xe t5 2 0 8 uc E Ke m JpF 8 y a lt a TOR 6 ENCE DESIGN x leg a o 5 5 5 S8 nsls lii E SSES ch _ lt I o o x m D o z z i 8 E o w o e Oo ole fe J 5 gt pu N ole I GIS i NIS amp
5. NN Sr Moseley PCL 6000 21B2891 4 Rev D 6020 Receiver Final Assembly Document No 602 13375 01 Rev B Moseley PCL6000 7 49 A A e A A D Z E e p B4 lt i 1 ka 4 y ul NS ES A gt e u W a o u mud B4 S 9 m zi x i m s A x u 5 a ms Je Du eo Or ND B Li e o S e fill ac e 21B2892 4 Rev D 6030 Receiver Final Assembly Moseley PCL 6000 Document No 602 13375 01 Rev B 7 50 Schematic and Assembly Drawings Rea FRONT PANEL o lt 88 u 25 i g E Ax gt in ib E 2 e S Rank o s A j o EE i gt gt ma to x d x lt A o r P3 2 VN oS ON o SE
6. MUX OUT MONG FOR NOTES 1 02 05 Ge ms re ol ox 2 ox J 5 a 4m e J EI lt A a a B 600 10710 01 Rev B Receiver Audio Power Supply Schematic p 3 of 4 Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 7 53 MI Te p 3 MONO PG MONO BASEBAND TER INPUT FI SEE PAGE 1 OF 4 FOR NOTES 600 10710 01 Rev B Receiver Audio Power Supply Schematic p 4 of 4 Moseley PCL 6000 Document No 602 13375 01 Rev B 7 54 Schematic and Assembly Drawings 20B3024 Rev C Receiver Audio Power Supply Assembly Moseley PCL 6000 Document No 602 13375 01 Rev B 7 55 Moseley PCL6000 c TONINOI lt
7. m M 6 x 7 a gar c o A s l3ls E 55 iz iz n FEE 5 z o 5 9 z2 5 lei sla o Wb x ll gt N z oL Z d ECK 6 ol n x Tom Z x uot s m z tcx a Ella 2 5 a o zig o Ke io z 818 2 2 Les E 11 g 8 ok 5 d 5 6 SIS o ou S KO i 5 z d a A i 600 10228 01 Rev K Receiver RF Module Schematic p 3 of 4 Moseley PCL 6000 Document No 602 13375 01 Rev B 7 126 Schematic and Assembly Drawings i x E i a gt a m x o ul FL1 01 Mi FMX1 5Hz 1 7 RIP TR A 60 MH 3 RO CI ale e elelelels z z Sn nn S S S AIR RIR IR RS S S lt S S IS S IS S IS IS D 0 D A A a 5 5 X pu gt a oo EMA 28r olli SAS a 3 AE o alo D 8 SIS S gt ale 8 g als ci 2 2 9 ES B g olala o 2 S o g S e e als 9 i 8 9 4 ole o o s oT D e DEA 5 gt ul 1 l l 2 g E q S gt b d x 5 8 x b S E N 8 z lt a 5 gt lt x lt moo 5 m S REFEREI 600 10228 01 Rev K Receiver RF Module Schematic p 4 of 4 Moseley PCL 6000 Document No
8. TRANSFORMER 21B2915 Rev D 6060 Receiver Final Assembly Moseley PCL 6000 Document No 602 13375 01 Rev B 7 82 Schematic and Assembly Drawings R182 10K MTR OUT T 3 i lt z A m p V D gt o f 2 E uy 2i ix us Boos i E Ax 2 E 2 gt HESS os E x d o r PPS KAA HO 3 gt N M 5495 m g i gg o x 8 Hi 21 gt lt d o 6 o EE ee eg az es An THER OOS NOTH OR MORSE HAN THOR oo ARAN E AT XMM x e C2 E o E c Lo a P 2 u m o Le a E amp E zu o gm Bai lt ES bana al ta On E gt CA oul z E kai oe 5 O Q c E 5 o s 9019 600 10710 01 Rev B Receiver Audio Power Supply Schematic p 1 of 4 Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 7 83 E TO p 3 CMPOSIT 6 tee V COMP o p MONO ION
9. x SEN ae E 3 NES a ENG 8d o 2 o olo 8 8 818 ei o ojo S 3 alg 5 2 2 lalololo a slelz s a jala a i 5 9 m EISEM s bai Bin la Ss a mm olo o PEERS SIS R NININA s lt li 1 1 li olalelrs o lol o INIS IG S IO Ea a me lt 2 z lt 5 N a 5 Le z m am 3 e 2 amp a a E E x v t 8 lt a E m gt E m DE 57 aud 8 ia e IB 5 3 a EE D O m 5 g SS 5 5 g E a ul x a E E S s M i 3 a m we 2 F 125 be D Li al zz 5 ES D ZE S8 nat S E eo E L o p O ti o E e um Z o S HE 5 el 8 PSALM L O 83 sa 4 oo Lu E ea m a E ki o iul RE 7 90 Schematic and Assembly Drawings Moseley PCL 6000 7dBm 6019 HUOOL AAA A 611 usu SS s m D D p e S22 A B Si m E 3 a o i 5 z a D x 5 co o v o z E S E i S o lt 5o SN 3 6 8 a S e z AALER RI SISI ISIS IS IS S S GIS o o eo 0 0 5 o
10. lt M 7HNS ZL 950 j3M MOLIIVAVI ee LL S NYHL 4314133 V V 13S E 3l Tid OL SIOVAHILNI x96 8Zd YZd 89d OldVdv Tid OL S39ydadL a OH 49Vd SIHI S5V73 gn in dl Y i 250 39Vd SIHL IHLO SSIINN S310 HO NI 38V S3 YIVA HOLSIS3M VH3dO TINNVHIOILTAN OV 3431 J3NNVHOIL NI n 614 914 234 LN v82 140 122 12 SHOIVN9IS3d 3ON3H113H 600 10228 01 Rev K Receiver RF Module Schematic p 1 of 4 Document No 602 13375 01 Rev B Moseley PCL 6000 7 22 Schematic and Assembly Drawings gt SE LI kt 37M 9 4 S NW K A n 2 NT S Mt VN 9c c 4 SX gS X RP gt x sx 600 10228 01 Rev K Receiver RF Module Schematic p 2 of 4 Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 7 23 LIER L JE O VERY DI RE dBm 0 s 3 3 3 3 3 alele e ale S 8 ka ND eo xd zy Es a8 lt N m uo 4 S weve y ale D z xm de
11. o 4 S a L velo R188 YGLYNL 2 DEN p i E O 2 E e AMT CLM YSIENL sd zr wi woa k D et 918 Sto ees i lil osx ux Bre a lt 8 amp E THI FLAGS 600 10710 01 Rev B Receiver Audio Power Supply Schematic p 1 of 4 Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 7 51 MUX C54 4 2 EJ H KE E 8 2 A 1 S gt lt WE Lut ANAS gt D 91 4 8 doozg OSZ HUOL 440028 Huegoe AE AIT 1 UCC Cm Ce o ore Su S1 E Di 5 RS est 2 e NOOL 2 ase 2 STATU s E n ELARI DE a 600 10710 01 Rev B Receiver Audio Power Supply Schematic p 2 of 4 Moseley PCL 6000 Document No 602 13375 01 Rev B 7 52 Schematic and Assembly Drawings ac ge 2 Be 5 lt 48 Sr g BR a 100 8 p 2 19 KI BASEBAND MPOSIT pil 72 PGM Lv lo mms s gr H
12. 20B2949 Rev G FM Demod 6030 Assembly Moseley PCL 6000 Document No 602 13375 01 Rev B 7 132 Schematic and Assembly Drawings 7 5 Multichannel Option DESCRIPTION REV LEVEL Channel Control Assembly 20C3104 Channel Control Schematic 917515 PCL6010 Multichannel Option 910 10121 02 PCL6020 Multichannel Option 910 08614 01 B PCL6030 Multichannel Option 910 08796 01 B NOTICE This section contains schematic and assembly drawings referred to in Sections 1 and 4 For information on individual drawings refer to Section 1 under System Description and or Section 4 under Module Description Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 7 133 RF MODULE 20C3104 Rev A Channel Control Assembly Moseley PCL 6000 Document No 602 13375 01 Rev B 7 134 Schematic and Assembly Drawings 917515 Rev A Channel Control Schematic 1 of 4 Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 7 135 917515 Rev A Channel Control Schematic 2 of 4 Moseley PCL 6000 Document No 602 13375 01 Rev B 7 136 Schematic and Assembly Drawings 917515 Rev A Channel Control Schematic 3 of 4 Moseley PCL
13. 1 2 1 3 1 PCL6020 PCL6030 PCL6060 Composite System nasa 1 2 1 3 2 PCL6020 PCL6030 PCL6060 Monaural System sse 1 3 1 3 3 PCL6010 Transmitter Specifications n eene enne ener nennen 1 3 1 3 4 1 3 4 PCL6020 PCL6030 PCL6060 Receiver Specifications 1 4 1 4 System D SCrIpti0n a 1 5 1 4 1 PCE6010 Transmitter Gi 1 5 1 4 2 PCL6020 PCL6030 PCL6060 Receivers n s 1 8 2 INSTALLATION EEE 2 1 2 1 Bird did 2 1 VEM WE E 2 1 2 2 1 AC Line Voltage Sele tioi SE 2 1 2 2 2 DE Option 2 3 2 3 Pre installation Checkout emeemeeneoosenoonsoosonaoononnooosenoensooo nae enonno tosta onne on senonaenoonae en suse eo sone 2 3 pr EMEN COS DEM M 2 5 KE WEE ER ET E 2 6 2 6 Transmission Cables nae wan n oenonsenoonae nen onae en onae asie 2 7 27 Program and Multiplex Installation Transmitter 2 9 2 8 Program and Multiplex Installation Receiver 2 12 29 Main Standby Interconnect 2
14. MUTE LOGIC 113 FLAGS THIS PAGE CG 600 10710 01 Rev B Receiver Audio Power Supply Schematic p 2 of 4 Moseley PCL 6000 Document No 602 13375 01 Rev B 7 84 Schematic and Assembly Drawings JA SEBAN F DAS VO M SSe ae z ELE RSS SJ a vool a mown 3 XL 66 ANN vou Moseley PCL 6000 j 8 2 EIE lm lu lt selg 9 3 amp o e ola als ela E 600 10710 01 Rev B Document No 602 13375 01 Receiver Audio Power Supply Schematic p 3 of 4 MUTE POSITION Rev B Li OQ lt I T12 OF 4 FOR NOTES SEE PAG Moseley PCL6000 7 85 15KHz POM T16 9 3 8 60 4 1 ADPHONE HE R72 p 3 T5 IMONO i a 5 e e 5 1 1 Bs w w S x o 5 5 ad lt x 5 SE 2 a 5 IZ x m D E a 600 10710 01 Rev B Receiver Audio Power Supply Schematic p 4 of 4 Mose
15. 20D3023 Rev D Transmitter Audio Power Supply Assembly Moseley PCL 6000 Document No 602 13375 01 Rev B 7 39 Moseley PCL6000 O SSJINN S3LON gt a 31dN09 Ov dr f le SIN L ZHNB CI ASL R Oso 434 10 EI kl N 350 v G S8 e 5 s DES d Touinoo OJAL ZL ER BZd Vd 89d Tid OL 539 Tuc s oi oze yel 431114 doo ML LV en N OLY SLY 10L8 Z8 IdL bkS IS 614 914 lt LH 89 IdO 1950 22 15 Dvd SIRI SHOIVNOISTU JONJETIJU Document No 602 13375 01 Rev B 600 10227 01 REV H Transmitter RF Module Schematic p 1 of 4 Moseley PCL 6000 7 40 Schematic and Assembly Drawings HIS PAGE FLAGS 78 R80 R57 600 10227 01 REV H Transmitter RF Module Schematic p 2 of 4 Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 7 41 a M pz Ge 081 L 25 E A V
16. f m o gt lu ii A Sa gt o i 4 U m ONS w Tit X n o nf o A EL o e lt G gt e Ge t TRANSFORNER PI 910 08614 01 Rev B PCL 6020 Multichannel Option Moseley PCL 6000 Document No 602 13375 01 Rev B 7 140 Schematic and Assembly Drawings 5j a ea 3d 1 JC Ji i Tanva 0 1 TWN i aen ANG9 180 DOE Ly All g d OT 7 LZ E ES r ip i p 8O f H gt ti f q AD N NU Q D 2 UR q rie Zz amp i c H q 4 y d il II q d E m gt H i i w 3 E a e m will NEP I 2 lt E E AT s e 8 i x lt x z c i d il o a LER KS Im d T N 2 D gt e N E Z H 1 amp od Ca CC W
17. Figure 2 9 Main Standby Transmitter Interconnect Mono Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 2 17 2 9 2 Receiver Interconnect Other STL Receivers The PCL6000 receivers may be used with other Moseley STL receivers such as the PCL505 and PCL303 may be used in a main standby configuration provided that a TPR 2 is used to perform the switching between the two receivers A typical installation is detailed in Figure 2 10 Note that only one multiplex output can be used from the receivers however there are two parallel multiplex outputs on the TPR 2 to provide the control and secondary audio multiplex outputs AUTO TRANSFER WITHOU lt Figure 2 10 Main Standby Receiver Interconnect Other STL Receivers Moseley PCL 6000 Document No 602 13375 01 Rev B 2 18 Installation 2 9 3 Receiver Interconnect PCL6000 606 600 Composite PCL6000 PCL606 and PCL600 receivers used in a main standby configuration can be interconnected to perform automatic switchover if detectable failure occurs in the on line receivers As shown in Figure 2 11 the antenna is routed to each receiver through a power divider such as the Moseley model PD 1000 The use of a power divider is recommended so that the impedance as seen by each receiver is approximately 50 ohms 8 IS imd _ B m ra Figure 2 11 Main Standby Receiver Interco
18. z haa 073 x R10 CW R200 10K LEVEL E3 s E B 25 ou U gt 2 E D 5 E A cw 1002 15V lt T2 1 OF 3 FOR NOTES 8 E PAGE FLAGS THIS PAGE SEI 91A7444 Rev D Transmitter Audio Power Supply Schematic p 3 of 3 Moseley PCL 6000 Document No 602 13375 01 Rev B 7 6 Schematic and Assembly Drawings 20D3023 Rev D Transmitter Audio Power Supply Assembly Moseley PCL 6000 Document No 602 13375 01 Rev B 7 7 Moseley PCL6000 d 2 09 a 1dn03 Ov ZHN8 ZI oso 434 EI kl N 350
19. RIR IR RS S S lt S S IS S IS S IS IS D 0 D A A a 5 5 X pu gt a oo EMA 28r olli SAS a 3 AE o alo D 8 SIS S gt ale 8 g als ci 2 2 9 ES B g olala o 2 S o g S e e als 9 i 8 9 4 ole o o s oT D e DEA 5 gt ul 1 l l 2 g E q S gt b d x 5 8 x b S E N 8 z lt a 5 gt lt x lt moo 5 m S REFEREI 600 10228 01 Rev K Receiver RF Module Schematic p 4 of 4 Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 7 59 930 03454 01 J330 450 RX RF Receiver RF Module 6030 Assembly Moseley PCL 6000 Document No 602 13375 01 Rev B Schematic and Assembly Drawings 7 60 TIVISNI MEL M9 S LINO LINO 0Z09 19d D OZL MIS s80 009 70 vGH EGH ca 18 13 31 Z L I lt 2S2 OT ANZ sx 699 T degli Adel oz ZHN OL NOILV43G0 de ee0 do MOL EL 843 949 Sho DCH LISAL NI an 813 X03 GITWLSNI
20. OW S m g SS 00 989 M 4 9 5 o A gt NIS 8 t Y JU zai mom mre T en oa lo o amp di wo EE E 8 z za z o lt a x c c o Slaelala 10 ke IEEE s L E E EE q x fe e AI lt lt z a E E lt E E ce i 5 A 8 4 wn E I e E P 2 gz 7 o 2 o m s 8 je SS Rn 5 RI m gt o o R z EARN ale olo o z z 2 8 rlslelelsle A s RRR z eR o s S l lt lt S 8 2 5 1 o u a e e a a 8 m M 6 x 7 a gar c o A s l3ls E 55 iz iz n FEE 5 z o 5 9 z2 5 lei sla o Wb x ll gt N z oL Z d ECK 6 ol n x Tom Z x uot s m z tcx a Ella 2 5 a o zig o Ke io z 818 2 2 Les E 11 g 8 ok 5 d 5 6 SIS o ou S KO i 5 z d a A i 600 10228 01 Rev K Receiver RF Module Schematic p 3 of 4 Moseley PCL 6000 Document No 602 13375 01 Rev B 7 58 Schematic and Assembly Drawings i x E i a gt a m x o ul FL1 01 Mi FMX1 5Hz 1 7 RIP TR A 60 MH 3 RO CI ale e elelelels z z Sn nn S S S AIR
21. Blank Page Required to Preserve Pagination Moseley Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 4 1 4 Module Characteristics 4 1 Introduction This section provides theory of operation for the PCL6000 modules Please refer to the listed schematic and assembly drawings for the receiver configuration PCL6020 6030 6060 freguency band of operation 950 450 330 or 220 MHz or 1 7 GHz and Multichannel Option that applies to your system Due to the many different system configurations your particular drawing package has been supplied with the manual Figure numbers for referenced drawings can be found in the Table of Contents at the beginning of Section 7 Schematic and Assembly Drawings 4 2 Transmitter Theory of Operation 4 2 1 Transmitter Audio Power Supply 4 2 1 1 Power Supply AC The power supply consists of an AC power connector P1 transformer rectifier CR1 capacitive filters C4 C5 and fixed linear regulators VR1 VR2 VR3 VR4 The power supply has four output voltages 15 15 5 and 12 VDC The RFA supply is adjustable R6 and factory set to 12 5 VDC when the transmitter is radiating This voltage is reduced to 1 5 VDC if the AFC loses lock or if the transmitter is placed in STANDBY see section 4 2 1 3 The rectifier and regulator for the 12 5 VDC supply are mounted on the RFA heat sink Capacitive ripple filters C6 C7 C8 are mounted on the board and accessed through c
22. PNE gt JJ le q gd b N N N N AZ R s h f Bees amu ANOD 744 voam SUPPLY WER B M AUDIO PO Moseley PCL 6000 21B2891 Rev D 6020 Receiver Final Assembly Document No 602 13375 01 Rev B Moseley PCL6000 7 15 P 5 f f J m Ewa 0 1 INTON du dya ANOD 180 GoNid Ca cA l SUPPLY m o sl dt N ll J e A ud E gt 8 u by 2 H s sI z CH 2 S a i 1 m A n S y 1 SE 21B2892 Rev D 6030 Receiver Final Assembly Moseley PCL 6000 Document No 602 13375 01 Rev B 7 16 Schematic and Assembly Drawings Rea FRONT PANEL o lt 88 u 25 i g E Ax gt in ib E 2 e S Rank o s A j o EE i gt gt ma to x d x lt
23. apz1 4 d qd HW 04 IAATTAINY AL LSI ASI Z os Zu ES teg AGL RE ano A an LU isnrav 410453 ILON DH 1 001 EJ YAOLFTNTONAIT W ONYAISV 77777 AI ANIT UOS A adoz een SEES SOT 12 HNZ HNL in Ut unt L EA 1 YAXIN ONE 91B7375 Rev C IF Demod 6020 Schematic Document No 602 13375 01 Rev B Moseley PCL 6000 7 61 Moseley PCL6000 v Aude LIII 225 Z ZZ LU SE ll 30S LIINIS Qvd ONNOHI YIXIN Ol QT3IHS XVOD 3010s Sod 9 d QNO OL vm N3Q010S HOVL 20B2941 IF DEMOD 6020 Assembly G3TVISNI 1 LON A ya osu ssu g IR s 8 gzo gus 2 RevC Document No 602 13375 01 Rev B Moseley PCL 6000 gc6 l LO Yva ON z6 vi io vva
24. 5 12 Alignment Figure 5 6 Test Setup for MUX Channel Alignment 8 On the RF signal generator adjust the modulation freguency to 67 kHz and the FM deviation for 6 0 kHz Note the reading on the receiver meter It should be between 6 and 8 on the lower scale This reading will be used as a reference to align the transmitter MUX 2 deviation Connect the output of the adjustable attenuator to the RF input of the receiver 9 Position the transmitter OPERATE STANDBY switch to the OPERATE position Using the scope adjust the output of the audio oscillator for a voltage of 1 5 Vp p and a frequency of 110 kHz 26 kHz mono Connect the audio oscillator output to the MUX 1 input of the transmitter Adjust the MUX 1 Level Adjust R29 on the Audio Power Supply board for a reading of 5 on the lower scale of the receiver meter Using the transmitter METER FUNCTION switch select the MUX LVL position Adjust R159 on the TX Audio Power Supply board for a reading of 5 on the meter lower scale Connect the audio oscillator to the transmitter MUX 2 input and adjust the oscillator to a frequency of 185 kHz composite only Using the receiver meter as a reference on the Audio Power Supply board adjust MUX 2 Level Adjust R40 for the reading noted in paragraph 8 The meter reading on the transmitter front panel should be between 6 and 8 on the lower scale Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 5 13 Troubles
25. 7 99 Moseley PCL6000 NI AME Z0g 48 9 73437 901 ol NI AM g XOF E OZF AZI 0314193d5 3S MM3HLO SS3IND S310 NI Juv S401 Sd J LITTANV 207 eng EN KOLT AS N NOILVIATA ZE SE 0 d d444 0 NOILVIATA 2H0S 0g T d dALLA LOV aon ad d HW Jasi 4 T 790 T A HUL Em UU AU v1 ER 1N0 OLPS e A 20 zus 13S UM QNve3svg HS SKS 1 awvesve zd y Lol VSIvNI 13431 1VNS 149 ONVSJSVH d d age ASL WSId4lIdWV GNVEASVE YOLIGLA Na OE YALINGT A LATIANVA A 91B7387 Rev F FM Demod 6030 6060 Schematic Document No 602 13375 01 Rev B Moseley PCL 6000 7 100 Schematic and Assembly Drawings FLA WHT 8RN 20B2949 Rev G FM Demodulator 6030 6060 Assembly Moseley PCL 6000 Document No 602 13375 01 Rev B
26. A o r P3 2 VN oS ON o SE o 4 S a L velo R188 YGLYNL 2 DEN p i E O 2 E e AMT CLM YSIENL sd zr wi woa k D et 918 Sto ees i lil osx ux Bre a lt 8 amp E THI FLAGS 600 10710 01 Rev B Receiver Audio Power Supply Schematic p 1 of 4 Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 7 17 MUX C54 4 2 EJ H KE E 8 2 A 1 S gt lt WE Lut ANAS gt D 91 4 8 doozg OSZ HUOL 440028 Huegoe AE AIT 1 UCC Cm Ce o ore Su S1 E Di 5 RS est 2 e NOOL 2 ase 2 STATU s E n ELARI DE a 600 10710 01 Rev B Receiver Audio Power Supply Schematic p 2 of 4 Moseley PCL 6000 Document No 602 13375 01 Rev B 7 18 Schematic and Assembly Drawings BASEBAND MPOSITE E9 Moseley PCL 6000 COMP 2 110 Receiver Audio Power Supply Schematic p 3 of 4 p
27. Moseley PCL 6000 gc6 l LO Yva ON z6 vi io vva 6 HYO diva a 31995 LON Od S310N z ol l Schematic and Assembly Drawings 7 28 010 XXX F 3d8 Jl LM 1 1 ug 198079003 mola lt 91B7451 Rev E Double Converter LO3 6030 Schematic Document No 602 13375 01 Rev B Moseley PCL 6000 Moseley PCL6000 Moseley PCL 6000 pu 20B3039 Rev E Double Converter LO3 6030 Assembly Document No 602 13375 01 Rev B 7 29 Schematic and Assembly Drawings 7 30 LNO HISN 81 TWNOIS 4M A NI AW 8 02 8 1r ILAW NO MAK ONS via 8 A up NOT V bap NE ll YOGE WO7ZP747 2HM SE ore 9 4220 NOLLVIASQ 2405 oe
28. Transmitter Audio Power Supply Schematic 9187444 D 0895 Transmitter Audio Power Supply Assembly 2083028 D 0895 RF Amplifier Schematic 450MHz 91C7396 B 0895 RF Amplifier Assembly 450MHz 20B2058 D 0895 6020 Receiver Final Assembly 330 450 21B2891 4 D 0895 6030 Receiver Final Assembly 330 450 21828924 D 0895 Receiver Audio Power Supply Schematic 600 10710 01 B 08 95 Receiver RF Module 6030 Assembly 20B31073 B 0895 IF Demod 6020 Assembly NOTICE This section contains schematic and assembly drawings referred to in Sections 1 and 4 For information on individual drawings refer to Section 1 under System Description and or Section 4 under Module Description Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 7 33 gt 8 CE m Lu e i i A lt j i D T 5 U es 6m n n ee 21B2890 4 Rev D 6010 Transmitter Final Assembly 3
29. 92 Z Huoly Age NOILVY3dO d SSVdAS 874 404 OITIVISNI L 2 ZG8 V 00 NO NI 9 0d Q3TVISNI 07 y ONG NI ZHN OZ LNO HIONJHIS TWNOIS A ki if SH Lon JAT Wa apzi apatt 4 d a ZHW 04 USIAUIHWV AI LS INIT UOS ANIT UOS Z9 i zs T soo Ben Tana dl OW anvaasva SES EEN ONYBISV ATLITTANV YAXIN 91B7375 Rev C IF Demod 6020 Schematic Document No 602 13375 01 Rev B Moseley PCL 6000 7 27 Moseley PCL6000 v Aude LIII 225 Z ZZ LU SE ll 30S LIINIS Qvd ONNOHI YIXIN Ol QT3IHS XVOD 3010s Sod 9 d QNO OL vm N3Q010S HOVL 20B2941 Rev C IF DEMOD 6020 Assembly G3TVISNI 1 LON A ya osu ssu g IR s 8 gzo gus Document No 602 13375 01 Rev B
30. FI SEE PAGE 1 OF 4 FOR NOTES 600 10710 01 Rev B Receiver Audio Power Supply Schematic p 4 of 4 Moseley PCL 6000 Document No 602 13375 01 Rev B 7 122 Schematic and Assembly Drawings 20B3024 Rev C Receiver Audio Power Supply Assembly Moseley PCL 6000 Document No 602 13375 01 Rev B 7 123 Moseley PCL6000 03119345 3S V V 13S IHLO SSIINN S310 HO NI 38V S3 YIVA HOLSIS3M L VH3dO TINNVHIOILTAN MOLIIVAVI ee LL S NYHL lt OV 3431NI TANNVHOIL Tf 5 HAB ZL 950 434 yu0Z AGI lt H E lt gt E 8Zd vZd 8 Tid OL SIOVAAILNI AG lt az Es ENE ki ays Q Gau al H wee od 8Zd YZd 89d OldVdv Tid OL S39ydadL 6 n in n dl n E S IS 611 934 EH Uu al 84 19 99 199 1950 122
31. II 930 03595 01 Rev J Receiver RF Module 6060 Assembly Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 7 93 91D7274 2 Rev J Preamp 1st Mixer 6060 Schematic Moseley PCL 6000 Document No 602 13375 01 Rev B 7 94 Schematic and Assembly Drawings L Li m ps 20D2827 Rev P1 Preamp 1st Mixer 6060 Assembly Moseley PCL 6000 Document No 602 13375 01 Rev B 7 95 Moseley PCL6000 031419945 3S DER LINO SOYXYJOXOIN NI FAV S3nTY 0zZl OL xozi ais OL mwisni Mb L SWHO NI Au SINIY ir gd a vga ecu es ca ABVSS3O3N Al 1S3L NI 3f as 95 N Hu09Z EIS NOILVH3dO dSd SSVdA8 81 0 Q3TWISNI 149 454 VE HUOLY 4 ZTS aa r a a D E en D ray 0384 I AINO l GATIVLSNI O1 ONG I a Get 3437 07 ANZ I l ep i 8v2 o aP21 oner d H HW 02 H IHITANV 4I LSE A AOS L INIT UOS OSAS ea nS en nd 89 ANI Nx ANIT UOS KR lt Ae A08 Atsnray al isa isnrav 670 ZHN L 0L ONZ HSIHAL 1409 G E AGL A Gr A E LOW BCC 81 x An HLON3HIS TVNOIS 6vH 7 E lt 3 SC 00 geg Dua Sca AOS L zo 2 Sort 9 J x 820719 idoszT Jadoo CES
32. i H4 q I ox D ns JL La q pe lI ad 3 q S lt i eal tory d S a INR U z 3 gt A 2 i uj 2 LLL i y mir FPE km x NT DA m N CH 8 z ni ca o A ENE G N NF T m K q 3 e e D Di p 21B2892 1 Rev D 6030 Receiver Final Assembly Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 7 81 ES SOS RUN Ka Keen ka d 34 il jl TANYA ai L OW d i wen ah c J lt bat Ex B elles B4 F FPE L B4 i NI x ae o ul o C 72 a lt 5 FAY Im d a gt Bl 5 AS i y LL B F 2 e BE gt o z Fa i a n Q mri 455 SE a m g S O a gt Sm I NE 7 _ Al x D WW ze AS O amp e lt W
33. ozz tugp9l Hp Document No 602 13375 01 Rev B 600 10227 01 REV H Transmitter RF Module Schematic p 4 of 4 Moseley PCL 6000 Moseley PCL6000 7 11 SH oo on oo on ee oF e aa 4 cioe 930 03462 01 Rev H Transmitter RF Module Assembly Moseley PCL 6000 Document No 602 13375 01 Rev B 7 12 Schematic and Assembly Drawings 9147456 Rev B RF Amplifier 220 MHz Schematic Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 7 13 Yon RER SS mmm EIN LL LG NS 20B3037 Rev B RF Amplifier 220 MHz Assembly Moseley PCL 6000 Document No 602 13375 01 Rev B 7 14 Schematic and Assembly Drawings yel es len es Faaa
34. Adjusts the MUX LVL function of the meter A reading of 5 on the lower scale equals 5 kHz of the main carrier by the subcarrier Used to adjust the RF LEVEL function A reading of 3 K onthe center scale of the meter equals 3000 uV of input signal Power supply metering adjustments Adjusts the meter ballistics Adjusts meter zero The Mute and Transfer section requires no adjustment If a failure is suspected in the Mute and Transfer circuitry the following information may be useful in isolating the problem 1 A mute signal from the IF Demod Mute Threshold Adjust LED red will de energize the mute relay and disconnect the composite and MUX audio outputs 2 This module may be externally muted either by a remote mute input or a transfer input from a receiver transfer panel TPR 5 4 6 Receiver RF Module PRESELECTOR FILTER 950 MHZ PCL6020 6030 Filters FL 12 and FL 11 in the RF module are two and three pole helical filters with a passband of approximately 20 MHz Under normal circumstances no alignment is required To check alignment a sweep oscillator whose frequency is centered in the middle of the RF band used is injected into RF IN and the signal is monitored at IF OUT The five adjustments should be set for a flat passband greater than 5 MHz wide PRESELECTOR FILTER 950 MHZ PCL6060 The filter is located under the Audio Power Supply board of the receiver see system assembly drawing The filter has a passband o
35. FA R30 FB R78 FC R82 MONO LF TILT R88 FILTER GAIN R89 MONO PGM LVL R98 MONO PGM MTRG R90 MUX LVL R12 Moseley PCL 6000 Jumper selects the de emphasis network to be enabled SELECT E2 IN or disabled OUT Adjustment for lower break frequency of de emphasis factory set Adjustment for upper break freguency of de emphasis factory set Jumper select for monaural low pass filter Monaural 15 kHz low pass filter adjustments factory set Monaural 15 kHz low pass filter adjustments factory set Monaural 15 kHz low pass filter adjustments factory set Compensates for low freguency roll off of mono filter factory set Sets unity gain of mono filter Sets output program level of the receiver Sets the meter program level for mono operation MUX level adjustment Adjusts the MUX level output of the audio processor Normally adjusted so that 5 kHz 4 kHz mono deviation equals 1 5 Vp p at 110 kHz Document No 602 13375 01 Rev B Moseley PCL6000 5 41 METERING AND STATUS PGM LVL R171 AFC LVL R166 LO1 R169 LO2 R168 LO3 R167 MUX LVL R170 SIG LVL R172 5V R213 15V R210 15V R212 METER BALLISTICS R196 METER ZERO R186 MUTE AND TRANSFER Adjusts the PGM LEVEL meter function 100 0 dB AFC level metering adjust Center arc 1st LO relative level Center arc 2nd LO synthesizer relative level Center arc 3rd LO relative level PCL6030 Center arc
36. Modulation adjustment 3 set active by EPROM or CHNL ZERO programming Modulation output to transmitter RF Module 3 5 Vp p nominal When set to ON provides internal front panel lockout of the channel select function BCD 8 s bit to set channel number when INT RMT ENABLE is ON 1 8 BCD 4 s bit to set channel number when INT RMT ENABLE is ON 1 4 BCD 2 s bit to set channel number when INT RMT ENABLE is ON 1 2 BCD 1 s bit to set channel number when INT RMT ENABLE is ON 1 1 CHANNEL ZERO PROGRAMMING FIX S2 1 F2 S2 2 F1 S2 3 MOD1 S2 4 MOD2 S2 5 MOD3 S2 6 NA S2 7 64 MHz S2 8 4 MHz S3 250 kHz S4 25 kHz S5 Moseley PCL 6000 Sets FIX capacitor in RF Module active 1 ON Sets F2 capacitor in RF Module active 12ON Sets F1capacitor in RF Module active 12ON Sets modulation adjust MOD1 active 1 ON Sets modulation adjust MOD2 active 1 ON Sets modulation adjust MOD3 active 1 ON not used Sets 64 MHz bit on for frequency selection 12ON Sets 4 MHz step HEX switch functions as follows 020 MHz 1 4MHz 2 8 MHZ E 56 MHz F 60 MHz Sets 250 kHz step HEX switch functions as follows 020 kHz 12250 kHz 2 500 kHZ E 3 5 MHz F 3 75 MHz Sets 25 kHz step HEX switch functions as follows 0 0 kHz 1225 kHz 2 50 kHZ E 350 kHz F 375 kHz Document No 602 13375 01 Rev B 5 46 Alignment 9 5 Test Fixture Diagrams The test fixtures shown in Figures 5 15 and 5 16 have been de
37. Moseley PCL6000 7 101 91B7502 Rev 1 Adjacent Channel Filter 6060 Schematic Moseley PCL 6000 Document No 602 13375 01 Rev B 7 102 Schematic and Assembly Drawings NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN ZU SN NI N d S N IN N N N N N N ye N N IN N N N N N lt N N S NN Se oe S N N wW N XXX MAM 20B3089 Rev 1 Adjacent Channel Filter Assembly Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 7 103 7 4 PCL 6000 1 7 GHz Standard System DESCRIPTION REV LEVEL Transmitter Audio Power Supply Schematic 9147444 B Transmitter Audio Power Supply Assembly 20D3023 D RF Amplifier 1 7 GHz 6w Schematic 930 12053 02 B RF Amplifier 1 7 GHz 6w Assembly 930 12052 02 B Receiver Audio Power Supply Schematic 600 10710 01 B Receiver RF Module 6030 Assembly NOTICE This section contains schematic and assembly drawings referred to in Sections 1 and 4 For information on individual drawings refer to Section 1 under System Description and or Section 4 under Module Description Moseley PCL 6000 Document No 602 13375 01 Rev B Schematic and Assembly Drawings 7 104 21B2926 Rev C 6010 Transmitter Final Assembly 950 MHz Document No 602 13375 01 Rev B Moseley PCL 6000 Moseley PCL6000 7 105 14 p 2
38. System Characteristics 1 18 LON OQ 9 WAL 7 1 WNOIS 44 A dS 3H1O SSFINN S3LON MOL d TINNYI 3434 24X05 04 707 LUBP NX ra Yad LINN ZX qas UE POLE 1YN431X3 23 74 3SION 39VMI Document No 602 13375 01 Rev B Moseley PCL 6000 Moseley PCL6000 1 19 Figure 1 4a PCL6060 Receiver Block and Level 92A1331 R A Sheet 1 of 2 i Gelli SOf i d eg A Z 2 2 ill P a i i i i i ex PU i i T ae T i i ed i i i i TE i ri i i Figure 1 4b PCL6060 Receiver Block and Level 9241331 R A Sheet 2 of 2 Moseley PCL 6000 Document No 602 13375 01 Rev B 1 20 System Characteristics Blank Page Required to Preserve Pagination Moseley Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 2 1 2 Installation 2 1 Unpacking The PCL6000 transmitter and receiver should be carefully unpacked and inspected for shipping damage Should inspection reveal any shipping damage visible or hidden immediately file a claim with the carrier Keep all packing materials at least until the performance of the system is confirmed If possible save all packing materials in case the
39. dB Decibel dBc Decibel Relative to Carrier dBm Decibel Relative to 1 mW DP Decimal Point DVM Digital Voltmeter EMI Electromagnetic Interference EPROM Erasable Programmable Read Only Memory ESD Electrostatic Discharge Electrostatic Damage FCC Federal Communications Commission FET Field Effect Transistor FM Freguency Modulation FMO Freguency Modulation Oscillator FSK Freguency Shift Keying GHz Gigahertz HF High Freguency HPF High Pass Filter IC Integrated Circuit IEC International Electrotechnical Commission IF Intermediate Freguency IMD Intermodulation Distortion UO Input Output IPA Intermediate Power Amplifier kHz Kilohertz LED Light Emitting Diode LF Low Freguency Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 LO LPF MHz MAI Mono ms mW Local Oscillator Low Pass Filter Megahertz Moseley Associates Inc Monaural Millisecond Milliwatt Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 1 1 1 System Characteristics 1 1 Introduction The PCL6000 Studio to Transmitter Link STL is designed to convey FM program material from a studio site to a transmitter site The PCL6000 also simultaneously conveys control and secondary programming subcarriers This eguipment may also be used to provide high guality program transmission in intercity relay service The PCL6000 series is a family of eguipment that can operate in several bands from 150 MHz through 1 7 GHz This opera
40. o ala od a E N M z vi a s a o na SH ek Vie 0 D Es o o i co N S m z es a m iv 8 u all S o o m z 2 1 9 v els r ole mo a OR A S 96 o r io o lt a SIS o o o Eg u3 mei daf 1 S E O a w lplNlolc alo o D x IRIS s Bg lt R S PE oS N D z lt 5 5 Si Ge BH 0 cys og z lt E fl B EIS ij S a es I ne ui E z z a Bee 1 lt E Zn YR E E a E ES a 5 5 m S Y gt 2 NI EO HY wu 2 N 2 ee o Wd ni 8 E A9 z 600 10227 01 REV H Transmitter RF Module Schematic p 3 of 4 Moseley PCL 6000 Document No 602 13375 01 Rev B Schematic and Assembly Drawings 7 10 3 HAGI Let AJON3nO3M4J X3 O3TIVISNI 34V S43L14 ANY ST gne SCC 8 el HIGI E HINGI DEM HINGI ZZZ gzel HINGI IN ECAS BiZ HnGL IN XNds taan 8 aag xvoo IN wHosaz a LXII a dA8 XVOO IN AHON3Z Lek ado ZL IN LayHo SINOD 33 IN LELT ZU LAH v Inge PANE 184 LELT n LELT BIVONVIS T 1 EIER MOUNT AMC 91 4 YILYJANO LNO N3XIN Lu JuHP 1 7X SOU TWNH3DXG x
41. q t H y q E a e D Ss 2 A A A TT ES 3 B x o N A ges 2 lt S f N gt E n J NN a o a NN o i gt NN a E B N 7 amp 8 eM Y a c fad e Lu E o a 5 lt Ami 21B2927 Rev C 6030 Receiver Final Assembly Moseley PCL 6000 Document No 602 13375 01 Rev B 7 118 Schematic and Assembly Drawings Rea FRONT PANEL o lt 88 u 25 i g E Ax gt in ib E 2 e S Rank o s A j o EE i gt gt ma to x d x lt A o r P3 2 VN oS ON o SE o 4 S a L velo R188 YGLYNL 2 DEN p i E O 2 E e AMT CLM YSIENL sd zr wi woa k D et 918 Sto ees i lil osx ux Bre a lt 8 amp E THI FLAGS 600 10710 01 Rev B Receiver Audio Power Supply Schematic p 1 of 4 Moseley PCL 6000 Document No 602 13375 01
42. 19 vd SIRI SV 39Vd SIRI SHOIVN9IS3 39N3H3138 Document No 602 13375 01 Rev B 600 10228 01 Rev K Receiver RF Module Schematic p 1 of 4 Moseley PCL 6000 7 124 Schematic and Assembly Drawings gt SE LI kt 37M 9 4 S NW K A n 2 NT S Mt VN 9c c 4 SX gS X RP gt x sx 600 10228 01 Rev K Receiver RF Module Schematic p 2 of 4 Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 7 125 LIER L JE O VERY DI RE dBm 0 s 3 3 3 3 3 alele e ale S 8 ka ND eo xd zy Es a8 lt N m uo 4 S weve y ale D z xm de ala a 2 amp E a lt WIN 5 5 S OW S m g SS 00 989 M 4 9 5 o A gt NIS 8 t Y JU zai mom mre T en oa lo o amp di wo EE E 8 z za z o lt a x c c o Slaelala 10 ke IEEE s L E E EE q x fe e AI lt lt z a E E lt E E ce i 5 A 8 4 wn E I e E P 2 gz 7 o 2 o m s 8 je SS Rn 5 RI m gt o o R z EARN ale olo o z z 2 8 rlslelelsle A s RRR z eR o s S l lt lt S 8 2 5 1 o u a e e a a 8
43. 6 HYO diva a 31995 LON Od S310N z ol l Schematic and Assembly Drawings 7 62 010 XXX F 3d8 Jl LM 1 1 ug 198079003 mola lt 91B7451 Rev E Double Converter LO3 6030 Schematic Document No 602 13375 01 Rev B Moseley PCL 6000 Moseley PCL6000 Moseley PCL 6000 pu 20B3039 Rev E Double Converter LO3 6030 Assembly Document No 602 13375 01 Rev B 7 63 Schematic and Assembly Drawings 7 64 Sl Od 1S3L S od EE aHa NAHL V SINIOd n A xe L OE NI Am 02F 492 wn E i NI NUE 2087 Aen AWNOIS 1 5 K i AS 4t UN Un A v NI AW g 20ZF AZI SEAN E dH A N e Lack TvNSIS 73437 901 eu a gle
44. 6000 Document No 602 13375 01 Rev B Moseley PCL6000 1 9 Mixer PCL6020 6030 The Mixer is located in the RF module when configured as a PCL6020 or PCL6030 The carrier freguency is mixed with the 1st Local Oscillator LO1 signal to provide down conversion to the first intermediate freguency IF of 70 MHz nominal The IF signal is buffered to overcome mixer conversion loss 1st Local Oscillator 950 MHz The receiver ist LO is identical to the transmitter 1st LO referenced in section 1 4 1 1st Local Oscillator 330 450 MHz The receiver 1st LO is identical to the transmitter 1st LO referenced in section 1 4 1 1st Local Oscillator 220 MHz The receiver 1st LO is identical to the transmitter 1st LO referenced in section 1 4 1 1st Local Oscillator 1 7 GHz The 1st Local Oscillator LO1 section of the RF module consists of an oven controlled crystal oscillator a doubler and a step recovery diode SRD multiplier The oscillator operates at 102 MHz nominal The resultant multiplication factor of the LO is X16 The output 1632 MHz is externally filtered and then attenuated before being applied to the upconverter mixer A level detector provides front panel metering information The output power is approximately 10 dBm 2nd Local Oscillator The 2nd Local Oscillator LO2 is located in the RF module and is identical to the transmitter FMO except for operating frequency and modulation capability LO2 consists of a 70 90 MHz u
45. 7 1 PCL 6000 220 STD 602 10300 71 Rev A Se LEVEL DATE Transmitter Audio Power Supply Schematic 91B7444 D 08 95 Transmitter Audio Power Supply Assembly 2083023 D 0895 RF AmplifierSchematic Lang B 0895 RF Amplifier Assembly 20B3037 B 08 95 6020 Receiver Final Assembly 21B2891 3 D 08 95 6030 Receiver Final Assembly 21B28923 D 08 95 Receiver Audio Power Supply Schematic 600 10710 01 B 08 95 IF Demod 6020 Schematic Double Converter 6030 Schematic NOTICE This section contains schematic and assembly drawings referred to in Sections 1 and 4 For information on individual drawings refer to Section 1 under System Description and or Section 4 under Module Description Moseley PCL 6000 Document No 602 13375 01 Rev B 7 2 Schematic and Assembly Drawings q M i D A m bs 3 7 Ca Wi A 1HNYd eliz diu 2 a H up CH qc t d SEN to D SN nei NE x il l i 2j 3 I cl d x J o um i a lt w gt lt 1 h XU UH I isi O lt H L
46. 950 MHz The RF Amplifier module is a three stage power amplifier designed to produce 6 watts nominal output power over the 890 960 MHz band when driven with a 16 dBm nominal input signal The heart of the module is a high gain UHF power amplifier hybrid device AR1 that exhibits excellent stability and ruggedness AR1 provides 22 dB of gain that is factory set in the transmitter for 6 watts by adjustment of R1 Field adjustment of R1 is not recommended since other design considerations will be compromised i e DC power consumption temperature stability efficiency etc CAUTION Moseley PCL 6000 Document No 602 13375 01 Rev B 4 8 Module Characteristics Power must be limited to 19 dBm 80 MW or permanent damage to the module may result The PA current sample is derived across R2 plus any additional line losses to provide 0 18 volt amp sensitivity at the RFA input terminals C701 and C702 This sample is fed to the Audio Power Supply board and a test point is provided for monitoring The seven section low pass filter following AR1 is realized in a semi lumped configuration utilizing microstripline inductors open circuited stubs and lumped capacitors C8 and C9 The filter attenuates the harmonics of the final stage to better than 60 dBc per FCC requirements The dual directional coupler is fabricated using stripline technology to provide high directivity therefore assuring accurate forward and reflected power sampl
47. A Sheet 1 of 2 Moseley PCL 6000 Document No 602 13375 01 Rev B BLS 3NON 31v9S e Z 9 Z 13HS Kg SALON 404 Z 40 39Vd 33S A Od N XD VAD NE 00074 LM 6 vO v13109 Kapsow SQ NYNILSYO LIL 10 67101 109 f W3LI T3A3 Z XnN A31 xnA AAA KON SWHA 921 SAPE ANN VVV T3A31 Nod ONOW 201 RER Y vad OL JONINOO ilviOval I 7ZP4 op SQA 8 vZ Z 1ridNI 30 NJAO IV LX ANAL WOOM V09 dMMHVAS VUOSE AZ TIS VUA A AINO NOILdO 29 SWd 1338 FOR 099 davdNyIS Ov NYS 1N3HHnO Vd SILVI 08 IV IVA WILN 29434210 Q OL x 3 ASSY ddnS N3MOd OlOnv A INVd INO44 gt E J ASSY v Ol s A Sheet 2 of 2 Figure 1 1b PCL6010 Transmitter Block and Level 92A1319 R Document No 602 13375 01 Rev B Moseley PCL 6000 1 14 System Characteristics d T z EN 10dBm dB D bnd Figure 1 2a PCL6020 Receiver Block and Level 92A1320 R A Sheet 1 of 2 Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 1 15 lil 30 WATTS Figure 1 2b PCL6020 Receiver Block and Level 9241320 R A Sheet 2 of 2 Moseley PCL 6000 Document No 602 13375 0
48. Adjust the meter ballistics The meter is normally adjusted for a 0 25 dB overshoot by switching between the REFL POWER meter function and the PGM LEVEL meter function with a 0 dB input program input 3 5 Vp p or 1 25 Vams Used to electrically zero the meter Used to adjust the 12 5 VDC 22 VDC for 1 7 GHz power supply output voltage when the transmitter is in the OPERATE position Document No 602 13375 01 Rev B Moseley PCL6000 5 37 CONTROL TPT THRESHOLD R138 Sets the point at which the standby transmitter will switch in conjunction with the Moseley TPT 2 transfer panel 5 4 2 Transmitter RF Module FMO SYNTHESIZER REF FREQ ADJ OSC1 LOSS OF LOCK CR1 AFC LVL FL1 VARICAP BIAS R37 VARICAP BIAS TP4 MOD ADJ R33 F1 AFC ADJ C34 F1 ON S4 2 F1 LED CR6 F2 AFC ADJ C30 F2 ON S4 3 F2 LED CR5 FIX ON S4 4 FMO LVL TP2 Frequency Trim Adjustment Used to tune the reference oscillator This LED gives a red indication when the AFC loses lock AFC level test point Monitors the DC level of the AFC loop It is normally set to 7 VDC Varicap bias adjustment Used to adjust the FMO for minimum distortion Varicap bias level test point A DC level 5 5 VDC to set a nominal minimum distortion point Modulation adjustment Used to set the FMO deviation It is normally set to 40 kHz with 2 8 Vp p input F1 AFC Level Adjustment Adjusted for a nominal 5 9 VDC
49. Converter LO3 module PCL6030 6060 for a peak reading on the RF LVL meter position These adjustments are found through access holes at the top of the module 5 3 9 4 System Check 1 Using MOD ADJ R33 in the transmitter RF module set deviation to 50 kHz 40 kHz mono Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 5 29 2 Using a 15 kHz tone verify distortion is within specification If adjustment is needed use 10 7 MHz IF adjustments Moseley PCL 6000 Document No 602 13375 01 Rev B 5 30 Alignment Synthesizer Freguency Calculation Example Step 1 If larger than 64 MHz put S4 1 in 1 position and go to step 3 Step 2 Subtract 64 MHz from synthesizer freguency 95 600 MHz example freguency f 95 600 64 000 31 600 MHz result A Step 3 See Table 5 2 below S1 column Find largest entry which is less than or egual to result A 28 0 lt 31 6 therefore S1 7 Step 4 Subtract S1 freguency from result A 31 00 MHz 28 00 3 600 MHz result B Step 5 See Table 5 2 below S2 column Find largest entry which is less than or egual to result B 3 50 lt 3 60 therefore S2 E Step 6 Subtract S2 frequency from result B 3 600 MHz 3 500 100 MHz result C Step 7 See Table 5 2 below S3 column Find largest entry which is less than or egual to result C 100 lt 100 therefore 53 4 Step 8 An
50. EE xz dis ols no 1 ASI A D I ER 20ZZ eea t A cay RA _ AN ALAN AGI CH MOTZ A x rl DE Biere NO GH WO z 3201 E y MAK ONS A up NOT V bap NE ll 4 06 NOILVIAJA ZHY SE 4027 NOLLVIASQ 2405 oer d dAL 1 La 13S T3431 ONYAISVA d d 1220 ASL 73A31 TWNOIS qNv83sva d d age av ATOHSJAHL ILAN ozz d d 491 06FNZ LION GZ isneg 0 AGL U LATIANV GNVEASVE A9 OL Ab 79437 41d aonad UMIATIGN V 207 90727 777 Wa XD Ba 02 0 veo gra UALIWIT NI wagp oi 02F d d 4 sou HAALAITANV TAA 91B7387 Rev F FM Demod 6030 Schematic Document No 602 13375 01 Rev B Moseley PCL 6000 Moseley PCL6000 7 65 D 20B2949 Rev G FM Demod 6030 Assembly Moseley PCL 6000 Document No 602 13375 01 Rev B 7 66 Schematic and Assembly Drawings 7 3 PCL 6000 950 MHz STD DESCRIPTION REV LEVEL G H H C T 6060 Receiver Final Assembly 21B2915 Receiver Audio Power Sup
51. F lt 19 e S14 alo amp s d AT Wd In v ANN L uu XIN ANZ YALATTANY saA el ow GNV8ISV8 eee Document No 602 13375 01 Rev B 91B7375 Rev C IF Demod 6020 Schematic Moseley PCL 6000 v JUVAL LIII v Schematic and Assembly Drawings 7 96 2 Z EE SE 27 Qvd ONNOYD HIXIN OL 13IHS XVOD 430105 Sod 9 QNO OL N3XIW 301OS XYL D 20B2941 Rev C IF Demod 6020 Assembly Document No 602 13375 01 Rev B Moseley PCL 6000 Moseley PCL6000 7 97 al x lelole 8 lalele gt JA MERE KL Fo Oo E amp lt e lt lt lt a eles 1 rioja olo E o Jelo 5 o ojn Ius EE DE E ES slk alo dE lt mlolaju
52. MW The first stage Q1 is operated class A and its input matched by C5 C8 and L1 This stage provides 9 dB of gain The output of the first stage is tuned and matched to the input of the second stage by L2 C8 and C11 The second stage is operated class C and provides 7 dB of gain The output of the second stage is tuned and matched to the input of the final stage by L4 C13 and C16 The final stage is operated class C and provides 6 dB of gain L5 L6 C18 and C17 match the final output impedance into the 5 element low pass filter C19 L7 C20 L8 C21 The filter attenuates harmonics of the final stage to better than 60 dBc per FCC reguirements The output impedance of the filter is 50 ohms The dual directional coupler is composed of two coupled line microstrip sections The forward and reflected power levels are rectified by diodes CR1 and CR2 respectively These levels are filtered with RC low pass networks to reduce EMI in the meter sample output lines The final current sample 0 18 VDC Amp is provided by R5 and is metered nominal 2 2 amp The RFA supply bridge diode CR101 and regulator Q101 are mounted to the heat sink of the RFA 4 2 3 4 RF Amplifier 220 MHz The RF Amplifier is a two stage discrete bipolar amplifier utilizing lumped elements for impedance matching and tuning The amplifier provides 20 dB of gain to an output level of 10 watts The input applied at J1 is nominally 20 dBm 100 MW The first stage Q1
53. Moseley PCL 6000 7 110 Schematic and Assembly Drawings HIS PAGE FLAGS 78 R80 R57 600 10227 01 REV H Transmitter RF Module Schematic p 2 of 4 Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 7 111 a M pz Ge 081 L 25 E A V xe t5 2 0 8 uc E Ke m JpF 8 y a lt a TOR 6 ENCE DESIGN a o s 5 5 S8 nsls Silb E zi EE di _ a I min m D o z z i o o EA ols J 9 Y E N olo B S i S e amp o i a o oj 2 E N M z vi S z z a o na SH ek Vie 0 D Es o o i co SIN GIS GIS 2 Ce o m iv 8 u all i E o o o 1 z go v els r olo mo a OR SS 5 z Qr gt a SIS o o o Ea Gr laz S oa a lplNlolc o t o 4 x NSS B S 3 ag AEN SE Zs uwe 2 lt E N ni 5 SE 5 Si Ge d o 2 og z lt lt oe z EIS ij S E e I DS ul x E E Zn
54. Rev B Moseley PCL6000 7 119 MUX C54 4 2 EJ H KE E 8 2 A 1 S gt lt WE Lut ANAS gt D 91 4 8 doozg OSZ HUOL 440028 Huegoe AE AIT 1 UCC Cm Ce o ore Su S1 E Di 5 RS est 2 e NOOL 2 ase 2 STATU s E n ELARI DE a 600 10710 01 Rev B Receiver Audio Power Supply Schematic p 2 of 4 Moseley PCL 6000 Document No 602 13375 01 Rev B 7 120 Schematic and Assembly Drawings ac ge 2 Be 5 lt 5 48 Sr g BR a 100 p 2 19 KI BASEBAND MPOSIT on O pil T2 PGM Lv Mem mms s gr H MUX OUT MONG FOR NOTES 0 0 0 0 0 Gi o ox 2 ox J 5 a 4m e J el 2 E a 600 10710 01 Rev B Receiver Audio Power Supply Schematic p 3 of 4 Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 7 121 MI Te p 3 MONO PG MONO BASEBAND TER INPUT
55. S S S IRIS A ININININIS 9 wglglglelglelglg Rik B B S D NININ NIN IN AJAA Fa 3 3B 102 000 o o o ilo 3 9 E E 9 olele 2 o R 9 a 5 D m 1 d 1 1 zlole oo o o EES od a o colo 0 oi z a lt 3j A iem S lt lt i 5 A Ot gs E OZ n S 3 600 10228 01 Rev K Receiver RF Module Schematic p 4 of 4 EL Document No 602 13375 01 T4 Rev B Moseley PCL6000 7 91 e Il TTL IT B 930 03740 01 Rev J Receiver RF Module 6020 6030 Assembly Moseley PCL 6000 Document No 602 13375 01 Rev B 7 92 Schematic and Assembly Drawings Dn Au EIE T
56. VCO buffer reference oscillator and low pass filter The digital group includes a dual modulus prescaler and an integrated PLL IC that provides multiple functions to be described later These three groups provide an RF signal source that has good short term stability low noise and is tunable over a wide freguency range Selecting the appropriate divide ratio synthesizes the crystal controlled reference oscillator and ensures long term stability The VCO consists of low noise field effect transistor Q4 in an RF grounded base configuration The drain of Q4 is connected to the resonant circuit inductor and capacitors The capacitance for this circuit is provided by C35 C40 and C41 as well as the three switching networks that control the capacitors C26 C30 and C34 The inductance consists of a stripline inductor on the PC board Feedback to cause oscillation is from the drain to the source consisting of C40 and C41 The normal frequency range of the oscillator is 70 7 to 90 7 MHz The signal is buffered by U4 which drives the seven section elliptical low pass filter comprised of C55 L6 C56 C57 L7 C58 C59 L8 C60 and C61 This sharp cut off filter attenuates the harmonics of the 2nd LO The output is buffered by the resistive attenuator R78 R79 R80 to provide a level at the mixer of 6 dBm R48 is used to sample the VCO output as feedback for the high speed dual modulus prescaler U2 The prescaler divides the 80 7 MHz signal by 1
57. and PCL6060 receivers The signal input to mixer U1 is mixed with the 2nd LO signal to produce the 2nd IF signal at 10 7 MHz The 2nd LO signal is provided by the synthesizer in the RF module The mixer is double balanced and its IF port 10 7 MHz is diplexed L1 C1 C2 R1 and fed through a filter L2 C3 L3 to amplifier Q1 The output of the 1st 10 7 MHz amplifier Q1 is buffered by emitter follower Q2 The source impedance required by filter FL1 is set by R9 The 1st 10 7 MHz IF filters FL1 FL2 and FL3 are linear phase monolithic ceramic filters that are jumper programmed for particular receiver configurations MONO WIDEBAND COMPOSITE or NARROWBAND COMPOSITE C13 C14 and C15 allow a null adjustment of the filter distortion Amplifier U2 compensates for filter losses and buffers the impedance match between the 1st and 2nd IF filters In a similar fashion the 2nd 10 7 MHz IF filters FL4 and FL5 are jumper programmed for receiver configurations MONO or COMPOSITE C21 and C22 allow a null adjustment of the filter distortion Amplifier U3 compensates for filter losses and buffers the impedance matching L11 and C28 form a harmonic and noise filter for the 3rd mixer U4 The input to the 3rd mixer is mixed with the 13 7 MHz 3rd LO signal to produce the 3rd IF signal at 3 MHz The 3rd LO is comprised of crystal oscillator Q4 and buffer Q5 The 3rd mixer is also double balanced and diplexed The output signal is sent to the FM Demodul
58. and a step recovery diode SRD multiplier The oscillator operates at 92 MHz nominal The resultant multiplication factor of the LO is X10 The output 920 MHz is filtered and attenuated before being applied to the upconverter mixer A level detector provides front panel metering information The output power is approximately 10 dBm Up Converter To preserve the low noise and low distortion characteristics of the FMO the RF signal is up converted to the reguired carrier freguency through the use of a double balanced mixer and the 1st Local Oscillator LO1 The appropriate mix product is selected with a bandpass filter The Intermediate Power Amplifier IPA amplifies the signal to a level high enough to drive the RF power amplifier RFA or the Doubler Assembly in the 1 7 GHz system The Upconverter IPA is located in the RF module RF Amplifier 950 MHz The RF Amplifier module internally consists of a three stage hybrid amplifier which amplifies the input signal 40 mW typical to the nominal 6 watt transmitter output The output is filtered to attenuate all higher order harmonics to a level of at least 60 dBc The output is sampled via a dual directional coupler with detectors that provide an indication of the forward and reflected power of the RF amplifier The final stage current is sampled and metered in this module RF Amplifier 450 MHz The RF Amplifier module internally consists of a three stage hybrid amplifier which ampli
59. both tune AFC C26 fixed cap is enabled by switch S4 4 Enable this switch when operating at 950 MHz or higher 5a 950 MHz band If the new frequency is within the 940 960 MHz range there is no need to adjust the IPA and RFA filters If the new frequency is outside of this range peak the internal pc board mounted filters FL 12 and FL 11 for maximum IPA LVL meter reading Peak the external filter FL2 mounted underneath the Audio Power Supply board for maximum FWD PWR meter reading 5b 220 450 MHz band Peak the external helical filter FL4 for maximum IPA LVL meter reading Peak the external filter FL2 for maximum FWD PWR meter reading Check the transmitter assembly drawing to verify the proper filter before tuning 5C 1 7 GHz band The TX RF module operates at one half the carrier freguency i e 850 MHz for 1 7 GHz carrier Peak the internal pc board mounted filters FL 12 and FL 11 for maximum IPA LVL meter reading Peak the external filter FL2 mounted in front of the RFA and part of the doubler assembly for maximum FWD PWR meter reading 6 Connect the transmitter dummy load output to the frequency counter Allow 5 minutes for the crystal oven to stabilize Adjust 1st LO XTAL tuning capacitor C84 in the RF module to set the new output carrier freguency Note Long term crystal aging will usually result in an overall shift in LO freguency Typically this shift will be less than 5 ppm 5 kHz at 950 MHz over the life of the
60. depending on the channel assignment Check the test data sheet Switches on the F1 AFC adjustment capacitor active Indicates the F1 AFC adjustment capacitor is active F2 AFC Level Adjustment Adjusted for a nominal 5 9 VDC depending on the channel assignment Check the test data sheet Switches on the F2 AFC adjustment capacitor active Indicates the F2 AFC adjustment capacitor is active Switches on the FIX AFC adjustment capacitor active FMO level test point A DC level 40 9 VDO that represents the detected relative output of the FMO oscillator FREQUENCY SELECTOR SWITCHES S4 1 S1 S2 S3 Programs the 64 MHz step size of the synthesizer Programs the 4 MHz step size of the synthesizer Programs the 250 kHz step size of the synthesizer Programs the 25 kHz step size of the synthesizer INTERMEDIATE POWER AMPLIFIER 950 MHZ The only adjustments to the IPA are the filters FL11 FL12 These can be adjusted by injecting a sweep signal at J3 with P2 in the test out position The filter response may be tuned by observing the output on a spectrum analyzer If a quick alignment is needed put the meter switch in IPA position and peak the reading by adjusting the filter screws P2 should be in the operate position for this Moseley PCL 6000 Document No 602 13375 01 Rev B 5 38 Alignment INTERMEDIATE POWER AMPLIFIER 220 450 MHZ The only adjustments to the IPA are the external filters FL4 FL2 These c
61. frequency of the 2nd LO is determined by the divider values programmed into the PLL chip U1 If the Multichannel option is being utilized in the system these settings come from the Channel Control board s parallel inputs at J11 and the internal switches S1 S2 S3 and S4 must be disabled S4 open circuit and S1 2 3 set to F If the RF module is being used as a stand alone the frequency is set by the values of switches S1 S2 S3 and S4 The output frequency is determined by adding the resultant frequency values set by each switch S4 1 is a one bit switch that sets 64 MHz S1 S2 and S3 are four bit switches set to a hex value 0 1 2 3 4 5 6 7 8 9 A B C D E F where A F corresponds to 10 15 The transmitter frequency example below illustrates the math Receiver 2nd LO frequency example Ist LO 1020 000 MHz Carrier Freq 950 000 Ist IF Freq 70 000 MHz lst IF Freq 70 000 MHz 2nd IF Freg 10 700 MHz 2nd LO Synth 80 700 MHz SWITCH SETTINGS S4 1 1 X 64 64 000 MHz S1 4 x 4 16 000 S2 2 x 25 500 ER 8 x 025 0 200 80 700 MHz Note See section 5 3 9 for changing the STL frequency in the field 4 3 2 2 1st Local Oscillator 950 MHz The receiver 1st LO is identical to the transmitter 1st LO circuit See section 4 2 2 2 TX RF Module for a detailed circuit description 4 3 2 3 1st Local Oscillator 220 MHz The receiver 1st LO is identical to the transmitter 1st LO circuit See section 4 2 2 3 TX RF
62. front panel standard is depicted in Figure 3 1 The meter functions and scales are described in Table 3 1 The top scale is calibrated in dB below is a 0 to 25 linear scale On the bottom is a center arc for relative indications The meter is an absolute value peak reading type with fast ballistics since the purpose of the meter is to observe the peak values of modulation which affect the deviation of the transmitter AFC LVL IPA LVL LOLVL PA CURRENT PCL 6010 Aural STL Transmitter AFC LOCK RADIATE OPERATE FWD PWR REFL PWR PGM LVL 15V MUX LVL MD1137 Figure 3 1 PCL6010 Transmitter Front Panel Standard The two transmitter status LEDs are red green bi color LEDs AFC LOCK is green when the FMO Synthesizer has achieved a lock condition When AFC LOCK is red it indicates that an unlock condition exists This inhibits any radiation of RF power resulting in RADIATE being red When power is initially applied to the transmitter it is normal for AFC LOCK to be red for several seconds RADIATE will be green when the transmitter is supplying RF power and red when not supplying RF power RADIATE is controlled by the internal interlock controls the RADIATE STANDBY switch and any external logic associated with main standby operation The OPERATE STANDBY switch functions as an on off switch for the RF power output In the OPERATE position the RF power will be on provid
63. generator and the receiver should be kept at a minimum to reduce insertion loss As an example a 3 foot cable RG 58 will cause a 1 dB or 10 loss in signal at 950 MHz 5 3 4 Transmitter Deviation and Receiver Output Level Calibration Description The deviation and modulation sensitivity of the composite information is aligned using a Bessel null function as a reference The MUX channel is aligned using an RF generator as a reference Procedure 1 Connect the equipment as shown in Figure 5 4 2 Adjust the audio oscillator of the distortion analyzer as follows a Position the meter function switch to the oscillator level position and adjust the oscillator level controls for an output voltage of 1 25 Vrms composite 1 00 Vnus mono Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 5 9 b Using the counter to monitor the oscillator freguency position the freguency controls for 20 79 kHz composite 16 62 kHz mono 3 Position the transmitter OPERATE STANDBY switch to the OPERATE position Using the METER FUNCTION switch select the FWD PWR position and verify that the meter reads between 3 dB and 2 dB on the top scale 4 Using the spectrum analyzer monitor the modulated RF output of the transmitter The controls of the spectrum analyzer should be in the following positions Freguency Band GHz 01 3 Time DIV Auto Trigger Free run FREQ SPAN DIV 50 kHz DIV with 3 kHz bandwidth Input ATTEN 30 REF
64. is line voltage programmable see Figure 2 1 Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 3 3 SS FCC ID CSU9WKPCL6010 Se MON MOSELEY ASSOCIATES INC lu ASSEMBLED IN USA E MUX 1 TX REMOTE amp 4 q d A 28 48 MUX 2 CHNL REMOTE Figure 3 2 PCL6010 Transmitter Rear Panel The PCL6010 transmitter rear panel DC power option is depicted in Figure 3 3 The DC input panel is marked in the factory for the DC input voltage the internal ground configuration NEG GND for positive DC input ISO GND for negative or positive DC input and fuse rating See Section 4 2 for further technical information concerning the internal DC configuration COMP MONO a FCC ID CSU9WKPCL6010 j d MOSELEY ASSOCIATES INC L ASSEMBLED IN USA J VON INPUT 12V FIGA 24V MUX 1 TX REMOTE e amp 380 MUX 2 CHNL REMOTE MD1135 Figure 3 3 PCL6010 Transmitter Rear Panel DC Option 3 2 3 Multichannel Transmitter Operation The Multichannel transmitter is preprogrammed for up to 16 channels of operation The freguencies are predetermined by the customer and are factory set at time of manufacture The PCL6010 transmitter front panel for the Multichannel option is depicted in Figure 3 4 The front panel display indicates the CHANNEL number that is currently active A label on the rear panel lists the particular channel assignment freguencies The front panel SELEC
65. is operated class C and its input matched by C1 C2 and L1 This stage provides 12 dB of gain The output of the first stage is tuned and matched to the input of the final stage by L3 C5 and C6 The final stage is operated class C and provides 8 dB of gain L6 L7 C11 and C10 match the final output impedance into the 6 element low pass filter L8 C12 L9 C13 L10 C14 The filter attenuates harmonics of the final stage to better than 60 dBc per FCC requirements The output impedance of the filter is 50 ohms The dual directional coupler is composed of two coupled line microstrip sections The forward and reflected power levels are rectified by diodes CR1 and CR2 respectively These levels are filtered with RC low pass networks to reduce EMI in the meter sample output lines The final current sample 0 18 VDC Amp is provided by R4 and is metered nominal 2 2 amp The RFA supply bridge diode CR101 and regulator Q101 are mounted to the heat sink of the RFA 4 2 3 5 RF Amplifier 1 7 GHz The RFA module is a four stage discrete amplifier utilizing microstrip matching elements for impedance matching and tuning The amplifier provides 38 dB of gain to an output level of 6 watts The input applied at J1 is nominally 0 dBm 1 MW The first three stages are common source class A FET amplifier stages utilizing a bipolar DC bias scheme requiring the 15 VDC supply The gain of each stage is set by the gate bias adjustment The final stage i
66. lt CARRIER FMO freguency CARRIER freg LO freg Note If the frequency is greater than 10 kHz away from the desired frequency remove the top cover and position frequency selector switches S4 1 S1 S2 S3 for the desired frequency 2 Adjust the 1st LO XTAL tuning capacitor C84 so that the counter reads the desired freguency Note If the FMO LOSS OF LOCK is red it will be necessary to first adjust the AFC level to accomplish this step See Step 4 below 3 Reconnect the FMO output to the RF input of the mixer 4 Adjust the controls on the RF signal generator for a frequency that is 70 MHz PCL6020 or 3 MHz PCL6030 6060 above the FMO frequency and for an output of 10 dBm Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 5 33 Using the RF spectrum analyzer position the switches on the adjustable attenuator for an output level of between 20 and 25 dBM at 70 MHz Reconnect the adjustable attenuator to the IF Demod 5 Adjust the oscillator output on the distortion measurement test set for a frequency of 1 kHz and a level of 1 25 VRMS 3 5 Vp p 6 Distortion and AFC Level Alignment AFC Adjustment F1 AFC ADJ C34 is enabled by switch S4 2 When enabled LED indicator CR6 visible through the side of the module will illuminate F2 AFC ADJ C30 is enabled by switch S4 3 When enabled LED indicator CR5 visible through the side of the module will illuminate Both adju
67. nominal 7 VDC AFC level For Multichannel operation different capacitors are switched in to maintain an AFC range between 5 9 VDC for different channel frequencies These switching networks are labeled F1 F2 and FIX A logic level of 5 VDC at the input of the buffers Q3 Q2 Q1 will connect that corresponding capacitor into the resonant circuit If the Multichannel option is being utilized in the Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 4 15 system these settings come from the Channel Control board s programmed inputs at J11 5 18 and 6 and switch S4 must be disabled open circuit If the RF module is being used as a stand alone switch S4 is used to switch in the required capacitors In either case green LED indicators CR6 F1 and CR5 F2 will light to indicate which setting is active The FIX capacitor is normally used to band switch to a frequency far removed from the initial setting The lock detect signal at U1 28 is a series of pulses at the step size rate 25 kHz when the loop is locked The low pass filter R19 and C13 provide an average voltage at U3 5 of 5 VDC when the loop is locked If the loop becomes unlocked the average voltage drops to 2 5 VDC This causes the output of comparator U3 to change state which lights the red LOSS OF LOCK LED on the module Also the voltage at FL2 drops from 5 to 0 VDC causing the radiate control circuitry to put the transmitter in STANDBY The output
68. or 30 dB 1 GHz Sierra 661A 30 50 Ohms 20 Watts Adjustable Attenuator Kay Elemetrics 0 100 dB Model 432D Audio Signal Generator Tektronix SG505 low distortion or equivalent Audio Distortion Analyzer Tektronix AA501 or equivalent Moseley PCL 6000 Document No 602 13375 01 Rev B AUDIO GENERATOR MONO BALANCED STEREO GENERATOR COMP m STL TRANSMITTER SUBCARRIER GENERATOR RF MUX WATTMETER 50 OHM MONO DUMMY LOAD amp BALANCED BUDIQ ATTENUATOR ANALYZER D STEREO COMP VARIABLE R DEMODULATOR ATTENUATOR z STL em RECEIVER SUBCARRIER a DEMODULATOR MUX MD1024 Figure 2 2 Typical Bench Test Setup More extensive testing can be accomplished using a stereo generator and demodulator combination and or a sub carrier generator and demodulator combination CAUTION Always operate the transmitter terminated into a proper 50 ohm load Always attenuate the signal into the receiver to less than 3000 uV Approximately 75 dB attenuation between the transmitter and receiver Observe these precautions when performing any bench test Otherwise the transmitter final transistor may be destroyed or the receiver preamplifier transistors may be damaged Moseley PCL 6000 Document No
69. point the signal is split and sent to both the FM demodulator and the log IF amplifier For FM demodulation the signal runs through a four stage limiting IF amplifier the output of which passes on to the ultra linear pulse counting FM demodulator This demodulator is extremely wideband and adjustment free The output of the FM demodulator is low pass filtered Moseley PCL 6000 Document No 602 13375 01 Rev B 1 10 System Characteristics and sent to a low noise baseband amplifier which raises the signal level to a useful system level The output is then sent to the Audio Power Supply board IF Demod PCL6020 The IF Demod module provides down conversion to the second IF 10 7 MHz sets system selectivity in the second IF extracts the baseband information from the carrier provides the logarithmic RF signal strength voltage for metering and establishes the mute threshold point of the receiver Baseband Processor The main functions of the Baseband Processor circuitry on the Audio Power Supply board are to split the baseband signal into two freguency bands 30 Hz to 80 kHz for composite and 85 kHz to 200 kHz for MUX In the extended baseband version of the PCL6000 the composite band spans 30 Hzto 110 kHz and the MUX passband extends from 120 kHz to 200 kHz For mono the split is 30 Hz to 15 kHz for audio and 28 85 kHz for MUX This module also contains the FET mute switch which is controlled by the mute comparator output of the
70. the Audio Power Supply board This voltage should be approximately 2 volts The output of the RF module is sent through an external three pole helical filter before being applied to the RFA to further reduce unwanted spurious emissions see system block diagram in Section 1 Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 4 7 4 2 2 6 Up Converter Chain 220 450 MHz The Up Converter Chain consists of a mixer high gain amplifier and filters The mixer HY1 translates the FMO signal 60 80 MHz up to the carrier freguency The mixer is double balanced for LO rejection and the conversion loss is 8 dB The output of the mixer is sent to an external 3 pole helical filter and then routed back to the RF module IPA The Intermediate Power Amplifier IPA is a four stage broadband RF amplifier AR2 ARS AR4 AR5 with 30 dB of gain and an output power of 20 dBm The output stage AR5 operates in compression to minimize any changes in gain over a wide temperature range An output power detector C124 CR16 R85 C125 is provided for the IPA Relative power is detected and relayed to the Audio Power Supply board for metering This voltage should be approximately 2 to 3 volts The output of the RF module is sent through an external three pole helical filter before being applied to the RFA to further reduce unwanted spurious emissions see system block diagram in Section 1 4 2 2 7 Up Converter Chain Doubler Assembly
71. upper left corner Board mounted INTERNAL MODE switch S6 emulates the remote input function for internal security lockout of the front panel channel selection Logic IC U5 decodes and detects channel address number 0 to toggle between EPROM control PROM ENABLE and on board manual programming control CHNL 0 ENABLE via switches 2 53 84 and S5 The EPROM outputs PROM PROGRAM are buffered by bus drivers U7 U8 and U9 The switch outputs are buffered by bus drivers U10 U11 and U12 The driver outputs are parallel connected PROGRAM OUTPUT BUS and enable bank switching of the outputs When channel number 0 is selected the switches take control and the RF module may be programmed for a user specified frequency The programming bits are assigned as shown in Table 4 1 Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 4 11 Table 4 1 Transmitter Channel 0 Programming awer Aesignment Comments 64 MHz 32 MHz 16 MHz 8 MHz 4 MHz 2 MHz 1 MHz 500 kHz 250 kHz 200 kHz 100 kHz 50 kHz 200 kHz FIX CAP ACTIVE RF Module Circuit F2 CAP ACTIVE RF Module Circuit F1 CAP ACTIVE RF Module Circuit MOD1 ADJ ACTIVE MOD2 ADJ ACTIVE MOD3 ADJ ACTIVE The two digit display DGT1 DGT2 is controlled by the EPROM outputs D0 D4 DO controls the 10 s digit and D1 D4 BCD DISPLAY are decoded by U13 to provide the 1 s display For systems with less than 16 channels the display will blank an
72. whenever one or more ofthe following conditions are present 1 The signal mute line SIGMUTE P5 4 from the IF Demod module PCL6020 or FM Demod module PCL6030 6060 is at a logic low level 0 VDC The rear panel remote mute input MUTEIN P2 8 is grounded The rear panel auto transfer input XFERIN P2 9 is at a logic high level 5 VDC This signal will force the collector of Q1 to a logic low level 4 The front panel momentary manual transfer switch S1 is activated also forcing the collector of Q1 to a logic low level 5 The AFC LOCK signal from the RF module P3 6 is at a logic low level indicating a loss of lock condition in the 2nd LO When one of the above conditions is present pin 6 of U15a will go to a logic high level This signal activates the FET mute switch U1 This signal is inverted by U15b to control the front panel OPERATE status LED and activate the driver inverter U16 U16c is a high current relay driver for the mute relay K1 When the receiver is muted pin 6 of U16 will go high and no current will flow through the relay coil This condition is also true if power to the receiver is lost In the mute mode K1 disconnects the program signal at P2 20 composite P2 18 MONO P2 16 MONO and P2 14 MUX The armature contacts of K1 are connected to the rear panel to activate alarms Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 4 13 U16a and U16b form a non invertin
73. xe t5 2 0 8 uc E Ke m JpF 8 y a lt a TOR 6 ENCE DESIGN a o s 5 5 S8 nsls Silb E zi EE di _ a I min m D o z z i o o EA ols J 9 Y E N olo B S i S e amp o i a o oj 2 E N M z vi S z z a o na SH ek Vie 0 D Es o o i co SIN GIS GIS 2 Ce o m iv 8 u all i E o o o 1 z go v els r olo mo a OR SS 5 z Qr gt a SIS o o o Ea Gr laz S oa a lplNlolc o t o 4 x NSS B S 3 ag AEN SE Zs uwe 2 lt E N ni 5 SE 5 Si Ge d o 2 og z lt lt oe z EIS ij S E e I DS ul x E E Zn rep LESS Dum a E E E o a 5 5 m gt R Y gt 3 a oO i wv 2 N N 2 i m i 4 2 z 600 10227 01 REV H Transmitter RF Module Schematic p 3 of 4 Moseley PCL 6000 Document No 602 13375 01 Rev B Schematic and Assembly Drawings 7 42 3 HAGI Let AJON3nO3M4J X3 O3TIVISNI 34V S43L14 ANY ST gne SCC 8 el HIGI E HINGI DEM HINGI ZZZ gzel HINGI IN ECAS BiZ
74. 0 6060 LOG GAIN ADJ R67 Log Gain Adjustment Calibrates the RF LVL meter function With 10 mV of signal applied to the RF input SIG LVL on the Audio Power Supply board should be adjusted for a reading of 3K on the middle scale The input should then be reduced to 100 mV and the LOG GAIN ADJ on the FM Demod should be adjusted for 100 on the middle scale The 3 10 30 100 300 1 K and 3 K levels should be checked to ensure that the meter reads between the upper and lower line on the meter for each range As a general rule SIG LVL is used to adjust the full scale or 3 K reading and the LOG GAIN ADJ on the FM Demod module is used to adjust the linearity in the 100 to 300 mV range LOG LVL TP3 Log Level Test Point A DC test point used to monitor the first stage of the meter log amplifier DEMOD LVL TP2 Demod Level Test Point A DC test point with a voltage proportional to the frequency of the 3 MHz IF Normally this voltage is between 4 and 6 VDC MUTE INDICATOR CR6 Mute Threshold Indicator LED Indicates status of mute logic red mute MUTE THRESHOLD ADJ Mute Threshold Adjust Adjusts the mute logic threshold R22 threshold 2 20 mV input signal with RF gain at 15 on receiver meter BB LVL ADJ R10 Baseband Level Adjust Adjust the output of the baseband including the composite and MUX levels 50 kHz deviation wideband or 35 kHz deviation narrowband 3 5 Vp p BB LVL TP1 Baseband Level Test Point An ac test
75. 0 6060 module indicates red Observe the RF level output of the signal generator it should indicate between 18 and 22 uV If not the MUTE THRESHOLD ADJ on the IF Demod PCL6020 or FM Demod PCL6030 6060 module should be rotated fully counterclockwise Then set the RF level output of the Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 5 7 signal generator to 20 uV and adjust the MUTE THRESHOLD ADJ until the mute threshold LED changes from off to red Troubleshooting Notes The cable between the RF signal generator and the receiver should be kept at a minimum to reduce insertion loss As an example a 3 foot cable RG 58 will cause a 1 dB or 10 loss in signal at 950 MHz 5 3 3 Receiver Selectivity Description The receiver selectivity is verified using an RF signal generator Procedure 1 Connect the equipment as shown in Figure 5 3 Set the controls on the signal generator as follows Meter Level Volts AM Modulation Off FM Deviation Off Frequency Tuned to the center frequency indicated on the serial number label on the rear panel Multichannel Option Tune to the channel frequency indicated on the Channel Assignments label on the rear panel Output Level 40 dBm adjust the output level for a reading of 3 mV on the signal generator meter RF On RF SIGNAL f ANTENNA GENERATOR RECEIVER MD1036 Figure 5 3 Selectivity Test Setup 2 Using the receiver METER FUNCTION switch select the RF LVL mete
76. 0 Document No 602 13375 01 Rev B Moseley PCL6000 7 89 ULTIPLIE RY D ECO STEP R Hn Moseley PCL 6000 BUFFER VAJA KII OHM STRIPLINE 1 7 GHz ONLY 50 y 2 zi x Zu 2 i wa 3 KE E lt s S S oo ES u alala ag ELi olelelel CIEIEIEI x SISIS GE se er EH 2 nmn SIAL oi Qe e O a S Oo oe M 5 m amp amp l Ia em c o 1 l N d E A M 8 s M u a E s 18 gt aa E IS 1 oil 18 VS al s e s lo 0 E glali 2 z z S oleje J Sib ed woju u slls E a s z z z z 8 gt A o0 Bis o a Ei z L z E a ze 4 3 N E z 2 N M a m a E z lt 2 MS P E i E 3 8 m z 600 10228 01 Rev K Receiver RF Module Schematic p 3 of 4 Document No 602 13375 01 Rev B 1 E om WE E D LE L AA gt GLA adz I
77. 0 or 11 depending on the divide ratio selected by the integrated PLL chip U1 This technique enables one divider IC to be used for small step sizes The PLL chip contains programmable dividers N A R a digital phase detector modulus control logic and lock detect circuitry to reduce chip count and increase reliability in synthesizer designs OSC1 is a temperature compensated crystal oscillator TCXO that provides a stable low phase noise reference oscillator for the phase lock loop The internal phase detector compares the VCO and reference oscillator inputs and delivers a series of pulses to the integrating loop filter Loop filter U3 is an integrating low pass filter that removes most of the reference frequency component of the phase comparator output It also provides DC gain to decrease the very low frequency noise of the 2nd LO Further filtering of the AFC voltage is then delivered to CR10 and CR11 through R30 closing the AFC loop The frequency stability of the 2nd LO is maintained by CR10 and CR11 which is attached to the stripline inductor through C62 A voltage generated by the AFC circuitry changes the capacitance of CR10 and CR11 which is also part of the tuning of the VCO resonant circuit Depending upon which capacitors are switched into the resonant circuit F1 C34 F2 C30 or FIX C26 the AFC level adjustment is used to place the phase locked loop in the center of its operating control range This is indicated by a
78. 1 7 GHz The 1 7 GHz PCL6010 utilizes a doubler to achieve the carrier frequency therefore the Upconverter is nearly identical to the 950 MHz band Up Converter The Up Converter Chain consists of a mixer high gain amplifier and filters The mixer HY1 translates the FMO signal 60 80 MHz up to the RF module output frequency 850 MHz The mixer is double balanced for LO rejection and the conversion loss is 8 dB The Intermediate Power Amplifier IPA is a four stage broadband RF amplifier AR2 AR3 ARA AR5 with 30 dB of gain and an output power of 16 dBm FL12 is a two pole helical filter that prevents intermodulation in the IPA FL11 is a three pole helical filter that provides the necessary spurious rejection for the RF module The output stage AR5 operates in compression to minimize any changes in gain over a wide temperature range An output power detector C124 CR16 R85 C125 is provided for the IPA Relative power is detected and relayed to the Audio Power Supply board This voltage should be approximately 2 volts The output of the RF module is sent to the Doubler Assembly which multiplies the modulated signal X2 to bring the carrier to the 850 MHz nominal operating frequency The output of the doubler is filtered by an external 5 pole interdigital coupled resonator filter to select the appropriate harmonic before being applied to the RFA see system block diagram in Section 1 4 2 3 RF Amplifier 4 2 3 1 RF Amplifier
79. 1 Rev B System Characteristics 1 16 3NON 31VOS i 33HS Ee gm rav ALAN dWy LINDT lt dAV LINTI NOlLdO TANNVHOILINW 304 10 69101 109 900 3INI43434 N Q3lJioddS ASIMYSHLO SS3INn S3LON dIL TTA IWNSSLX4 L e E E P dek FIR lt T4 ida 3d8 ZHW 01 APIL dMV3Hd ASSY COT 1 Noa 780 O YNNILNY A Sheet 1 of 2 Figure 1 3a PCL6030 Receiver Block and Level 92A1327 R Document No 602 13375 01 Rev B Moseley PCL 6000 1 17 Moseley PCL6000 88 k Il 88 1 Sg l lL divo 39NY 83101 KK SMG IVOS LON OQ YILIN wal S310N 304 301 39Vd 13S TANVd LNOJ 21907 ILAW NTAO TVLX AlddfS e Olanv Aldans HNX INN SLLVM 08 A Sheet 2 of 2 Figure 1 3b PCL6030 Receiver Block and Level 92A1327 R Document No 602 13375 01 Rev B Moseley PCL 6000
80. 13 2 9 1 Transmitter Ioterconnect RSE 2 14 2 9 2 Receiver Interconnect Other STL Receivers 2 17 2 9 3 Receiver Interconnect PCL6000 606 600 Composaite eee 2 18 2 9 4 Receiver Interconnect PCL6000 606 600 Mono 7 2 19 2 10 Remote Control of the STL Transmitter 2 20 2 11 Multichannel Remote Interconnect Option 2 21 3 OPERATION 3 1 3 1 Introduction iii cases eege EEN 3 1 3 20 Transmitter Operational Controls 3 1 3 2 1 Transmitter Front Panel 3 1 3 2 2 Transmitter Rear Panel 1 etel rede Recte eet ZER 3 2 32 3 Multichannel Transmitter Operation L n enne ener eene trennen 3 3 3 3 Receiver Operational Controls 3 4 3 3 1 Receiver Front Panel s a a Es A 3 4 3 3 2 Receiver Rear Panel aye mett rasvata kh 3 7 3 3 3 Multichannel Receiver Operation 3 8 Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 4 MODULE CHARACTERISTICS U u u u uu u u u 4 1 4 1 Introduction veeres 4 1 4 2 Transmitter Theory of Opera
81. 13375 01 Rev B Moseley PCL6000 3 7 NO ADJACENT INTERFERENCE 80 SNR WITH HIGH LEVEL ADJACENT SIGNALS N dB 50 100 1000 10 000 50 30 300 3000 30 000 MD1128 Figure 3 8 Typical SNR Curves 3 3 2 Receiver Rear Panel The PCL6000 receiver rear panel standard AC power is depicted in Figure 3 9 All of the program outputs COMP MONO and MUX outputs are shown The RF signal input is a type N connector The other functions on the barrier strip panel are used for standby transfer interconnections CHNL REMOTE is used for the Multichannel option All of the necessary interconnections are found in Section 2 The fused AC input is line voltage programmable see Figure 2 1 ANTENNA z EN CHNL REMOTE SQUELCH XFER MUT MTR MONO COMPOSITE OUT MUX OUT ARM NC NO OUT IN IN OUT SPARES op 1 gd FUSE MD1141 Figure 3 9 PCL6000 Receiver Rear Panel The PCL6000 receiver rear panel DC power option is depicted in Figure 3 10 The DC input panel is marked in the factory for the DC input voltage the internal ground configuration NEG GND for positive DC input ISO GND for negative or positive DC input and fuse rating See Section 4 3 for further technical information concerning the internal DC configuration Moseley PCL 6000 Document No 602 13375 01 Rev B 3 8 Operation ANTENNA CHNL REMOTE INPUT 12V 24V 48V GROUND nes 130 SQUELCH XFER MUT MTR MONO COMPOSITE OUT MUX OUT A
82. 1st LO frequency for the 950 MHz band is 1020 000 MHz 8KHz refer to system data sheet to determine exact frequency of your unit Calculate the receiver 2nd LO frequency by adding 10 700 to the 1st LO frequency and subtracting the operating frequency i e for a transmitter at 950 000 MHz the 2nd LO is 1020 000 10 700 950 000 80 700 MHz Moseley PCL 6000 Document No 602 13375 01 Rev B 5 4 Alignment Using the counter adjust the receiver 2nd LO freguency adjustment for a reading within 200 Hz of the frequency calculated in Step 6 Note Iftwo STL systems are installed for redundant operation both should be aligned for freguency at the same time Figure 5 1 Test Setup for Freguency Alignment Troubleshooting 1 5 The crystal in the transmitter 1st LO should be to 102 000 MHz for the 950 MHz band refer to system data sheet to determine exact frequency of your unit The crystal frequency of the receiver 1st LO should be the same as the PCL6010 transmitter 1st LO except in the 1 7 GHz band check the system specs If the 1st LO fails to meet the 8 kHz specified in this procedure the crystal oven should be checked to ensure that it is operating at 65 C 5 C If the transmitter frequency fails to meet the 8 kHz specified in this procedure and the 1st LO appears to be operating to specification the FMO should be checked to ensure that it is operating at its designed frequency The FMO frequency ma
83. 3 Put meter switch in AFC LVL position and adjust AFC for centerscale on the front panel meter The test point feedthrough marked AFC LVL on the RF Module should read 7 VDC AFC Adjustment F1 AFC ADJ C34 is enabled by switch S4 2 When enabled LED indicator CR6 visible through the side of the module will illuminate F2 AFC ADJ C30 is enabled by switch S4 3 When enabled LED indicator CR5 visible through the side of the module will illuminate Both adjustments are typically enabled at the same time C26 fixed cap is enabled by switch S4 4 Enable this switch when operating at 950 MHz or higher Transmitter Connect the transmitter dummy load attenuated output to the frequency counter Allow 5 minutes for the crystal oven to stabilize Adjust 1st LO XTAL tuning capacitor C84 in the RF module to set the new output carrier frequency within 25 kHz of the switch setting Receiver Adjust 70 MHz bandpass filter capacitors C41 C44 and C47 IF Demod module PCL6020 or C40 C43 C46 and C49 Double Converter LO3 module PCL6030 6060 for a peak reading on the RF LVL meter position These adjustments are found through access holes at the top of the module Put the cover back on the RF modules they are a tight fit by design and reinstall the modules in the transmitter and receiver 5 3 9 2 Transmitter Procedure Note Check the schematics of the RF module pertaining to the frequency range of the system bein
84. 30 MHz Moseley PCL 6000 Document No 602 13375 01 Rev B 7 34 Schematic and Assembly Drawings 21B2890 5 Rev D 6010 Transmitter Final Assembly 450 MHz Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 7 35 MONO MONO MUX 2 IN COMP IN x E Im u E lt 91A7444 Rev D Transmitter Audio Power Supply Schematic p 1 of 3 Moseley PCL 6000 Document No 602 13375 01 Rev B 7 36 Schematic and Assembly Drawings 5 Z2 4 x 8 S gt E z 5 2 8 m Sg E as 8 ES 12V 720 P 1 IPA SUPPLY 00
85. 6000 Document No 602 13375 01 Rev B Moseley PCL6000 4 21 The two digit display DGT1 DGT2 is controlled by the EPROM outputs D0 D4 DO controls the 10 s digit and D1 D4 BCD DISPLAY are decoded by U13 to provide the 1 s display For systems with less than 16 channels the display will blank and no programming is available DGT1 may be tested by shorting jumper E1 DGT1 TEST Analog switch IC U6 is used to compensate for modulation gain variations with freguency in the FMO Each pot adjustment R12 R13 R14 is independent of each other and is factory set for each system configuration This circuit is not installed for receiver applications Moseley PCL 6000 Document No 602 13375 01 Rev B 4 22 Module Characteristics Blank Page Required to Preserve Pagination Moseley Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 5 1 5 Alignment 5 1 Introduction This section presents alignment procedures for the PCL6000 and a list of recommended test eguipment Also included are descriptions of all module adjustments general troubleshooting information and test fixture diagrams Relevant troubleshooting information is included at the end of each alignment procedure 5 2 Test Eguipment Table 5 1 lists test equipment recommended for use in the alignment procedures Equivalent items of test equipment may also be used Any test equipment that is used for RF measurements must be rated for the frequency of opera
86. 6000 Document No 602 13375 01 Rev B Moseley PCL6000 7 137 CABLE 1 ONLY 15V 917515 Rev A Channel Control Schematic 4 of 4 Moseley PCL 6000 Document No 602 13375 01 Rev B 7 138 Schematic and Assembly Drawings lt A Ne q gt VE MOD RF BS Di WER POWER AMP 3 L TX AUDIO PO e EI OJ ei X H Moseley PCL 6000 910 10121 02 Rev C PCL6010 Multichannel Option Document No 602 13375 01 Rev B Moseley PCL6000 7 139 k Ji Na oi TION ze Ann ANO9 380 EJ dummm tre EEA INN
87. 602 13375 01 Rev B 6 2 Customer Service 6 3 Factory Service Arrangements for factory service should be made only with a Moseley technical service representative You will be given a Return Authorization RA number This number will expedite the routing of your eguipment directly to the service department Do not send any eguipment to Moseley Associates without an RA number When returning eguipment for troubleshooting and repair include a detailed description of the symptoms experienced in the field as well as any other information that well help us fix the problem and get the eguipment back to you as fast as possible Include your RA number inside the carton If you are shipping a complete chassis all modules should be tied down or secured as they were originally received On some Moseley Associates equipment printing on the underside or topside of the chassis will indicate where shipping screws should be installed and secured Ship equipment in its original packing if possible If you are shipping a subassembly please pack it generously to survive shipping Make sure the carton is packed fully and evenly without voids to prevent shifting Seal it with appropriate shipping tape or nylon reinforced tape Mark the outside of the carton Electronic Equipment Fragile in large red letters Note the RA number clearly on the carton or on the shipping label and make sure the name of your company is listed on the shipping label Insure yo
88. 602 13375 01 Rev B Moseley PCL6000 2 5 Bench Test Procedure With the wattmeter and dummy load connected to the transmitter apply AC power to the receiver The OPERATE LED will be red indicating that there is no RF Apply AC power to the transmitter and place the OPERATE STANDBY switch in the OPERATE position AFC LOCK and RADIATE will be red for several seconds and then turn green Observe that the wattmeter will indicate between 5 to 15 watts depending on the frequency band of operation and that the transmitter meter will provide readings of FWD PWR A brief period after RADIATE becomes green OPERATE on the receiver will change from red to green The RF LEVEL meter position on the receiver may be selected to determine the strength of the RF signal applied to the receiver Adjust the variable attenuator until an input signal strength of approximately 1000 uV is indicated It should be mentioned that in any bench testing where the transmitter and receiver are in close proximity there can be sufficient RF leakage from the cables to render computations of applied signal strength impractical based upon power and attenuation data Apply a 3 5 Vp p signal 1 237 VRMS from the audio signal generator at 400 Hz to the composite input of the transmitter PGM LEVEL at the transmitter and receiver meters may be selected and should indicate 0 on the dB scale The output voltage from a composite output of the receiver can be
89. 602 13375 01 Rev B Moseley PCL6000 7 127 930 03546 01 Rev G Receiver RF Module 6030 Assembly Moseley PCL 6000 Document No 602 13375 01 Rev B Schematic and Assembly Drawings 7 128 66 0 c6 0 6 alva 010 XXX F 3d8 Jl LM 1 1 ug 198079003 mola lt 91B7451 Rev E Double Converter LO3 6030 Schematic Document No 602 13375 01 Rev B Moseley PCL 6000 Moseley PCL6000 7 129 pu 20B3039 Rev E Double Conv
90. ALLISTICS R286 METER ZERO R131 POWER SUPPLY 12 V ADJ R6 Moseley PCL 6000 Hard wire jumper used to select various input levels and impedances See the table referenced in the schematic Jumper to enable IN or disable OUT the pre emphasis network E5 mono only Adjustment for lower break frequency of pre emphasis factory set Adjustment for upper break frequency of pre emphasis factory set Jumper select for monaural low pass filter IN OUT Monaural 15 kHz low pass filter adjustments factory set Monaural 15 kHz low pass filter adjustments factory set Monaural 15 kHz low pass filter adjustments factory set Compensates for low frequency roll off of mono filter factory set Sets unity gain of mono filter Selects the input program signal to be processed Composite PGM LVL meter function 0 dB 50 kHz deviation Monaural PGM LVL meter function 0 dB 40 kHz deviation Digtial modulation PGM LVL meter function REFL PWR meter function 0 dB 10096 reflected power FWD PWR meter function 0 dB 10096 output power 5 to 7 watts RF Power Amp current meter function Scale is AMPS X 10 Intermediate power amplifier relative output level meter function Relative AFC level from FMO synthesizer meter function Relative output level of 1st LO meter function MUX LVL meter function 5 on the lower scale equals 5 kHz deviation of the main carrier by the subcarrier Power supply metering adjustments
91. ANAOOAOMOONANADANANAA lt ec E Ge Z mmm mr 20B3038 Rev A RF Amplifier 330 MHz Assembly Moseley PCL 6000 Document No 602 13375 01 Rev B 7 46 Schematic and Assembly Drawings 91C7396 Rev B RF Amplifier 450 MHz Schematic Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 7 47 20B2958 Rev D RF Amplifier 450 MHz Assembly Moseley PCL 6000 Document No 602 13375 01 Rev B 7 48 Schematic and Assembly Drawings 1 MCN 1 s y W NW 3 A d fo d kens xw T zer q d d A q LA q y n d e d d amp Bs q nz 2 Se o hi AN D d KES o o e F e l ANL h JO NF Alb J B T t 2 e IT E zs Q 2 x S Q Lu Oo ul a o 9 d Le u lt M Ja ag o n a m o 2 lt
92. Adjustments The alignment of the 70 MHz C40 C43 C46 C49 bandpass filter can be checked indirectly by verifying the receiver noise performance to within 20 uV of the value specified on the final test data sheet included in this manual See paragraph 5 3 2 STL Receiver Sensitivity 1ST IF FLTR SELECT E2 E3 Selects proper filter for intended system application 1ST 10 7 MHz IF ADJ WB C14 Wideband IF Filter Adjust Determines selectivity and distortion specifications 1ST 10 7 MHz IF ADJ NB C15 Narrowband IF Filter Adjust Determines selectivity and distortion specifications 1ST 10 7 MHz IF ADJ MONO Mono IF Filter Adjust Determines selectivity and distortion C13 specifications 2ND IF FLTR SELECT E4 E5 Selects proper filter for intended system application 2ND 10 7 MHz IF ADJ COMP Composite IF Filter Adjust Determines selectivity and distortion C21 specifications 2ND 10 7 MHz IF ADJ MONO Mono IF Filter Adjust Determines selectivity and distortion C22 specifications LO3 OUT LVL FL6 LO3 Output Level DC voltage sample of 3rd LO at 13 7 MHz 0 3 1 2 VDC 5 4 9 Preamp 1st Mixer 950 MHz PCL6060 RF ATTEN ADJ R13 Sets the value of front end attenuation up to 15 dB Moseley PCL 6000 Document No 602 13375 01 Rev B 5 44 Alignment RF ATTEN LVL TP1 Indication of relative attenuation 0 VDC max atten 70 MHZ OUTPUT ADJ L3 Set for peak level of 1st IF output in this module 5 4 10 FM Demod PCL603
93. Calculation Example in Section 5 3 9 3 Put meter switch in AFC LVL position and adjust AFC for centerscale on front panel meter The test point feedthrough marked AFC LVL on the RF Module should read 7 VDC Reinstall RF Module Moseley PCL 6000 Document No 602 13375 01 Rev B 5 28 Alignment 7a 7b 7C 7d AFC Adjustment F1 AFC ADJ C34 is enabled by switch S4 2 When enabled LED indicator CR6 visible through the side of the module will illuminate F2 AFC ADJ C30 is enabled by switch S4 3 When enabled LED indicator CR5 visible through the side of the module will illuminate Both adjustments are typically enabled at the same time and both tune AFC C26 fixed cap is enabled by switch S4 4 Enable this switch when operating at 950 MHz or higher Preselector Filter 950 MHz PCL6020 6030 Filters FL 12 and FL 11 in the RF module are two and three pole helical filters with a passband of approximately 20 MHz Under normal circumstances no alignment is required To check alignment a sweep oscillator whose frequency is centered in the middle of the RF band used is injected into RF IN and the signal is monitored at IF OUT The five adjustments should be set for a flat passband greater than 5 MHz wide Preselector Filter 950 MHz PCL6060 The filter is located under the Audio Power Supply board of the receiver see system assembly drawing The filter has a passband of approximately 20 M
94. Doubler Assembly 1 7 GHz The output frequency of the TX RF module is one half the desired carrier frequency 850 MHz nominal The output is applied to the Doubler Assembly which multiplies the signal X2 and is filtered before being amplified by the RFA 1 7 GHz nominal RF Amplifier 1 7 GHz The RF Amplifier module internally consists of a four stage discrete design which amplifies the input signal 1 mW typical to the nominal 5 watt transmitter output The output is filtered to attenuate all higher order harmonics to a level of at least 60 dBc The output is sampled via a dual directional coupler with detectors that provide an indication of the forward and reflected power of the RF amplifier The final stage current is sampled and metered in this module Transmitter Control The Transmitter Control section of the Audio Power Supply board has several functions One of these is to sense the AFC LOCK detect signal from the RF module If this module goes out of lock then the radiate control logic circuit provides a signal to the power supply to turn off the 12 5 VDC supply 22 VDC for 1 7 GHz to the IPA and RFA causing the transmitter to stop radiating Remote control functions are implemented in this circuitry Metering and Status The Metering and Status circuitry on the Audio Power Supply board conditions the various system parameter samples for accurate meter indications and drives the status LEDs on the front panel Remote s
95. ER 20 m o NT Lou p pn O 4 SEY S l E E Z E lt NI 5 6 15V LO 2LVL Ka 4 7 0 m 25 A OPERATE NN 15V LO 3LVL MD1139 Figure 3 7 PCL6060 Receiver Front Panel Standard Moseley PCL 6000 Document No 602 13375 01 Rev B 3 6 Operation LO1 LVL LO2 LVL LOS LVL PGM LVL MUX LVL AFC LVL 5 V 15 V 15 V Table 3 2 Receiver Meter Functions and Scales Logarithmic Center Arc Center Arc Center Arc dB Linear Center Arc Linear Linear Linear Microvolts Relative Relative Relative dB kHz Relative Volts Volts Volts RF signal level at receiver input First Local Oscillator relative level calibrated to center Second Local Oscillator relative level calibrated to center PCL6030 6060 ONLY Third Local Oscillator relative level calibrated to center Peak program meter 0 dB 3 5 Vp p 100 modulation Subcarrier deviation AFC voltage relative level calibrated to center Power Supply Power Supply Power Supply Figure 3 8 depicts the basic shape of the SNR curve with and without high level signals in the band It should be emphasized that it is not necessarily only high level adjacent channels that can cause interference There are many combinations of signals that can give rise to intermodulation distortion which will cause the resultant product to fall within the desired passband Moseley PCL 6000 Document No 602
96. Freguency range 85 200 kHz 1 BNC connector 100 120 220 240 VAC 10 50 60 Hz 70 watts 3 5 8 9 cm high 19 0 48 3 cm wide 16 5 41 9 cm deep 12 7 kg 28 Ib domestic 1 3 4 PCL6020 PCL6030 PCL6060 Receiver Specifications RF Input Connector Sensitivity PCL6020 Composite PCL6020 Monaural PCL6030 6060 Composite PCL6030 6060 Monaural Selectivity Composite Monaural Spectral Efficient Composite Adjacent Channel Level to degrade SNR by 3 dB PCL6020 PCL6030 6060 Modulation Outputs Composite Monaural MUX Type N female 50 ohm 120 mV or less required for 60 dB SNR left or right channel de emphasized demodulated 20 mV or less required for 60 dB SNR 100 mV or less required for 60 dB SNR left or right channel de emphasized demodulated 20 mV or less required for 60 dB SNR 3 dB IF bandwidth 125 kHz 80 dB IF bandwidth 1 2 MHz 3 dB IF bandwidth 90 kHz 80 dB IF bandwidth 1 2 MHz 3 dB IF bandwidth 100 kHz 80 dB IF bandwidth 1 0 MHz 10 dBc wide band 20 dBc narrow band 10 dBc 3 5 Vp p 200 ohm unbalanced Freguency range 30 Hz 80 kHz 2 BNC connectors parallel connection 10 dBm 600 ohms balanced Freguency range 30 Hz 15 kHz Barrier strip connector 1 5 Vp p 9 100 ohm unbalanced Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 1 5 Freguency range 85 200 kHz 2 BNC connector
97. HnGL IN XNds taan 8 aag xvoo IN wHosaz a LXII a dA8 XVOO IN AHON3Z Lek ado ZL IN LayHo SINOD 33 IN LELT ZU LAH v Inge PANE 184 LELT n LELT BIVONVIS T 1 EIER MOUNT AMC 91 4 YILYJANO LNO N3XIN Lu JuHP 1 7X SOU TWNH3DXG x ozz tugp9l Hp Document No 602 13375 01 Rev B 600 10227 01 REV H Transmitter RF Module Schematic p 4 of 4 Moseley PCL 6000 Moseley PCL6000 7 43 SH oo on oo on ee oF e SE e cioe 930 03462 013 Rev H Transmitter RF Module Assembly Moseley PCL 6000 Document No 602 13375 01 Rev B 7 44 Schematic and Assembly Drawings B N SZ PPS Zo e H i D D D T D D 49382 M LAA NNN L D oe D JP A ANA 91A7459 Rev A RF Amplifier 330 MHz Schematic Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 7 45 lt pute e E JBMOMAN
98. Hz Under normal circumstances no alignment is required To check alignment a sweep oscillator whose frequency is centered in the middle of the RF band used is injected into RF IN and the signal is monitored at IF OUT The five screw adjustments should be set for a flat passband greater than 5 MHz wide Preselector Filter 220 450 MHz The filter is located at the rear of the receiver see system assembly drawing and has a passband of approximately 8 MHz This can be tuned by observing the RF LVL on the meter and peaking the three adjustment capacitors of the filter Take care not to adjust the LO filter which is located on the same bracket The preselector filter is the one that is connected directly to the ANTENNA port Preselector Filter 1 7 GHz The filter is located at the rear of the receiver see system assembly drawing and has a passband of approximately 20 MHz Under normal circumstances no alignment is required To check alignment a sweep oscillator whose frequency is centered in the middle of the RF band used is injected into RF IN and the signal is monitored at IF OUT The five screw adjustments should be set for a flat passband greater than 5 MHz wide Take care not to adjust the LO filter which is located on the same bracket The preselector filter is the one that is connected directly to the ANTENNA port Adjust 70 MHz bandpass filter capacitors C41 C44 and C47 IF Demod module PCL6020 or C40 C43 C46 and C49 Double
99. Hz 20 kHz 95 dB 0 0018796 THD Hewlett Packard Model 8559A with 18IT Display Frequency Band 0 01 3 GHz Dynamic Range 0 01 70 dB Display Range Log 10 dB and 1 dB div Display Accuracy Log gt 2 dB full range Input Impedance 50 ohm SWR 1 311 10 dB input attenuation Tektronix 7L5 with Option 25 L3 Plug in 7603 Main Frame Input Impedance 1M ohm 29 pF Input Frequency 10 Hz gt 500 kHz Display Range 80 dB log 10 dB div Hewlett Packard 435A with 8481A Power Head Accuracy 1 of full scale Power Range 25 dBm 3 uW to 20 dBm 100 mW full scale Moseley SCG 9A or equivalent Stereo SNR Separation 55 dB THD 0 1 or less Belar Stereo Modulation Monitor or equivalent Stereo SNR 75 dB Separation 55 dB THD 0 5 or less 75 dB Stereo Source Moseley custom test equipment Selector Oscilloscope High Freq Scope Probe Tektronix 465 or equivalent Bandwidth 100 MHz Tektronix 100 MHz or equivalent Multimeter Fluke Model 77 or equivalent 50 Hz Filter See Figure 5 15 600 ohm Resistor Moseley PCL 6000 RN55D6000F 600 ohm 196 1 4W Document No 602 13375 01 Rev B Moseley PCL6000 5 3 5 3 Alignment Procedures The PCL6000 alignment procedures include the following 5 3 1 STL Frequency Alignment 5 3 2 Receiver Sensitivity 5 3 3 Receiver Selectivity 5 3 4 Transmitter Deviation and Receiver Output Level Calibration 5 3 5 Ultimate Signal to Noise Ratio 5 3 6 Distortion Alignment 5 3 7 Ster
100. L E3 s E B 25 ou U gt 2 E D 5 E A cw 1002 15V lt T2 1 OF 3 FOR NOTES 8 E PAGE FLAGS THIS PAGE SEI 91B7444 Rev B Transmitter Audio Power Supply Schematic p 3 of 3 Moseley PCL 6000 Document No 602 13375 01 Rev B 7 108 Schematic and Assembly Drawings ie 20B3023 Rev D Transmitter Audio Power Supply Assembly Moseley PCL 6000 Document No 602 13375 01 Rev B 7 109 Moseley PCL6000 SJINA SILON 90gd AON300333 d3lS 4 Ja z JX LN A ZH SZ T ZH OSZ z T es af e or SE 8 Z gr Z 1 g 1 vw00Z AGL gt AGI L V v CHE KOON VC09 dnIHYIS ywose N3A D vC CC AC Ec fw ZV ly OV 8Zd VZd Gd Hogg Td OL SIIVANILNI in 40123130 eu 43M ODA NI iy 8 D L 6 TNT a BZd Vd 89d Tid OL S3 Yal lld doo 614 914 274 Yu Document No 602 13375 01 Rev B 600 10227 01 REV H Transmitter RF Module Schematic p 1 of 4
101. Level 20 10 dB DIV Depress Tuning Transmitter center frequency Figure 5 4 Test Setup For Deviation Alignment 5 Disconnect the program input to the transmitter and adjust display on the spectrum analyzer so that the waveform is at the top graticule see Figure 5 5 Moseley PCL 6000 Document No 602 13375 01 Rev B 5 10 Alignment Reconnect the program input of the transmitter The display on the spectrum analyzer should be similar to Figure 5 5 Adjust COMP PGM LVL R28 or MONO PGM LVL R199 on the Audio Power Supply board for a Bessel null of at least 50 dB on the spectrum analyzer Using the METER FUNCTION switch on the transmitter select the PGM LVL position Adjust COMP PGM MTRG R201 or MONO PGM MTRG R202 as is necessary on the Audio Power Supply board for a reading of 0 dB on the top scale of the meter MD1258A BMP Figure 5 5a Bessel Null Function Waveform CENA n TT n Figure 5 5b Function Waveform Bessel Null Hi BMP Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 5 11 6 Using the METER FUNCTION switch on the receiver select the RF LVL position Position the switches on the adjustable attenuator for an RF level reading between 1 K and 3 K on the receiver meter Set the controls on the distortion analyzer as follows Meter Function Reference level Freguency 1 0 kHz Meter Input Range 10 dB With the oscillator output connected to the transmitter connect the me
102. M 7HNS ZL 950 j3M MOLIIVAVI ee LL S NYHL 4314133 V V 13S E 3l Tid OL SIOVAHILNI x96 8Zd YZd 89d OldVdv Tid OL S39ydadL a OH 49Vd SIHI S5V73 gn in dl Y i 250 39Vd SIHL IHLO SSIINN S310 HO NI 38V S3 YIVA HOLSIS3M VH3dO TINNVHIOILTAN OV 3431 J3NNVHOIL NI n 614 914 234 LN v82 140 122 12 SHOIVN9IS3d 3ON3H113H 600 10228 01 Rev K Receiver RF Module Schematic p 1 of 4 Document No 602 13375 01 Rev B Moseley PCL 6000 7 56 Schematic and Assembly Drawings gt SE LI kt 37M 9 4 S NW K A n 2 NT S Mt VN 9c c 4 SX gS X RP gt x sx 600 10228 01 Rev K Receiver RF Module Schematic p 2 of 4 Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 7 57 LIER L JE O VERY DI RE dBm 0 s 3 3 3 3 3 alele e ale S 8 ka ND eo xd zy Es a8 lt N m uo 4 S weve y ale D z xm de ala a 2 amp E a lt WIN 5 5 S
103. Module for a detailed circuit description 4 3 2 4 1st Local Oscillator 330 450 MHz The receiver 1st LO is identical to the transmitter 1st LO circuit See section 4 2 2 4 TX RF Module for a detailed circuit description Moseley PCL 6000 Document No 602 13375 01 Rev B 4 16 Module Characteristics 4 3 2 5 1st Local Oscillator 1 7 GHz The 1st LO signal is derived from crystal controlled oscillator 5 The fifth overtone crystal Y1 102 000 MHz nominal is temperature stabilized by a 65 C proportionally controlled oven HR1 Oscillator buffers Q6 and AR1 isolate the oscillator and amplify the signal preventing frequency pulling when adjusting the multipliers The output of the buffer is doubled in an active push push doubler The single ended input from the buffer is split into two out of phase voltages in T1 and applied to the bases of Q7 and Q8 The output of these two transistors is summed at their collectors The output of the doubler is tuned by C94 and L14 and is impedance matched to the step recovery diode multiplier by C95 and C96 The diode self bias current is determined by RT1 The step recovery diode CR14 forms the heart of a X8 multiplier C98 C99 and a microstrip element The multiplier converts the input sinusoidal signal to a stream of impulses These impulses are fed to C101 which is tuned to the desired output frequency The multiplier output is routed through an external three pole helical filter and is
104. Mute and Transfer circuitry The signal is then passed through a high freguency amplitude corrector which compensates for the baseband high freguency roll off caused by the 10 7 MHz IF bandpass filters to restore proper amplitude response to the baseband signal The signal is then fed to an audio amplifier and an 80 kHz composite or 15 kHz mono low pass filter The output of this filter passes through an active group delay egualizer which compensates for the group delay variations of the low pass filter This signal is then buffered by an output amplifier that provides 3 5 Vp p output for 100 modulation The output of the high freguency amplitude corrector is also passed to a MUX high pass filter 80 kHz composite 22 kHz mono and then goes to the MUX amplifier The output of this amplifier drives a MUX low pass filter 200 kHz composite 85 kHz mono which is then buffered to yield the MUX nominal output of 1 5 Vp p Mute and Transfer The Mute and Transfer circuitry located in the Audio Power Supply board mutes the audio signal during periods of insufficient RF signal strength or for transferring operation to another receiver Metering and Status The Metering and Status circuitry located in the Audio Power Supply board conditions the metering samples and drives the status LED on the front panel and the front panel meter Remote status functions are also provided Power Supply AC The Power Supply section of the Audio Power Sup
105. OCK T14 p 2 T8 X 1 IN MU Moseley PCL 6000 91B7444 Rev D Transmitter Audio Power Supply Schematic p 1 of 3 Ti METER CK Document No 602 13375 01 Rev B NOTES Moseley PCL6000 7 69 amp z amp 2 E g E amp a 1 Li X17 i gt 989 t 1 E a zo 5 oo Eq 5 g 91B7444 Rev D Transmitter Audio Power Supply Schematic p 2 of 3 Moseley PCL 6000 Document No 602 13375 01 Rev B 7 70 Schematic and Assembly Drawings Z 10 oro yet 15 R62 0 3 L i 53 Z r E 2 VN 15V 0 R66 E THIS PAGE ICOMP IN LAGS 1 MUX 1 IN pl pl ea M N p pA L TIO 91B7444 Rev D Transmitter Audio Power Supply Sc
106. OSS DAMAGE OR EXPENSE DIRECTLY OR INDIRECTLY ARISING FROM THE USE OF EQUIPMENT PURCHASED FROM MOSELEY ASSOCIATES INC Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 FCC Notice Note This eguipment has been tested and found to comply with the limits for a Class A digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This eguipment generates uses and can radiate radio freguency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this eguipment in a residential area is likely to cause harmful interference in which case the user will be reguired to correct the interference at his own expense Any external data or audio connection to this eguipment must use shielded cables PCL6000 Manual Dwg 602 13375 01 Revision Levels SECTION REV ECO REVISED RELEASED 1 3 3 1 3 4 1 4 1 2 2 2 602 13375 01 2008 4 2 1 4 3 1 and 6 Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 Table of Contents 1 SYSTEM CHARACTERISTICS 1 1 Lt Introduction 20083 deeg sas 1 1 1 2 SYStEM EGAL KES sods 1 1 1 3 System Specifications qm
107. R 950 MHZ The adjustments for the receiver 1st LO are identical to those specified for the transmitter 1st LO see Section 5 4 2 1ST LOCAL OSCILLATOR 330 450 MHZ The adjustments for the receiver 1st LO are identical to those specified for the transmitter 1st LO see Section 5 4 2 LO2 SYNTHESIZER REF FREQ ADJ OSC1 Frequency Trim Adjustment Used to tune the reference oscillator LOSS OF LOCK CR1 This LED gives a red indication when the AFC loses lock AFC LVL FL1 AFC level test point Monitors the DC level of the AFC loop It is normally set to 7 VDC F1 AFC ADJ C34 F1 AFC Level Adjustment Adjusted for a nominal 5 9 VDC depending on the channel assignment Check the test data sheet F1 ON S4 2 Switches on the F1 AFC adjustment capacitor active F1 LED CR6 Indicates the F1 AFC adjustment capacitor is active F2 AFC ADJ C30 F2 AFC Level Adjustment Adjusted for a nominal 5 9 VDC depending on the channel assignment Check the test data sheet F2 ON S4 3 Switches on the F2 AFC adjustment capacitor active F2 LED CR5 Indicates the F2 AFC adjustment capacitor is active FIX ON S4 4 Switches on the FIX AFC adjustment capacitor active LO2 LVL TP2 LO2 level test point A DC level 0 9 VDC that represents the detected relative output of the FMO oscillator FREQUENCY SELECTOR SWITCHES S4 1 Programs the 64 MHz step size of the synthesizer S1 Programs the 4 MHz step size of the synth
108. R FUNCTION switch on the receiver select the PGM LVL function The meter should read between 1 and 1 dB on the top scale Set the freguency to 15 kHz and verify that the meter of the distortion measurement test set reads between 9 and 1 1 VRMS Adjust the METER FUNCTION switch on the distortion measurement test set to the DISTORTION position 4 Using the distortion measurement test set adjust the following controls on the IF Demod PCL6020 or Double Converter LO3 PCL6030 PCL6060 for minimum distortion PCL6020 a 1ST 10 7 MHz IF ADJ b 2ND 10 7 MHz IF ADJ PCL6030 6060 a 1ST 10 7 MHz IF ADJ MONO WB COMP NB COMP b 2ND 10 7 MHz IF ADJ MONO COMP Check the receiver configuration to verify which filter adjustments MONO monaural WB COMP wideband composite or NB COMP narrowband composite pertain to your system 5 The distortion reading should now be less than 0 2 Switch the frequency on the distortion measurement test set to 1 0 kHz Verify that the distortion reading meets specifications Troubleshooting 1 The following procedure may be used to determine if the 10 7 MHz filters are a source of high distortion a PCL6020 Remove FL1 and FL2 from the IF Demod module and replace it with a 1 0 K ohm resistor The resistor leads should first be cut between 0 3 and 0 4 inch from the body The ends of the resistor leads should then be flattened using a pair of needle nose pliers so they can be inserted in the fi
109. REV H Transmitter RF Module Schematic p 2 of 4 Moseley PCL 6000 Document No 602 13375 01 Rev B 7 74 Schematic and Assembly Drawings VDC LO LVL TB MULTIP Te FL3 T 5 Vv DE AVERY DK PRINTED CO RE A LJ n olele 2 B K Im x e x a zm E II D E ha 2 3 3 A u amp o 6 NIN lt gt A Ke H o KAS N lzlelz Su 3 m SS sy 2 E b Ll N c o no i lt Gi S 001 982 HnZZ i T II t alolslg 3 8 8 8 22 818 clele E88 oO Es 2 B m z 5 E ue _ z r r o 3 3 l o0 a 2 KIRK o z z NT l l elo a a n 3o Qo o u 4 a 8 e O no m S o 8 lt o o o r ol SR a Du ojaa SS o SE N o ui EE o o cie a N ala o 3 x S mL FREE wu I 1 l i sd eee t Ll zo olola roc EZ SISIS ul SIE Y 3 N es A E 2 amp S n E a AE cog S x e z E EVE 5 H a b x lt z z Z E z S E 5 2 W i z o a a z S Es 0 600 10227 01 REV H Transmi
110. RM NC NO OUT IN IN OUT SPARES GND 1 2 1 2 MD1136 Figure 3 10 PCL6000 Receiver Rear Panel DC Option 3 3 3 Multichannel Receiver Operation The Multichannel receiver is preprogrammed for up to 16 channels of operation The frequencies are predetermined by the customer and are factory set at time of manufacture The PCL6020 receiver front panel for the Multichannel option is depicted in Figure 3 11 The front panel display indicates the CHANNEL number that is currently active A label on the rear panel lists the particular channel assignment frequencies The front panel SELECT knob enables the user to change channels as necessary The transmitter and receiver are matched with respect to channel assignment PGM LVL MUX LVL ley RFLVL AFCLVL PCL 6020 Aural STL Receiver i Multichannel System KR o OPERATE TRANSFER 5V LO 1LVL CHANNEL SELECT 15V VA 15V e Ss des AFC LOCK SIGNAL LO 2LVL MD1134 Figure 3 11 PCL6020 Receiver Front Panel Multichannel Option 3 3 3 1 User Programmable CHANNEL 0 CHANNEL 0 is provided as a user programmable channel for backup or testing purposes This channel is set in the factory to duplicate CHANNEL 1 To set a new channel frequency see Section 5 3 Alignment Procedures or contact the Moseley Technical Services Department 3 3 3 2 Remote Control Operation The channel selection function of the Multichannel receiver can be acce
111. S D i Figure 2 3 Typical PCL6000 Site Installation Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 2 9 2 7 Program and Multiplex Installation Transmitter Figure 2 4 depicts the typical interconnection of a PCL6000 as would normally be found at the studio The left and right program material is first passed through an automatic gain control AGC unit to establish the nominal system levels This is followed by a freguency conscious audio limiter to prevent over modulation of the system as the result of the normal pre emphasis curve used in FM broadcasts It is highly desirable that the gain control or limiting units for each channel be interconnected so that any processing that occurs on one channel is performed in the same manner on the other channel i d i i i i i i i i Figure 2 4 Transmitter PGM and MUX Interconnect Composite Moseley PCL 6000 Document No 602 13375 01 Rev B 2 10 Installation The limiter outputs are then fed to a stereo generator for conversion of the left and right channels into the standard FM composite baseband signal The composite signal is then fed into the composite input of the PCL6000 The standard composite signal is unbalanced 3 5 Vp p for 100 percent modulation BNC connectors with type RG 58 A U coaxial cable are generally used for the interconnection CAUTION Never over modulate the STL transmitter as this will cause increased distortion in the received s
112. Si VERTER nd DR UO CASTILIAN Vv 111 R4 cm d EK 8 Sax a gs ses 83 MN US H n S gt 2dBM 3dB 02 2N3904 11 ON 2 SH IP2 1 32 ACT TOLERAN FR JAA ENC 01 e N 44 ONLY s lt E6 BYP CUT E Moseley PCL 6000 91B7451 Rev E Double Converter LO3 6030 6060 Schematic Document No 602 13375 01 ATION 4 a E x D PPLIC SPE C41 1 0 pF ni zi x al NOT I OR IS USED FOR M ATTENU 2 INDICATES LE NOT SCA amp E E o Rev B 7 98 Schematic and Assembly Drawings BLU E WHT 20B3039 Rev E Double Converter LO3 6030 6060 Assembly Moseley PCL 6000 Document No 602 13375 01 Rev B
113. Sn nn S S S AIR RIR IR RS S S lt S S IS S IS S IS IS D 0 D A A a 5 5 X pu gt a oo EMA 28r olli SAS a 3 AE o alo D 8 SIS S gt ale 8 g als ci 2 2 9 ES B g olala o 2 S o g S e e als 9 i 8 9 4 ole o o s oT D e DEA 5 gt ul 1 l l 2 g E q S gt b d x 5 8 x b S E N 8 z lt a 5 gt lt x lt moo 5 m S REFEREI 600 10228 01 Rev K Receiver RF Module Schematic p 4 of 4 Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 7 25 930 03595 01 Rev J Receiver RF Module 6030 Assembly Moseley PCL 6000 Document No 602 13375 01 Rev B Schematic and Assembly Drawings 7 26 TIVISN 0314133d5 3SIMM3HLO SSIINN SALON LINO TIVLSN SOVAVJOMOIM NI 3HY SINIY MOLIOYdVO SMHO NI 3 amp SINIYA 3O1SIS38 Ll 18W3SSV isnrdy O33343 ABVSS3O3N LS3L NI IMYA 1939795
114. T knob enables the user to change channels as necessary The transmitter and receiver are matched with respect to channel assignment AFC LVL IPALVL Mrealaw Moseley LOLVL PA CURRENT q a OPERATE z 7 KE PCL 6010 Aural STL Transmitter 45V A FWDPWR ee Multichannel System CHANNEL SELECT y 12V REFL PWR 7 5 STANDBY 7 15V PGM LVL lt p A S NNNNN 4 d x gt MUX LVL AS AFC LOCK RADIATE B KA Figure 3 4 PCL6010 Transmitter Front Panel Multichannel Option Moseley PCL 6000 Document No 602 13375 01 Rev B 3 4 Operation 3 2 3 1 User Programmable CHANNEL 0 CHANNEL 0 is provided as a user programmable channel for backup or testing purposes This channel is set in the factory to duplicate CHANNEL 1 To set a new channel freguency see section 5 3 Alignment Procedures or contact the Moseley Technical Services Department 3 2 3 2 Remote Control Operation The channel selection function of the Multichannel transmitter can be accessed via the back panel CHNL CONTROL connector The schematic diagram of the 9 pin D connector and the reguired interface logic is shown in Figure 2 14 and Table 2 3 Additionally the 5 position INTERNAL REMOTE dip switch SW6 on the Channel Control board must have all switches in the OPEN or 1 position for proper remote control operation The front panel CHANNEL display will indicate the current remote control state of t
115. User Manual Moseley PCL 6000 Doc 602 13375 01 January 2008 Moseley PCL6000 WARRANTY All equipment designed and manufactured by Moseley Associates Inc is warranted against defects in workmanship and material that develop under normal use within a period of 2 years from the date of original shipment and is also warranted to meet any specifications represented in writing by Moseley Associates Inc so long as the purchaser is not in default under his contract of purchase and subject to the following additional conditions and limitations 1 The sole responsibility of Moseley Associates Inc for any eguipment not conforming to this Warranty shall be at its option A to repair or replace such eguipment or otherwise cause it to meet the represented specifications either at the purchaser s installation or upon the return thereof f o b Santa Barbara California as directed by Moseley Associates Inc or B to accept the return thereof f o b Santa Barbara California credit the purchaser s account for the unpaid portion if any of the purchase price and refund to the purchaser without interest any portion of the purchase price theretofore paid or C to demonstrate that the equipment has no defect in workmanship or material and that it meets the represented specification in which event all expenses reasonably incurred by Moseley Associates Inc in so demonstrating including but not limited to costs of travel to a
116. able on the Audio Power Supply board for metering R18 MUTE THRESHOLD ADJUST provides feedback to the mute circuit pin 13 and sets the signal mute level The mute output pin 16 is sent to the mute logic circuit located on the Audio Power Supply board The current in R17 is zero Moseley PCL 6000 Document No 602 13375 01 Rev B 4 18 Module Characteristics when the guad tank is tuned to center freguency therefore a demod balance voltage is available TP1 that should be 0 0 5 volt when tuned properly The test point is available on the Audio Power Supply board for metering 4 3 5 Double Converter LO3 PCL6030 6060 System selectivity of the receiver is provided by the Double Converter LO3 module The following discussion will describe the signal flow The input signal is amplified by Q1 to overcome the insertion loss of the 70 MHz bandpass filter This amplifier also acts as an impedance transformer from the 50 ohm input impedance to the 3000 ohm impedance of the filter The primary purpose of the 70 MHz bandpass filter is to reduce undesired signals to levels that will not cause intermodulation in the 2nd mixer and 2nd IF amplifiers The 10 dB bandwidth of this filter is 4 MHz The output of the filter is impedance transformed down to 50 ohms to match the mixer The output of the filter is applied to mixer U1 through test point E1 and the optional attenuator at E6 This attenuator compensates for differing system gains of the PCL6030
117. ala a 2 amp E a lt WIN 5 5 S OW S m g SS 00 989 M 4 9 5 o A gt NIS 8 t Y JU zai mom mre T en oa lo o amp di wo EE E 8 z za z o lt a x c c o Slaelala 10 ke IEEE s L E E EE q x fe e AI lt lt z a E E lt E E ce i 5 A 8 4 wn E I e E P 2 gz 7 o 2 o m s 8 je SS Rn 5 RI m gt o o R z EARN ale olo o z z 2 8 rlslelelsle A s RRR z eR o s S l lt lt S 8 2 5 1 o u a e e a a 8 m M 6 x 7 a gar c o A s l3ls E 55 iz iz n FEE 5 z o 5 9 z2 5 lei sla o Wb x ll gt N z oL Z d ECK 6 ol n x Tom Z x uot s m z tcx a Ella 2 5 a o zig o Ke io z 818 2 2 Les E 11 g 8 ok 5 d 5 6 SIS o ou S KO i 5 z d a A i 600 10228 01 Rev K Receiver RF Module Schematic p 3 of 4 Moseley PCL 6000 Document No 602 13375 01 Rev B 7 24 Schematic and Assembly Drawings i x E i a gt a m x o ul FL1 01 Mi FMX1 5Hz 1 7 RIP TR A 60 MH 3 RO CI ale e elelelels z z
118. an be adjusted by tuning the filter screws for a peak reading of the FWD PWR meter while in the OPERATE mode 1ST LOCAL OSCILLATOR 950 MHZ XTAL OSC TUNE C84 Crystal oscillator tune Sets peak oscillator output and operating point DRIVER TUNE C88 Sets input level to the doubler for maximum odd harmonic rejection SRD INPUT MATCH1 C95 Diode drive adjustment Used to tune for maximum power output SRD INPUT MATCH2 C98 Diode drive adjustment Used to tune for maximum power output SRD OUTPUT MATCH1 C65 Diode match adjustment Used to tune for maximum power output SRD OUTPUT MATCH2 C101 Diode match adjustment Used to tune for maximum power output LO FILTER FL10 Factory set for 20 MHz bandwidth DO NOT ADJUST LO LVL FL3 Detected DC level 1 5 VDC representing power output of LO Note When installed in the PCL6010 transmitter set for the 950 MHz band the frequency output of this module should be 1020 MHz with a power output between 5 and 9 dBm This measurement should be made on a low power wattmeter 1ST LOCAL OSCILLATOR 330 450 MHZ XTAL OSC TUNE C84 Crystal oscillator tune Sets peak oscillator output and operating point DRIVER TUNE C88 Sets input level to the doubler for maximum odd harmonic rejection SRD INPUT MATCH1 C95 Diode drive adjustment Used to tune for maximum power output SRD INPUT MATCH2 C98 Diode drive adjustment Used to tune for maximum power output SRD OUTPUT MATCH C101 Diode mat
119. and IF amplifier The 10 dB bandwidth is 4 MHz Jumper E1 can be used to access this filter for testing The 2nd mixer performs down conversion of the carrier to 10 7 MHz The output is diplexed L1 L3 C1 C3 R4 to provide a constant impedance filter function and is amplified by Q1 Q2 and associated circuitry The FM demodulator is comprised mainly of U2 a high performance integrated circuit designed for wideband FM demodulation at 10 7 MHz and provides a low noise low distortion output in addition to providing a variety of internal functions The input pin 1 is preceded by the 1st IF Filter FL7 which is a linear phase monolithic ceramic resonator The signal is buffered and the output pin 2 is applied to the 2nd IF Filter FL8 These filters set the selectivity of the receiver and are adjusted for minimum distortion by C13 and C18 The signal is then fed to the IF limiter amplifier input pin 5 and the quadrature detector circuit pins 10 and 11 The quadrature tank circuit C26 C68 R16 L8 and L9 is singly tuned and U2 provides a distortion compensation circuit internally to achieve this simpler approach to quadrature detection The demodulated baseband output pin 15 is applied to amplifier U4 and the output is adjusted by R19 Baseband level TP2 may be used for monitoring The IF limiter also provides a logarithmic meter output pin 8 which is proportional to signal strength This output is fed to buffer amp U3 and is avail
120. and delay equalizer for digital STL applications Jumper E5 selects the audio for composite or monaural operation The monaural signal is processed by U8 which is an active 75 ms de emphasis network Adjustments F1 R23 and F2 R22 accurately set the de emphasis curve for optimum response Jumper E2 enables IN or disables OUT de emphasis The mono signal is optionally routed through a seven pole active filter U9 U10 and U11 with a 15 kHz cut off Adjustments FA R30 FB R78 and FC R82 are used to tune the roll off of the filter and align the phase linearity of a dual mono STL link MONO LF TILT R88 compensates for low frequency tilt caused by IF filter non linearities LPF GAIN R89 sets the overall mono low pass filter unity gain Jumper E3 selects the active filter to be in or out of the mono audio processing path Amplifier U12b enables monaural program level adjustment with R98 MONO PGM LVL The Moseley PCL 6000 Document No 602 13375 01 Rev B 4 14 Module Characteristics program level is metered at this point and R90 MONO PGM MTRG compensates for level changes between composite and monaural system switching U13 and U14 comprise an active balanced output driver stage capable of 10 dBm audio power 4 3 2 Receiver RF Module 4 3 2 1 2nd LO Synthesizer The 2nd LO Synthesizer consists of three main subgroups the RF group the digital group and the loop filter The RF group includes the voltage controlled oscillator
121. at different freguency settings therefore the gain must be compensated for Ifthe RF module is being used as a stand alone the modulation signal enters Moseley PCL 6000 Document No 602 13375 01 Rev B 4 4 Module Characteristics the RF module at J1 The signal is then applied to CR12 which is a variable capacitance diode CR12 is coupled to the resonant circuit by C39 R37 VARICAP BIAS ADJUST adjusts the bias on CR12 and is set for minimum modulation distortion usually approximately 5 V R33 MODULATION ADJUST adjusts the amount of modulation on the bias voltage applied to CR12 A 3 5 Vp p input at J1 will produce 10096 modulation 50 kHz deviation composite The signal is buffered by U4 which drives the seven section elliptical low pass filter comprised of C55 L6 C56 C57 L7 C58 C59 L8 C60 and C61 This sharp cut off filter attenuates the harmonics of the FMO The output is buffered by the resistive attenuator R78 R79 R80 to provide a level at the mixer of 6 dBm R48 is used to sample the FMO output as feedback for the high speed dual modulus prescaler U2 The prescaler divides the 70 MHz signal by 10 or 11 depending on the divide ratio selected by the integrated PLL chip U1 This technique enables one divider IC to be used for small step sizes The PLL chip contains programmable dividers N A R a digital phase detector modulus control logic and lock detect circuitry to reduce chip count and increase reliabili
122. at the meter reads within 1 dB of the transmitter meter Adjust the input range and relative ADJ controls on the distortion analyzer for a zero dB reference on its meter Position the stereo source selector to the OFF position Measure the stereo demodulated signal to noise ratio for the left channel using the input range control on the distortion analyzer Using the 50 Hz high pass filter connect the input of the distortion analyzer to the right channel and repeat the test Troubleshooting The performance of the stereo generator and stereo demodulator can be verified by connecting the output of the stereo generator directly to the input of the stereo demodulator Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 5 21 5 3 8 Stereo Crosstalk Description The crosstalk measurements are made using a stereo generator of known guality a low distortion audio oscillator and an audio spectrum analyzer Figure 5 11 Stereo Crosstalk Setup Procedure 1 Connect the eguipment as shown in Figure 5 11 This test should be run with the stereo generator pre emphasis switched out 2 Set the OPERATE STANDBY switch on the transmitter to the OPERATE position The RADIATE status LED should be green Using the METER FUNCTION switch select the FWD PWR position and verify that the meter of the transmitter reads between 3 and 2 dB on the top scale Using the METER FUNCTION switch on the transmitter select the PGM LVL posi
123. ator module 4 3 6 FM Demod PCL6030 6060 The FM Demod module performs three major functions 1 Extraction of baseband information from the frequency modulated input signal 2 Generation of DC metering signal proportional to the logarithm of the input RF carrier over a three decade range 3 Generation of a mute signal to squelch the receiver when the RF input signal is too low for reliable operation Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 4 19 4 3 6 1 FM Demodulator The 3 MHz RF signal at J3 is fed to a low noise amplifier U4 and its associated circuitry where it receives approximately 30 dB of voltage amplification This signal passes through a 3 MHz phase linear bandpass filter L8 L10 with C83 and C84 The output of this filter drives a high gain 60 dB non saturating symmetrical limiting amplifier U6 The amplitude limited signal is then fed to a precision charge count FM detector to extract the baseband information The FM detector operates as follows Q15 Q16 and Q18 form a differential amplifier with Q13 and Q14 serving as constant current collector loads This amplifier has a gain in excess of 30 dB Q10 and Q17 in conjunction with diodes CR15 through CR17 form low noise voltage clamps to ensure non saturating action of the differential amplifier transistors The current outputs of the differential amplifier alternately charge C62 and C63 through diodes CR12 and CR13 These capacitors are the
124. by a buffer and meter ballistics amplifier U12 R131 METER ZERO is used to electrically zero the meter R286 METER BALLISTICS is used to adjust the meter acceleration and ballistics response The forward power sample from the RFA enters the Audio Power Supply board on P3 1 and is amplified by U13b The output is fed to the meter circuit for front panel meter display This output also appears on P4 9 RMT FWD1 for remote metering and hot standby purposes Output P4 10 RMT FWD2 is available after the TPT THRESHOLD R138 adjustment to be used in conjunction with the MOSELEY Transmitter Transfer Panel TPT 2 to optimize the switchover point in a hot standby configuration The output of U13b is also fed to differential amplifier U14a where it is used to control the front panel radiate status indicator CR21 Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 4 3 The reflected power sample from the RFA enters the board on P3 2 and is amplified by U13a to a usable level for metering U10b buffers the RF module AFC LVL signal P5 1 for remote metering RMT AFC that appears on pin 8 J of the back panel remote connector U14b is an LED driver for the AFC LOCK status indicator CR20 on the front panel the LED is red when the AFC is out of lock and green when locked 4 2 1 5 Audio Processor The audio processor supports either monaural or composite operation The balanced monaural input is converted to an unbalanced si
125. ce the PCL6000 has a signal strength meter it is possible to determine the quality of the antenna installation and path compared to the calculations Experience at 960 MHz has indicated that for reliable year round operation with a predominantly overland path and 0 6 Fresnel zone clearance a 20 dB fade margin should be used At least a 25 dB fade margin should be allowed if the path is over water or flat terrain with little vegetation Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 2 7 2 6 Transmission Cables The transmission cable between antenna and transmitter or receiver should be coaxial cable whose loss characteristics are known Typical guality low loss foam dielectric lines such as Andrew LDF4 50 a 0 5 inch diameter cable has a 2 4 dB loss per 100 feet at 950 MHz This cable will generally be adeguate where the total cable run at both transmitter and receiver is less than 300 feet and there is a good transmission path of less than 10 miles When the total transmission cable length exceeds 300 feet an obstructed or grazing path occurs or the path length exceeds 10 miles a lower loss cable such as Andrew LDF5 50 a 7 8 inch diameter cable with a loss of 1 4 dB per 100 feet is recommended To reduce system losses it is important to select type N connectors that are designed for the type of transmission cable used in the system The connectors must be installed in accordance with the manufacturer s recommenda
126. ceiver Output Level Calibration eee 5 8 5 3 5 Ultimate Signal to Noise Ratio ese a RR i enne rennen enne 5 13 5 3 6 Distortion ene 5 14 5 3 7 Stereo Separation and Stereo Signal to Noise Ratio esee 5 17 5 3 8 Stereo 84 19 53 E 1 1 5 21 5 3 9 STI Frequency Change eer itii eter eto ee pee drerit dee 5 23 SKS LASS LEE EE 5 32 5 3 11 Transmitter Troubleshooting Procedure esee eene enne 5 34 5 4 Module Adjustments Information 5 35 5 4 1 Transmitter Audio Power Supp 5 35 5 4 2 Transmitter RF Module 5 37 5 4 3 Doubler Assembly Cl 7 GE 5 38 5 4 4 RE 5 38 5 4 5 Receiver Audio Power Supply eese eren ener ener eene trennen 5 40 5 4 6 Receiver RF Module nein tee eee e lt kk 5 41 5 4 7 TF Demiod PCEG6020 EE 5 42 5 4 8 Double Converter LO3 PCL6030 6060 nn 5 43 5 4 9 Preamp 1st Mixer 950 MHz PCL6060 n u 5 43 5 4 10 FM Demod PCL603076060 5 44 5 4 11 Adjacent Channel Filter DCL oe 5 44 5 4 12 Channel Control Board Multichannel Option 5 44 SS Test OEUODCRETICIIC NIST 5 46 6 CUSTOMER SERVICE ice aS katik auto cunc a Saata h asas EEN 6 1 6 1 Introduction csssssesssrsersessrsessessrsesssersessessrsessesessessesessessesersssesessesecsessesecsensesscsen
127. ch adjustment Used to tune for maximum power output LO FILTER EXT External LO filter Tune for maximum power output LO LVL FL3 Detected DC level 1 5 VDC representing power output of LO 5 4 3 Doubler Assembly 1 7 GHz The only adjustments to the Doubler Assembly are in the filter FL2 The filter can be adjusted by injecting a sweep signal into FL2 The filter response may be tuned by observing the output on a spectrum analyzer If a quick alignment is needed put the meter switch in the FWD PWR position and peak the reading by adjusting the filter screws 5 4 4 RF Amplifier 5 4 4 1 Alignment Procedure 950 MHz 1 Measure input level at the RFA It should be greater than 13 dBm and less than 19 dBm damage level If power level is low peak the external RFA filter Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 5 39 5 Connect RFA output to power meter and spectrum analyzer using an appropriate high power attenuator dummy load Connect input and adjust R1 1st stage bias through access hole in RFA for 6 watts 38 dBm Monitor PA final current sample voltage across C701 and C702 Calculate final current Vsample divided by 0 16 Current should be lt 1 7 amp Check harmonic and spurious signal content for level lt 65 dBc 5 4 4 2 Alignment Procedure 450 MHz 1 Measure input level at the RFA It should be greater than 18 dBm and less than 23 dBm damage level If power le
128. cient resolution of your problem will be facilitated by an accurate description of the problem and its precise symptoms For example is the problem intermittent or constant What are the front panel indications If applicable what is your operating frequency Technical consultation is available at 805 968 9621 from 8 00 a m to 5 00 p m Pacific time Monday through Friday During these hours a technical service representative who knows your product should be available If the representative for your product is busy your call will be returned as soon as possible Leave your name station call letters if applicable type of equipment and telephone number s where you can be reached in the next few hours Please understand that in trying to keep our service lines open we may be unable to provide walk through consultation Instead our representative will usually suggest the steps to resolve your problem try these steps and if your problem remains do not hesitate to call back After Hours Emergencies Emergency consultation is available at 805 252 2133 from 5 00 p m to 10 00 p m Pacific time Monday to Friday and from 8 00 a m to 10 00 p m Pacific time on weekends and holidays Please do not call during these hours unless you have an emergency with installed equipment Our representative will not be able to take orders for parts provide order status information or assist with installation problems Moseley PCL 6000 Document No
129. d level D 6 dB 60 dB in this example Nonlinear crosstalk Measurement of the ratio in dB of harmonic products in the subchannel referred to 15 kHz L R at 100 modulation in the main channel M amp S measurement of the ratio in dB of intermodulation products in the main channel referred to 7 5 kHz L R at 10096 modulation in the subchannel S amp M 5 3 9 STL Frequency Change 5 3 9 1 Quick Frequency Change Procedure This simplified procedure is intended for users with prior experience in changing STL frequency This guide covers the switch settings for the 950 MHz band products only For frequencies not listed and for all other users refer to the detailed instructions that follow in Sections 5 3 9 2 for the transmitter and 5 3 9 3 1 Remove RF Modules from respective units transmitter and receiver Remove the cover from component side of module 2 Determine the switch settings from Table 5 2 Frequency Selection Chart 950 MHz Band given below and set switches SO to S3 accordingly on both transmitter and receiver RF Modules Moseley PCL 6000 Document No 602 13375 01 Rev B Alignment 5 24 Table 5 2 Freguency Selection Chart 950 MHz band Transmitter Receiver Transmitter Receiver eo N eo CM N I z o xw eo CM Document No 602 13375 01 Rev B Moseley PCL 6000 Moseley PCL6000 5 25
130. d no programming is available DGT1 may be tested by shorting jumper E1 DGT1 TEST Analog switch IC U6 is used to compensate for modulation gain variations with frequency in the FMO located in the transmitter RF Module Each pot adjustment R12 R13 and R14 operates independent of each other and is factory set for each system configuration Moseley PCL 6000 Document No 602 13375 01 Rev B 4 12 Module Characteristics 4 3 Receiver Theory of Operation 4 3 1 Receiver Audio Power Supply 4 3 1 1 Power Supply AC The power supply consists of an AC power connector P1 transformer rectifier CR1 capacitive filters C4 C5 and fixed linear regulators VR1 VR2 VR3 VR4 The power supply has four output voltages 15 15 5 12 The regulated 12 VDC is used to power the crystal ovens for the 1st LO and 2nd LO crystals WARNING Failure to ground the third lead of the input power cord may result in hazardous shocks to personnel The AC power connector includes an RF filter The transformer primary windings support the four selectable input voltage ranges 100 120 220 and 240 VAC Operating voltage is selected by programming the line filter fuse holder on the rear panel as described in Section 2 2 1 AC Line Voltage Selection 4 3 1 2 Mute and Transfer The Mute and Transfer circuitry contains the necessary logic to sguelch the receiver during periods of insufficient RF signal strength The receiver will mute
131. distortion analyzer is used to align the receiver 10 7 MHz IF filters for minimum distortion This method assumes the FMO will contribute a negligible amount of distortion to the overall reading Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 5 15 The FMO distortion can be verified independently of the receiver by referring to Section 5 3 10 FMO Adjustment Figure 5 8 Test Setup for Distortion Alignment Procedure 1 Connect the eguipment as shown in Figure 5 8 and adjust controls on the distortion measurement test set as follows Meter Function Input level Filters 400 Hz In 80 kHz In Distortion Range 0 3 Input Range 10 dB Freguency 1 0 kHz Oscillator Level 10 dBm from 600 ohm source 2 Position the OPERATE STANDBY switch on the transmitter to the OPERATE position The RADIATE status LED should be green Using the METER FUNCTION switch on the transmitter select the FWD PWR position and verify that the meter reads between 3 and 2 dB on the top scale Using the METER FUNCTION switch on the transmitter select the PGM LVL function and verify that the meter reads between 1 and 1 dB on the top scale 3 Using the METER FUNCTION switch on the receiver select the RF LVL function Moseley PCL 6000 Document No 602 13375 01 Rev B 5 16 Alignment Position the switches on the adjustable attenuator for a reading between 1 k and 3 k microvolts on the middle scale of the receiver meter Using the METE
132. distortion measurement test set for a 10 dB reference on its front panel meter Disconnect the composite input at the transmitter rear panel Using the INPUT RANGE switch on the distortion measurement test set measure the ultimate wideband SNR Note The reference is 10 dB hence a meter input range indicating 60 and a meter reading of 6 would indicate an SNR of 76 dB 5 Position the INPUT RANGE switch to 10 dB and reconnect the program input to the transmitter composite BNC connector Moseley PCL 6000 Document No 602 13375 01 Rev B 5 14 Alignment Figure 5 7 Test Setup For Signal To Noise Ratio Measurement Troubleshooting 1 If the STL link fails to meet the ultimate SNR specification the sensitivity test paragraph 5 3 2 should be performed on the receiver prior to troubleshooting the transmitter 2 If the STL link fails to meet the SNR specification and the transmitter is suspected the following method may be used to help isolate the problem a Using the 80 kHz filter on the distortion measurement test set measure the baseband output of the TX Audio Power Supply board for a reading at least 5 dB greater than specified for the ultimate SNR b Substitute the 1st LO signal 1020 MHz for the 950 MHz band using an RF signal generator such as the HP 8640B at an output level of 10 dBm C Substitute the FMO signal using the RF signal generator at an RF level of 0 dBm 5 3 6 Distortion Alignment Description A
133. e matched to the step recovery diode multiplier by C95 and C96 The diode self bias current is determined by RT1 The step recovery diode CR14 forms the heart of a X5 multiplier C98 C99 and the 12 nH printed inductor The multiplier converts the input sinusoidal signal to a stream of impulses These impulses are fed to an LC output circuit L16 and C101 which is tuned to the desired output frequency The three pole helical filter FL10 is tuned to the LO output frequency 1020 MHz nominal for 950 MHz 920 MHz nominal for 1 7 GHz The output is terminated into a 3 dB attenuator reducing the output power to that required by the 1st mixer and providing a wideband match for the filter The undesired harmonics are suppressed at least 40 dB The output power is between 5 and 9 dBm 4 2 2 3 1st Local Oscillator 220 MHz The 1st LO signal is derived from crystal controlled oscillator Q5 The fifth overtone crystal Y1 97 000 MHz nominal is temperature stabilized by a 65 C proportionally controlled oven Moseley PCL 6000 Document No 602 13375 01 Rev B 4 6 Module Characteristics Oscillator buffers Q6 and AR1 isolate the oscillator and amplify the signal preventing frequency pulling when adjusting the multipliers The output of the buffer is phase shifted in T1 and applied to the base of Q7 The output of the transistor is impedance matched to the step recovery diode multiplier by C95 The step recovery diode CR14 and the 12 nH pri
134. e separation meets specification between 1 kHz and 15 kHz Vert 10 dB div Horz 2 KHz div Figure 5 10 Swept Separation Waveform Note The COMP HF TILT and DELAY EQ module affect both the left and right channel separation Paragraphs 3 and 4 may be repeated to assure optimum performance on both channels 5 Connect the audio output of the distortion analyzer to the stereo source selector Connect the left output of the stereo demodulator to the input of the distortion analyzer Set the frequency on the distortion measurement test set to 1 kHz Select the LEFT RIGHT position on the stereo source selector Adjust the output level on the distortion measurement test set for a reading of zero dB on the top scale of the transmitter Using the METER FUNCTION switch on the receiver select the PGM LVL position and verify that the meter reads within 1 dB of the transmitter program level Adjust the input controls on the distortion measurement test set for a zero dB reference Set the frequency on the distortion measurement test set to 30 Hz Verify that the reference on the distortion measurement test set is 0 5 dB Moseley PCL 6000 Document No 602 13375 01 Rev B 5 20 Alignment Select the RIGHT ONLY position on the stereo source selector Using the input attenuator on the distortion measurement test set measure the separation Adjust COMP LF TILT R61 on the RX Audio Power Supply board for maximum separation Verify
135. ed all of the internal interlocks are enabled In Moseley PCL 6000 Document No 602 13375 01 Rev B 3 2 Operation the STANDBY position transmitter operation is controlled by external switching control and the internal interlocks Table 3 1 Transmitter Meter Functions and Scales PGM LVL MUX LVL Linear REFL PWR dB AFC LVL Center Arc Relative LO LVL Center Arc Relative IPA LVL Center Arc Relative PA CURR Linear X 0 1 Amps 5 V Linear Volts 12 V Linear Volts 15 V Linear Volts 15 V Linear Volts 3 2 2 Transmitter Rear Panel RFA Forward Power in dB 0 dB 100 power output Peak Program Meter 0 dB 3 5 Vp p 100 modulation Subcarrier deviation RFA Reflected Power in dB 0 dB 100 reflected power 10 dB to 20 dB safe AFC voltage relative level calibrated to center Local Oscillator relative level calibrated to center Intermediate Power Amplifier relative level calibrated to center RFA final stage current Power Supply RFA supply STBY 1 5 VDC Power Supply Power Supply The PCL6010 transmitter rear panel standard AC power is depicted in Figure 3 2 All of the program inputs COMP MONO and MUX inputs are shown The RF power output is atype N connector TX REMOTE is used for external remote operation and standby transfer interconnections CHNL REMOTE is used for the Multichannel option All of the necessary interconnections are found in Section 2 The fused AC input
136. eesecsensnssesenees 6 1 Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 6 2 Technical Consultation weeseoosooosoonooenooonooonoonooenooeno noo enooense onne enne eo sete seen oeenoeev esse oenooeae esse one 6 1 6 3 Factory Service sses T 6 2 6 4 Field Repair 6 2 7 SCHEMATICS AND ASSEMBLY DRAWINGS J 7 1 7 1 PCL 6000 220 STD 602 10300 71 Rev A 7 1 72 PCL 6000 330 450 STD 602 10301 71 Rev A 7 32 7 3 PCL 6000 950 STD 602 10299 71 Rev A 7 66 7 4 PCL 6000 1 7 GHz Standard System 7 103 Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 List of Figures Figure 1 1a b PCL6010 Transmitter Block and Level 1 12 13 Figure 1 2a b PCL6020 Receiver Block and Level anna 1 14 15 Figure 1 3a b PCL6030 Receiver Block and Level 1 16 17 Figure 1 4a b PCL6060 Receiver Block and Level 1 18 19 Figure 2 1 L
137. eo Separation and Signal to Noise Ratio 5 3 8 Stereo Crosstalk 5 3 9 STL frequency Change 5 3 10 FMO Adjustment 5 3 11 Transmitter Troubleshooting Procedure 5 3 1 STL Frequency Alignment Description The STL frequency is aligned by using a counter to measure the transmitter output frequency and the receiver 1st LO frequency A high precision counter 0 2 ppm is recommended to align STL links that are used in a redundant installation If such a counter is not available we recommend that both STL systems be aligned at the same time using the same counter Procedure 1 2 Connect the equipment as shown in Figure 5 1 Position the transmitter OPERATE STANDBY switch to the OPERATE position Verify that the RADIATE and AFC LOCK status LEDs are green Using the METER FUNCTION switch select the FWD PWR position Verify that the front panel meter reads between 3 and 2 dB on the top scale Check the serial number label on the back of the transmitter for its operating center frequency The counter should indicate the frequency within 8 kHz of the specified center frequency If it does not proceed to the troubleshooting portion of this procedure and verify that the 1st LO and FMO are operating at their specified frequencies refer to system data sheet supplied with the unit While monitoring the counter adjust the transmitter FMO frequency trim adjustment for a reading of the specified transmitter frequency 200 Hz The receiver
138. er to radiate The OPERATE STANDBY switch S1 on the front panel is a double pole double throw switch used to activate logic circuits within the transmitter and is connected through the harness to pin 3 C of the back panel remote connector RMT MODE for remote indication of the OPERATE STANDBY mode For 12 24 and 48 VDC supply configuration Q3 provides a logic level output to switch the internal DC supply on and off according to the RADIATE status The schematic references this option 4 2 1 3 PA Current Signal Conditioner The voltage drop appearing across the PA current sampling resistor in the RFA module is presented to the Audio Power Supply board on P3 9 and P3 10 Amplifier U15 and FET Q1 provide a current sample for the meter that is independent of the RFA supply voltage The current to voltage conversion is different for the various frequency bands 220 950 MHz 0 18 VDC per Ampere 1 7 GHz 0 16 VDC per Ampere The sample voltage is measured at the input terminals of the RFA module 4 2 1 4 Metering and Status The Metering Functions are selected by the front panel meter switch S2 and are calibrated by potentiometers R151 15V R153 15V R155 12V R157 5V R166 LO1 R165 AFC LVL R164 IPA LVL R163 PA CURRENT R162 FWD PWR R161 REFL PWR R201 COMP PGM MTRG R202 MONO PGM MTRG R203 DIG PGM MTRG The signals are processed by absolute value amplifier and peak detector U11 This output is followed
139. erminals C701 and C702 This sample is fed to the Audio Power Supply board and a test point is provided for monitoring The seven section low pass filter following AR1 is realized in a lumped element configuration utilizing air coil inductors L3 L4 L5 and chip capacitors C6 C7 C8 C9 The filter attenuates the harmonics of the final stage to better than 60 dBc per FCC requirements The dual directional coupler DC1 is fabricated using a copper shielded twisted pair coaxial line to provide high directivity therefore assuring accurate forward and reflected power sampling Detectors CR2 and CR3 provide DC meter samples for reflected and forward power respectively These sample voltages are fed to the Audio Power Supply board The forward and reflected power sample is conditioned and fed to the meter for monitoring Forward power voltage level at C721 is approximately 2 5 VDC for the nominal 10 watts output Reflected power voltage level at C722 is approximately 2 5 VDC for the 100 reflected power Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 4 9 The RFA supply bridge diode CR101 and regulator Q101 are mounted to the heat sink of the RFA 4 2 3 3 RF Amplifier 330 MHz The RFA module is a three stage discrete bipolar amplifier utilizing lumped elements for impedance matching and tuning The amplifier provides 20 dB of gain to an output level of 10 watts The input applied at J1 is nominally 20 dBm 100
140. erter LO3 6030 Assembly Moseley PCL 6000 Document No 602 13375 01 Rev B Schematic and Assembly Drawings 7 130 LNO HISN 81 TWNOIS 4M A NI AW 8 02 8 1r ILAW NO MAK ONS via 8 A up NOT V bap NE ll YOGE WO7ZP747 2HM SE ore 9 4220 NOLLVIASQ 2405 oer d dAL 1 La 13S T3431 ONYAISVA 73A31 TWNOIS NVSdSVH d d age ASL 208 F NI Aw X027 AZ 1 gt on vo NI 38V SHOLSIS3H L NAHL Ya SLNIOd Sl Od 1S3L S og EE NI NUE X083 48 9 TVN9IS 73437 907 20 ZZ seu ov ATOHSJAHL ILAN dd sngg o AGL U LATIANV GNVEASVE 06FNZ LION CG AATAITANV DOT Vit L oer d dazi 4 dH HW OF NI wagp oi 02F d d 4 i Q GR A INL wl Ji OT 9028 yn 894 UALIWIT 90727 777 Wa HAALAITANV TAA 91B7387 Rev F FM Demod 6030 Schematic Document No 602 13375 01 Rev B Moseley PCL 6000 Moseley PCL6000 7 131 D
141. esizer S2 Programs the 250 kHz step size of the synthesizer S3 Programs the 25 kHz step size of the synthesizer 5 47 IF Demod PCL6020 1ST 10 7 MHz IF ADJ C13 IF Adjustment Adjust for minimum distortion 2ND 10 7 MHz IF ADJ C18 IF Adjustment Adjust for minimum distortion Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 5 43 Note The L02 FREQ ADJ and the 1st 10 7 MHZ IF ADJ and 2nd 10 7 MHz IF ADJ interact See paragraph 5 3 6 Distortion Alignment for additional information 70 MHz BPF ADJ Bandpass Filter Adjustments The alignment of the 70 MHz C41 C44 C47 bandpass filter can be checked indirectly by verifying the receiver noise performance to within 20 uV of the value specified on the final test data sheet included in this manual See paragraph 5 3 2 Receiver Sensitivity MUTE THRESHOLD R18 Mute Threshold Adjust Adjusts the mute logic threshold threshold 20 uV input signal BB LVL ADJ R19 Baseband Level Adjust Adjust the output of the baseband including the composite and MUX levels 50 kHz deviation 3 5 Vp p BBLVL TP2 Baseband Level Test Point An AC test point used to monitor the output level of the baseband processor 50 kHz deviation 3 5 Vp p DEMOD BALANCE TP1 Demod Balance Level Is an indication of quadrature coil balance minimum distortion and or demodulator free drift 0 1 VDO 5 4 8 Double Converter LO3 PCL6030 6060 70 MHz BPF ADJ Bandpass Filter
142. eter is to observe the peak values of program material Three bi color status LEDs indicate the operational status of the receiver SIGNAL is green when there is sufficient RF signal to exceed a user established threshold of RF signal that correlates to the minimum SNR that is acceptable to the user When SIGNAL is red there is insufficient signal to meet the minimum SNR requirements and the receiver is placed in a non operating muted condition which is indicated when OPERATE is red When the receiver is operating properly OPERATE is green AFC LOCK indicates the condition of the synthesized second LO It is green when the PLL is locked Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 3 5 a Mose ey SCH NN RF LVL I AFC LVL AFC LOCK SIGNAL PCL 6020 Aural STL Receiver TRANSFER 7 45V LO 1LVL Z PS AE E M 15V LO 2LVL OPERATE 15V A NNNNNNNNN MD1140 Figure 3 5 PCL6020 Receiver Front Panel Standard I f S 0 PGM LVL MUX LVL RAE KI Moseley MTS ae E E oh AFGEVE AFC LOCK SIGNAL PCL 6030 Aural STL Receiver p WW 2 LL GZ xsv LO 1LVL lt RW KE lt N kd 15V LO 2LVL e e Md idi NN gt s 25 ss OPERATE p 15V LO 3LVL JV Xi WO WO see s MD1133 Figure 3 6 PCL6030 Receiver Front Panel Standard za Moseley v S E s nu ARSIS AFC LOCK SIGNAL PCL 6060 Aural STL Receiver TRANSF
143. ey PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 7 79 K mit GE NEI wy 13Nyd 0 1 1 INTON 28 7 ANOD 180 b 1 g gt i Bs al z q B d B d 3 gd amp H y D D Z a Il E o 1 tcbcCoczos rere ain pf B 23 m ME a a cm ul e p Mi il bim d a Li a o a E a o m li a e nl N E LS pm u S af o RB Tl ER fo N N my DL H P c OW 21B2891 1 Rev D 6020 Receiver Final Assembly Moseley PCL 6000 Document No 602 13375 01 Rev B 7 80 Schematic and Assembly Drawings CN x j Td d BLASEN w 7 B wa don A i ANO 180 w q B B T amp B q B i Bs d Bs q A
144. f approximately 20 MHz Under normal circumstances no alignment is required To check alignment a sweep oscillator whose frequency is centered in the middle of the RF band used is injected into RF IN and the signal is monitored at IF OUT The five screw adjustments should be set for a flat passband greater than 5 MHz wide PRESELECTOR FILTER 220 450 MHZ The filter is located at the rear of the receiver see system assembly drawing and has a passband of approximately 8 MHz This can be tuned by observing the RF LVL on the meter and peaking the three adjustment capacitors of the filter Take care not to adjust the LO filter which is located on the same bracket The preselector filter is the one that is connected directly to the ANTENNA port Moseley PCL 6000 Document No 602 13375 01 Rev B 5 42 Alignment PRESELECTOR FILTER 1 7 GHZ The filter is located at the rear of the receiver see system assembly drawing and has a passband of approximately 20 MHz Under normal circumstances no alignment is reguired To check alignment a sweep oscillator whose frequency is centered in the middle of the RF band used is injected into RF IN and the signal is monitored at IF OUT The five screw adjustments should be set for a flat passband greater than 5 MHz wide Take care not to adjust the LO filter which is located on the same bracket The preselector filter is the one that is connected directly to the ANTENNA port 1ST LOCAL OSCILLATO
145. fed to an audio analyzer The output voltage should be approximately 3 5 Vp p 1 237 VRMS The audio input signal may be removed and the broadband signal to noise ratio SNR determined SNR 20log RMS voltage MID E RMS voltage without modulation Note Demodulated stereo SNR will be approximately 12 dB greater than broadband SNR While this concludes the basic bench test of the units the user may want to run further experiments to become familiar with the system Sections 3 4 and 5 should be consulted for a thorough understanding of the STL system before proceeding with any higher level testing It must be noted that any testing for stereo performance must be accomplished with a very high guality stereo generator and stereo demodulator combination The stereo generator and demodulator combination should be tested back to back to determine their performance independently of the STL link 2 4 Rack Installation The PCL6000 units are designed for mounting in standard rack cabinets preferably between waist and shoulder height The transmitter and receiver have mounting holes for Chassis Trak C 300 5 1 14 chassis rack slides If the rack will accept chassis rack slides their use is recommended If chassis rack slides are used be sure to leave atleast a 15 inch service loop in all cables to the eguipment When mounting the transmitter or receiver in a rack the unit must have an unobstructed free flow of cooling air across the rear pa
146. fies the input signal 100 mW typical to the nominal 8 watt transmitter output The output is filtered to attenuate all higher order harmonics to a level of at least 60 dBc The output is sampled via a dual directional coupler with detectors that provide an indication of the forward and reflected power of the RF amplifier The final stage current is sampled and metered in this module Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 1 7 RF Amplifier 330 MHz The RF Amplifier module internally consists of a three stage discrete design which amplifies the input signal 100 MW typical to the nominal 8 watt transmitter output The output is filtered to attenuate all higher order harmonics to a level of at least 60 dBc The output is sampled via a dual directional coupler with detectors that provide an indication of the forward and reflected power of the RF amplifier The final stage current is sampled and metered in this module RF Amplifier 220 MHz The RF Amplifier module internally consists of a two stage discrete design which amplifies the input signal 100 MW typical to the nominal 8 watt transmitter output The output is filtered to attenuate all higher order harmonics to a level of at least 60 dBc The output is sampled via a dual directional coupler with detectors that provide an indication of the forward and reflected power of the RF amplifier The final stage current is sampled and metered in this module
147. g low noise gain The postselector filter provides further filtering as well as image noise rejection Preselector Filter 950 MHz PCL6060 The antenna input signal is first passed through the Preselector Filter which is a five element interdigital bandpass filter with a 20 MHz bandwidth and maximum insertion loss of 1 5 db This filter has superior rejection due to its mechanical implementation Preamp 1st Mixer 950 MHz PCL6060 The output of the Preselector Filter is fed to the Preamp 1st Mixer module This module incorporates an adjustable PIN diode attenuator for user adjustable front end protection The low noise high intercept point preamplifier is followed by the image noise filter The 1st Mixer down converts the carrier to the first IF 70 MHz by mixing with the 1st LO and is buffered for transmission to the Double Converter LO3 module Preselector Filter 220 450 MHz The antenna input signal is first passed through the Preselector Filter which is a three element helical bandpass filter with an 8 MHz bandwidth and maximum insertion loss of 1 5 db This filter has superior rejection due to its mechanical implementation Preselector Filter 1 7 GHz The antenna input signal is first passed through the Preselector Filter which is a five element interdigital bandpass filter with a 20 MHz bandwidth and maximum insertion loss of 1 5 db This filter has superior rejection due to its mechanical implementation Moseley PCL
148. g modified If the frequency change falls outside of the original range listed the 1st LO crystal frequency must be changed Consult the factory if this is the case Multichannel Option If this is a multichannel system refer to Section 5 3 9 4 1 2 Connect 50 ohm high power dummy load to transmitter RF output Remove RF Module from transmitter Remove the cover from component side of module a Calculate the FMO frequency as follows check the system data sheet for the exact frequency Moseley PCL 6000 Document No 602 13375 01 Rev B 5 26 Alignment For a High Side LO LO gt CARRIER FMO frequency LO freq CARRIER freq For a Low Side LO LO CARRIER FMO frequency CARRIER freq LO reg b Program the synthesizer switches 84 1 S1 S2 S3 in the RF module for the correct frequency Please refer to the Synthesizer Frequency Calculation Example in Section 5 3 9 3 4 Put meter switch in AFC LVL position and adjust AFC for centerscale on the front panel meter The test point feedthrough marked AFC LVL on the RF Module should read 7 VDC AFC Adjustment F1 AFC ADJ C34 is enabled by switch S4 2 When enabled LED indicator CR6 visible through the side of the module will illuminate F2 AFC ADJ C30 is enabled by switch S4 3 When enabled LED indicator CR5 visible through the side of the module will illuminate Both adjustments are typically enabled at the same time and
149. g relay driver for remote transfer to another receiver in a hot standby installation This output XFEROUT appears at P2 7 and is routed to the rear I O panel Refer to Section 2 of this manual for further information 4 3 1 3 Metering and Status The Metering Functions are selected by the front panel meter switch S2 and are calibrated by potentiometers R210 15V R212 15V R213 5V R172 SIG LVL R171 PGM LVL R170 MUX LVL R169 AFC LVL R169 LO1 R168 LO2 R167 LO3 The signals are processed by absolute value amplifier and peak detector U19 This output is followed by a buffer and meter ballistics amplifier U20 R186 METER ZERO is used to electrically zero the meter R196 METER BALLISTICS is used to adjust the meter acceleration and ballistics response Amplifier U17b drives the SIGNAL LED CR20 on the front panel SIGNAL is red when a carrier signal is not present and green when a carrier signal is present Amplifier U17a drives the AFC LOCK LED CR19 on the front panel Green indicates the 2nd LO Synthesizer is properly locked Red indicates a loss of lock Amplifier U18a drives the OPERATE LED CR21 on the front panel Green indicates the receiver is not muted as determined from the Mute and Transfer circuitry Red indicates a mute or standby condition 4 3 1 4 Audio Processor The baseband input enters the Audio Power Supply board at J1 U1 is a FET mute switch that is controlled by the Mute and Tran
150. gnal with the active balanced input amplifier U9 and U8 Jumper E6 enables the user to optimize the network for different nominal input impedance and levels see the table in the schematic The second half of U8 is an active 75ms pre emphasis network enabled by jumper E5 F1 R77 and F2 R78 adjust the low and high freguency break points for optimum freguency response The monaural signal is routed through a seven pole active filter U7 U6 and U5 with 15 kHz cut off Adjustments FA R76 FB R75 and FC R49 are used to tune the roll off of the filter and align the phase linearity of a dual mono STL link LF TILT R47 compensates for low freguency tilt caused by IF filter non linearities LPF GAIN R45 sets the overall monaural low pass filter unity gain Jumper E4 selects the active filter to be in or out of the monaural audio processing path Jumper E3 selects either the monaural or composite input to the audio processor U3a is a non inverting amplifier to set the program levels of the audio processor for all configurations MONO R199 COMPOSITE R28 and DIGITAL R28 The MUX inputs are summed into U3b and the levels are independently adjustable MUX1 R29 and MUX2 R40 The PROGRAM and MUX signals are summed into U2b and both levels are routed to the metering circuits at this point U2a is an inverter which is selectable E2 to match the STL link audio phase when using different receivers The baseband output is at J1 which is app
151. gure 5 9 This test should be run flat i e the stereo generator pre emphasis and the stereo demodulator de emphasis should be switched out If this cannot be accomplished the system modulation reference level should be reduced to 20 dB at 400 Hz Adjust the controls on the audio spectrum analyzer as follows Freguency Far left graticule Dot Freguency Zero Hz LOG 10 dB DIV Source FREE RUN Moseley PCL 6000 Document No 602 13375 01 Rev B 5 18 Alignment Mode NORM Termination 1 Megohm REF dBV Resolution Coupled SPAN DIV 2 kHz Time DIV Auto Tracking GEN ON 2 Set the OPERATE STANDBY switch on the transmitter to the OPERATE position Verify that the RADIATE LED is green Using the METER FUNCTION switch on the transmitter select the FWD PWR position Verify that the meter reads between 3 and 2 dB on the top scale Using the METER FUNCTION switch on the transmitter select the PGM LVL position Adjust the dot frequency on the audio spectrum analyzer to 1 0 kHz and the SPAN DIV to zero Adjust the level control on the audio spectrum analyzer for a reading of zero dB on the top scale of the transmitter meter n the dot frequency on the audio spectrum analyzer to zero and the SPAN DIV to 2 Z Using the METER FUNCTION switch on the receiver select the RF LVL position Position the switches on the adjustable attenuator for a reading between 1 K and 3 K on the receiver meter middle scale Using the METER FUNCTION switch on the receiver
152. hannel Control board connects to the RF module via a 25 pin D ribbon cable The RF module must be compatible for multichannel operation Please contact the factory for field retrofit of the system 1 4 2 PCL6020 PCL6030 PCL6060 Receivers The PCL6000 System has three receivers which are designed for different RF environments The PCL6060 and PCL6030 are triple conversion receivers which provide maximum out of band and adjacent channel protection The PCL6060 exhibits superior front end performance in the presence of extremely strong RF fields as it uses modules from the time proven Moseley PCL606 STL The PCL6020 is a dual conversion receiver that provides maximum performance in all but the most demanding environments Both systems are switchable to support mono or composite operation The receivers are modular in construction and operation and the system description given below follows the signal flow through the various modules Refer to Figures 1 2a b 1 3a b and 1 4a b Receiver Block and Level Diagrams Assembly drawings and schematics for the complete receiver systems and for their modules are located in Section 7 Preselector Preamplifier 950 MHz PCL6020 6030 The Preselector Preamplifier is located in the RF module The antenna input signal is first passed through the preselector filter which is a pcb mounted helical bandpass filter with very low insertion loss The output of the preselector filter is fed to the preamplifier providin
153. he transmitter with a red light in the upper left corner RMT The displayed channel number represents the actual channel the transmitter is operating in The SELECT knob will have no effect on the transmitter in this mode But the position of the SELECT knob retains its memory Changing the knob position will change the channel that the transmitter will return to if the REMOTE ENABLE is disabled 3 2 3 3 Front Panel Control LOCKOUT Operation To prevent unauthorized or accidental changing of the channel via the SELECT knob the front panel can be locked out by programming the 5 position INTERNAL REMOTE dip switch SW6 on the Channel Control board This switch emulates the remote control function internally and the unit will appear to be in remote control operation Switching out the INT RMT ENABLE S6 will return the transmitter to front panel control 3 3 Receiver Operational Controls 3 34 Receiver Front Panel The operation of the receiver front panel controls is very similar to the transmitter controls Figures 3 5 3 6 and 3 7 show the PCL6020 PCL6030 and PCL6060 receiver front panels standard The meter functions and scales are described in Table 3 2 below The top scale is calibrated in dB followed by a four decade logarithmic scale below which is a 0 to 25 linear scale On the bottom is a center arc for relative indications The meter is an absolute value peak reading type with fast ballistics since the purpose of the m
154. hematic p 3 of 3 Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 7 71 20B3023 Rev D Transmitter Audio Power Supply Assembly Moseley PCL 6000 Document No 602 13375 01 Rev B Schematic and Assembly Drawings 7 72 A WALI A LN GL AN A SH Sms S as Sag A JOLVTIISO ex oc d ER 20N 343934 gt AC 40193130 8c Szd vcd 89d NOLdVOV Td in o asl dO01 II LU 614 914 CH CH d9 600 10227 01 REV H Transmitter RF Module Schematic p 1 of 4 Document No 602 13375 01 Rev B Moseley PCL 6000 Moseley PCL6000 7 73 TP2 TP4 REFERENCE D 600 10227 01
155. hms selectable mux input level is 1 5 Vp p 75 us pre emphasis is selectable The board is jumper programmable for composite mono or digital input operation and level adjustments are provided for all functions Summing amplifiers combine the inputs into a single baseband signal that is passed on to the FMO Synthesizer in the RF module FMO Synthesizer The baseband signal from the Audio Processor modulates the frequency modulated oscillator FMO in the RF module The FMO consists of a 60 80 MHz ultralinear very low noise VCO which is phase locked to a crystal controlled reference oscillator The phase lock loop contains the frequency programming switches which allow the synthesizer to be changed in frequency steps of 25 kHz The RF output of the FMO is filtered to attenuate any harmonics With 10096 modulation the RF signal will deviate 50 kHz composite or 40 kHz monaural from the carrier The output power of the FMO is approximately 1 mW Moseley PCL 6000 Document No 602 13375 01 Rev B 1 6 System Characteristics 1st Local Oscillator 950 MHz The 1st Local Oscillator LO1 section of the RF module consists of an oven controlled crystal oscillator a doubler and a step recovery diode SRD multiplier The oscillator operates at 102 MHz nominal The resultant multiplication factor of the LO is X10 The output 1020 MHz is filtered and attenuated before being applied to the upconverter mixer A level detector provides front
156. hooting 1 When aligning systems as a dual or redundant installation one transmitter should be used as a reference In this case the second transmitter would be aligned using the first receiver as a reference The second receiver would be aligned using the first transmitter as a reference As a final verification the second transmitter would be checked using the second receiver Using any combination of transmitter and receiver the composite band should be flat within 0 1 dB The results from the MUX band measurements should be within 10 2 The MUX output is lowest when the carrier center frequency of the transmitter and receiver are identical 5 3 5 Ultimate Signal to Noise Ratio Description The STL ultimate wideband 50 Hz to 15 kHz SNR is verified using a distortion analyzer The receiver SNR quieting is verified during the receiver sensitivity test see Section 5 3 2 Procedure 1 Connect the equipment as shown in Figure 5 7 and set the controls on the distortion measurement test set as follows Meter Function REF Level Meter Input 10 dBm Frequency 400 Hz 2 Set the controls on the transmitter as follows OPERATE STANDBY OPERATE Radiate LED green METER FUNCTION PGMLVL Using the METER FUNCTION switch on the receiver select the PGM LVL position Adjust the oscillator output level on the distortion measurement test set for a reading of 0 dB on the top scale of the transmitter meter Rotate the REFERENCE ADJUST on the
157. i Moseley PCL 6000 910 08796 01 Rev B PCL 6030 Multichannel Option Document No 602 13375 01 Rev B
158. ic gain block with a gain of 20 dB NF 2 8 dB Mixer HY1 performs the first down conversion to the 60 80 MHz IF 4 3 2 9 Preselector Preamplifier 1st Mixer 1 7 GHz The receiver RF input passes through an external five pole interdigital coupled resonator filter to protect the succeeding low noise preamp from high level carriers and provide the front end selectivity characteristic BW 20 MHz The preamp AR2 is a monolithic gain block with a gain of 14 dB NF 2 8 dB Mixer HY1 performs the first down conversion to the 60 80 MHz IF 4 3 2 10 1st IF Amplifier PCL6020 6030 The IF output of the mixer HY1 is terminated with a constant impedance diplexer network C108 L18 R79 C109 L19 and wideband amplifier AR3 that has a high intercept point to prevent interference intermodulation The 1st IF amp also buffers the mixer output and provides gain to overcome conversion losses Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 4 17 4 3 3 Preamp 1st Mixer 950 MHz PCL6060 The Preamp 1st Mixer module has been designed to provide optimum service in the most hostile RF environments The active attenuator low noise preamplifier 1st mixer and 1st IF amplifier are integrated in this module The input signal is applied to a PIN diode attenuator normally set to minimum loss 0 5 dB By adjusting the diode bias via R13 RF ATTEN ADJ the attenuator can be set to approximately 15 dB to prevent preamp overload in
159. ignal and possibly interference to other users in the STL band The secondary program audio is generally passed through an AGC stage and or a freguency conscious limiter into a subcarrier generator with a center freguency of 185 kHz 67 kHz for mono The subcarrier for the secondary program audio is fed to the PCL6000 MUX 2 subcarrier input with an unbalanced shielded cable RG 58 A U typical with BNC connectors An input level of 1 5 Vp p corresponds to a main carrier deviation of 7 5 kHz 6 kHz mono by the MUX 2 subcarrier Where a control subcarrier is desired a subcarrier freguency of 110 kHz 26 kHz for mono is typically used The modulated subcarrier may be generated internally in the remote control eguipment as in the case of the Moseley MRC series In any case the control subcarrier is applied to the MUX 1 input on the PCL6010 transmitter at 1 5 Vp p using BNC connectors on coaxial cable RG 58 A U typical This signal will produce a main carrier deviation of 5 kHz 4 kHz mono by the MUX 1 subcarrier The composite and multiplex inputs into the PCL6010 transmitter are wideband inputs It is assumed that the eguipment supplying signals to be fed into the transmitter contain the band limiting filters necessary to limit the signals to the spectrum for the intended use i e 53 kHz for stereo composite 110 kHz for control subcarrier 26 kHz 3 mono and 185 kHz 67 kHz 1 10 mono for secondary program audio If the external equip
160. igned before proceeding see Section 5 3 10 b IPA The IPA Level should be greater than 1 VDC If not the following steps should be taken Verify that the 12 VDC is between 12 25 and 12 75 VDC Using the power meter verify that the input to the IPA amplifier is at least 10 dBm If it is the problem is located in the IPA amplifier Measure the output of the 1st LO and module for a value of between 5 and 10 dBm Using the power meter measure the output of the FMO for a value of 2 2 dBm Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 5 35 5 4 Module Adjustments Information This section provides additional technical information to assist during alignment troubleshooting and module replacement Included are adjustment instructions to be used during troubleshooting module repair or module replacement for the following modules 5 4 1 Transmitter Audio power Supply 5 4 2 Transmitter RF Module 5 4 3 Doubler assembly 1 7GHz 5 4 5 RF Amplifier 5 4 5 Receiver Audio Power supply 5 4 6 Receiver RF Module 5 4 7 IF Demod PCL6020 5 4 8 Double Converter LO3 PCL6030 6060 5 4 9 Preamp 1 Mixer 950 MGz PCL6060 5 4 10 FM Demod PCL6030 6060 5 4 11 Adjacent Channel Filter PCL6060 5 4 12 Channel Control Board Multichannel Option 5 4 4 Transmitter Audio Power Supply AUDIO PROCESSOR COMP PGM LVL R28 Composite program level adjustment Sets the transmitter deviation of the composite sig
161. igure 5 12 Troubleshooting 1 The stereo generator s performance can be verified by connecting output to the input of the audio spectrum analyzer and performing the tests specified in step 5 above 2 If the STL link is identified as the source of excessive stereo crosstalk the following steps should be taken a Verify that the cover is on the RF amplifier and install the covers on the transmitter and receiver using at least two screws b Ensure that the transmitter and receiver are more than 2 feet apart C Verify that distortion meets specification using the procedure shown in paragraph 5 3 6 Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 5 23 laisa 10 SEE ESE E ei s EE KO TA WL LA MD1260A BMPJ Figure 5 12a Nonlinear Crosstalk Main to Sub VAL ME A I IN ICL u ee MD1261A BMP Figure 5 12b Nonlinear Crosstalk Sub to Main VERT 10 dB div HOR 5 kHz div A 15 kHz L R ref level B 2nd harmonic distortion level at 30 kHz Nonlinear crosstalk main to sub the difference in dB between level A and level B 60 dB in this example VERT 10 dB div HOR 5 kHz div C and Cu lower and upper L R sideband level at 30 5 kHz and 45 5 kHz D intermodulation product at 15 kHz E linear vector crosstalk at 7 5 kHz this signal is a product of the stereo generator Nonlinear crosstalk sub to main the difference in dB between level C or Cy an
162. il 72 PGM Lv COMP PGM LVI TP11 19 20 p 2 19 KI 1 0 PANEL MUX OUT 600 10710 01 Rev B MONG FOR NOTES OF 4 0 0 0 0 0 Gi EE PAGE 1 Document No 602 13375 01 Rev B Moseley PCL6000 7 19 MI Te p 3 MONO PG MONO BASEBAND TER INPUT FI SEE PAGE 1 OF 4 FOR NOTES 600 10710 01 Rev B Receiver Audio Power Supply Schematic p 4 of 4 Moseley PCL 6000 Document No 602 13375 01 Rev B 7 20 Schematic and Assembly Drawings 20B3024 Rev C Receiver Audio Power Supply Assembly Moseley PCL 6000 Document No 602 13375 01 Rev B 7 21 Moseley PCL6000 c TONINOI
163. in to Sub 5 23 Figure 5 13 Test Setup for FMO Adjustment AAA 5 32 Figure 5 14 50 Hz Hiigh Pass Filler uu irrita tt treat ENKE nne n ka 5 46 Figure 5 15 75 us De Emphasis with 30 Hz High Pass Filter 5 46 Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 List of Tables Table 2 1 Transmitter and Receiver Fuse Settings eure 2 2 Table 2 2 Transmitter and Receiver Standard DC Fuse Values sse 2 3 Table 2 3 Remote Connector Wiring Guide 2 14 Table 2 4 Channel Control Remote Interface Logic 2 22 Table 3 1 Transmitter Meter Functions and Scales 3 2 Table 3 2 Receiver Meter Functions and Scales 3 6 Table 4 1 Transmitter Channel 0 Programming seem 4 11 Table 4 2 Receiver Channel 0 Programming ENNEN 4 20 Table 5 1 Recommended Test Equipment seen eee 5 1 Table 5 2 Frequency Selection Chart 950 MHz band 5 24 Table 5 3 Synthesizer Frequency Selection Switch Settings A 5 31 Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 Glossary AFC Automatic Freguency Control AM Amplitude Modulation AGC Automatic Gain Control BB Baseband BCD Binary Coded Decimal BPF Band Pass Filter BW Bandwidth Comp Composite
164. ine Filter Fuse Holder Programming Detail shows 100 VAC operation SE Figure 2 2 Typical Bench Test Setup naene 2 4 Figure 2 3 Typical PCL6000 Site Installation a 2 8 Figure 2 4 Transmitter PGM and MUX Interconnect Composite 2 9 Figure 2 5 Transmitter PGM and MUX Interconnect Mono sssssssssssssessssrreresssrrrrrrrnrse 2 11 Figure 2 6 Receiver PGM and MUX Interconnect Composite 2 12 Figure 2 7 Receiver PGM and MUX Interconnect Mono a 2 13 Figure 2 8 Main Standby Transmitter Interconnect Composite 2 15 Figure 2 9 Main Standby Transmitter Interconnect Momo 2 16 Figure 2 10 Main Standby Receiver Interconnect Other STL Receivers 2 17 Figure 2 11 Main Standby Receiver Interconnect PCL6000 Composite 2 18 Figure 2 12 Main Standby Receiver Interconnect PCL6000 Mono 2 19 Figure 2 13 Transmitter I O Remote Connector Pin Out Rev A 2 20 Figure 2 14 Transmitter I O Remote Connector Pin Out Rev B or Later 2 20 Figure 2 15 Transmitter Channel Control Connector Pin Out a 2 21 Figure 3 1 PCL6010 Transmitter Front Panel Standard ei 3 1 Figure 3 2 PCL6010 Transmitter Rear Panel ertet
165. ing Detectors CR1 and CR2 provide DC meter samples for reflected and forward power respectively These sample voltages are fed to the Audio Power Supply board The forward and reflected power sample is conditioned and fed to the meter for monitoring Forward power voltage level at C721 is approximately 2 5 VDC for the nominal 10 watts output Reflected power voltage level at C722 is approximately 2 5 VDC for the 10096 reflected power The RFA supply bridge diode CR101 and regulator Q101 are mounted to the heat sink of the RFA 4 2 3 2 RF Amplifier 450 MHz The RF Amplifier module is a three stage power amplifier designed to produce 10 watts nominal output power over the 440 470 MHz band when driven with a 20 dBm nominal input signal The heart of the module is a high gain UHF power amplifier hybrid device AR1 that exhibits excellent stability and ruggedness AR1 provides 20 dB of gain and the power output is factory set in the transmitter for 10 watts by adjustment of the 12 5 VDC supply on the Audio Power Supply board Field adjustment of the power supply is not recommended since other design considerations will be compromised i e DC power consumption temperature stability efficiency etc CAUTION Power must be limited to 23 dBm 200 mW or permanent damage to the module may result The PA current sample is derived across R2 plus any additional line losses to provide 0 18 volt amp sensitivity at the RFA input t
166. ion 148 174 MHz 215 240 MHz 300 330 MHz 440 470 MHz 890 960 MHz 1 5 1 7 GHz 100 500 kHz 500 kHz standard 0 2 dB or better 30 Hz 53 kHz 0 3 dB or better 30 kHz 75 kHz 0 2 or less 30 Hz 7 5kHz typically better than 0 15 at 1 kHz Convolved stereo demodulation products greater than 50 dB below the 100 modulation reference level 400 Hz from 7 5 kHz 15 kHz 0 196 or less 30 Hz 7 5 kHz typically better than 0 196 at 1 kHz Convolved stereo demodulation products greater than 50 dB below the 10096 modulation reference level 400 Hz from 7 5 kHz 15 kHz 50 dB or better 50 Hz 15 kHz typically 55 dB or better 51 dB or better 50 Hz 15 kHz typically 55 dB or better 50 dB or better Sub to Main Channel 51 dB or better Main to Sub Channel 72 dB or better typically 75 dB Demodulated de emphasized left or right Referenced to 10096 modulation 75 dB or better typically 77 dB Demodulated de emphasized left or right Referenced to 10096 modulation 500F9 Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 1 3 1 3 2 PCL6020 PCL6030 PCL6060 Monaural System Freguency Range Freguency Response Distortion THD and IMD PCL6020 PCL6030 6060 Signal to Noise Ratio PCL6020 PCL6030 6060 Operating Temperature Emission 148 174 MHz 215 240 MHz 300 330 MHz 440 470 MHz 890 960 MHz 1 5 1 7 GHz 0 3 dB or better 30 Hz 15
167. iste vii ntt eene res 3 3 Figure 3 3 PCL6010 Transmitter Rear Panel DC Option 3 3 Figure 3 4 PCL6010 Transmitter Front Panel Multichannel Option 3 3 Figure 3 5 PCL6020 Receiver Front Panel Standard ei 3 5 Figure 3 6 PCL6030 Receiver Front Panel Standard ieee 3 5 Figure 3 7 PCL6060 Receiver Front Panel Standard ieee 3 5 Figure 3 8 Typical SNR Curves u 3 7 Figure 3 9 PCL6000 Receiver Rear Panel 3 7 Figure 3 10 PCL6000 Receiver Rear Panel DC Option 3 8 Figure 3 11 PCL6020 Receiver Front Panel Multichannel Option 3 8 Figure 5 1 Test Setup for Frequency Alignment a 5 4 Figure 5 2 Sensitivity Test Setup ANE 5 5 Figure 5 3 Selectivity Test Setup ANE 5 7 Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 Figure 5 4 Test Setup For Deviation Alignment AAA 5 9 Figure 5 5a Bessel Null Function Weawveform eeepc tnnt enti teas E 5 10 Figure 5 6 Test Setup for MUX Channel Alignment A 5 12 Figure 5 7 Test Setup For Signal To Noise Ratio Measurement 5 14 Figure 5 8 Test Setup for Distortion Alignment u 5 15 Figure 5 9 Stereo Separation Test Getup ee ceeceeeseeeeeeeeeneeeeeseeeeeeeteeeeesenaeeeesneeeeeeeas 5 17 Figure 5 10 Swept Separation Waveform a 5 19 Figure 5 11 Stereo Crosstalk Setup lt 5 21 Figure 5 12a Nonlinear Crosstalk Ma
168. kHz 0 2 or less 30 Hz 15 kHz typically better than 0 15 at 1 kHz 0 1 or less 30 Hz 15 kHz typically better than 0 1096 at 1 kHz 72 dB or better typically 75 dB Referenced to 10096 modulation 75 dB or better typically 77 dB Referenced to 10096 modulation 20 C to 70 C 110F3 no subcarrier 110F9 with 26 kHz control subcarrier 230F9 with 67 kHz program subcarrier 1 3 3 PCL6010 Transmitter Specifications Type RF Power Output 800 960 MHz 148 470 MHz 1 5 1 7 GHz RF Output Connector Deviation 100 Modulation Composite Monaural Frequency Stability Spurious amp Harmonic Emission Modulation Capability Modulation Inputs Composite Solid state Direct FM Frequency synthesized Crystal referenced 6 watts 8 watts 5 watts Type N Female 50 ohm 50 kHz 40 kHz Better than 0 00025 2 5 ppm from 0 C to 50 C More than 60 dB below carrier level One program and two subcarrier channels 3 5 Vp 6 Kilohms unbalanced Frequency range 30 Hz 80 kHz 1 BNC connector Moseley PCL 6000 Document No 602 13375 01 Rev B System Characteristics Monaural MUX 1 MUX 2 Power AC Dimensions Shipping Weight 10 dBm 600 ohms balanced floating Frequency range 30 Hz 15 kHz Barrier strip connector 1 5 Vp p 9 4 Kilohms unbalanced Freguency range 85 200 kHz 1 BNC connector 1 5 Vp p 4 Kilohms unbalanced
169. le scale 3 While monitoring the center scale of the receiver meter switch the OUTPUT LVL ADJ on the signal generator from 40 to 110 and verify that the signal strength reads within the meter range for each setting If it does not proceed to Section 5 4 10 FM Demod PCL6030 6060 Log Gain Adjust prior to continuing the test and perform the calibration adjustments given there The PCL6020 system log gain is not adjustable 4 Using the METER FUNCTION switch on the receiver select the PGM LVL position Set FM Deviation on the RF Signal generator to ON Set the modulation frequency on the signal generator to 400 Hz Adjust the deviation control on the signal generator so that the meter on the receiver reads 0 dB on the top scale Verify that the deviation on the signal generator reads 50 1 kHz 5 Setthe controls on the distortion measurement equipment for a 0 dB reference Set the FM Deviation on the RF signal generator to OFF Position the controls on the distortion measurement equipment for a reading of 60 dB SNR Reduce the RF LVL adjustment on the RF signal generator until the distortion measurement equipment reads 60 dB Observe the RF level output of the signal generator it should indicate less than 20 uV 6 Setthe controls on the distortion measurement equipment for a signal to noise ratio of 40 dB Reduce the RF level on the signal generator until the mute threshold LED on the IF Demod PCL6020 or FM Demod PCL603
170. learn on critical equipment Remove the solder from the component leads and the printed circuit pads Solder wicking braid or a vacuum de solderer are useful for this Gently loosen the component leads and extract the component from the board Form the leads of the replacement component to fit easily into the circuit board pattern Solder each lead of the component to the bottom side of the board using a good brand of rosin core solder We recommend not using water soluble flux particularly in RF portions of the circuit The solder should flow through the hole and form a fillet on both sides Fillets should be smooth and shiny but do not overheat the component trying to obtain this result Trim the leads of the replacement component close to the solder on the pad side of the printed circuit board with a pair of diagonal cutters Completely remove all residual flux with a cotton swab moistened with flux cleaner For long term quality inspect each solder joint top side and bottom under a magnifier and rework solder joints to meet industry standards Inspect the nearby components soldered by the Moseley Associates production line for an example of high reliability soldering Moseley PCL 6000 Document No 602 13375 01 Rev B 6 4 Customer Service Blank Page Required to Preserve Pagination Moseley Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 7 1 7 Schematics and Assembly Drawings
171. ley PCL 6000 Document No 602 13375 01 Rev B 7 86 Schematic and Assembly Drawings COMP LF TILT CTO 20B3024 Rev C Receiver Audio Power Supply Assembly Moseley PCL 6000 Document No 602 13375 01 Rev B 7 87 Moseley PCL6000 31219248 35 ON 3 ILVa dO TANK MEHLO SSZINN S310N 3973431 TINNYHIILT SL a N Scd vzd Gd OlddV Tid OL S39V3HHIN 8c 2 A 7 NI JAIGI u 1v9S Hg Gd 614 39N383338 SdO1V Document No 602 13375 01 Rev B 600 10228 01 Rev K Receiver RF Module Schematic p 1 of 4 Moseley PCL 6000 7 88 Schematic and Assembly Drawings e e gt 4 gt x bp K KO E 2 BIN VAN VN VN Ke d x gt ER s 600 10228 01 Rev K Receiver RF Module Schematic p 2 of 4 Moseley PCL 600
172. lied to the transmitter RF module 4 2 2 Transmitter RF Module 4 2 2 1 FMO Synthesizer The FMO Synthesizer consists of three main subgroups the RF group the digital group and the loop filter The RF group includes the freguency modulated oscillator FMO buffer reference oscillator and low pass filter The digital group includes a dual modulus prescaler and an integrated PLL IC that provides multiple functions to be described later These three groups provide an RF signal source that has good short term stability low noise and is tunable over a wide freguency range Selecting the appropriate divide ratio synthesizes the crystal controlled reference oscillator and ensures long term stability The FMO consists of low noise field effect transistor Q4 in an RF grounded base configuration The drain of Q4 is connected to the resonant circuit inductor and capacitors The capacitance for this circuit is provided by C35 C40 and C41 as well as the three switching networks that control the capacitors C26 C30 and C34 The inductance consists of a stripline inductor on the PC board Feedback to cause oscillation is from the drain to the source consisting of C40 and C41 The normal freguency range of the oscillator is 60 to 80 MHz If the Multichannel option is being utilized in the system the modulation signal enters the RF module at J11 25 from the programmed compensation circuit located on the Channel Control board The modulation gain varies
173. lter sockets The cover should then be replaced PCL6030 6060 Remove the appropriate ceramic filters FL1 and FL4 Monaural FL2 and FL5 Wideband Composite or FL3 and FL5 Narrowband Composite from the Double Converter LO3 module and replace it with a 1 0 K ohm resistor The resistor leads should first be cut between 0 3 and 0 4 inch from the body The ends of the resistor leads should then be flattened using a pair of needle nose pliers so they can be inserted in the filter sockets The cover should then be replaced b Using the distortion measurement test set the distortion reading should now be less than 0 27 at 15 kHz If it is not additional troubleshooting will be required prior to determining the performance of the 10 7 MHz IF filters An RF input to the receiver exceeding 6 mV may cause an indication of high distortion The distortion of the Audio Power Supply board in the receiver can be tested independently by applying the output of the distortion analyzer s audio oscillator to the baseband input of the Audio Power Supply board Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 5 17 5 3 7 Stereo Separation and Stereo Signal to Noise Ratio Description The stereo separation alignment is accomplished using a stereo generator and demodulator of known quality and an audio spectrum analyzer with tracking generator Figure 5 9 Stereo Separation Test Setup Procedure 1 Connect the eguipment as shown in Fi
174. ltralinear very low noise VCO which is phase locked to a crystal controlled reference oscillator The phase lock loop contains the frequency programming switches which allow the synthesizer to be changed in frequency steps of 25 kHz The RF output of LO2 is filtered to attenuate any harmonics The output level is approximately 7 dBm Double Converter LO3 PCL6030 6060 The Double Converter LO3 module provides the second and third down conversions of the IF signal and establishes the selectivity characteristics of the receiver The second IF is at 10 7 MHz and two phase linear ceramic filters are used to provide system selectivity composite or monaural The second of these two filters is switch selectable to allow the user to minimize distortion in those situations where the added selectivity is not necessary The 3rd Local Oscillator LO3 is located in the Double Converter LO3 module and is used for the third down conversion to 3 MHz LO3 is a crystal oscillator operating at 13 7 MHz The output level is 7 dBm FM Demod PCL6030 6060 The FM Demod module has three major functions One is to extract the baseband information from the FM carrier The second function is to generate the RF signal strength voltage that is applied to the meter in the RF LEVEL position and the third is to establish the mute or squelch threshold of the receiver The signal is first passed through a 3 MHz IF amplifier and a phase linear 3 MHz bandpass filter At this
175. lues of switches S1 S2 S3 and S4 1 The output frequency is determined by adding the resultant frequency values set by each switch S4 1 is a Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 4 5 one bit switch that sets 64 MHz S1 S2 and S3 are four bit switches set to a hex value 0 1 2 3 4 5 6 7 8 9 A B C D E F where A F corresponds to 10 15 The transmitter frequency example below illustrates the math Transmitter frequency example lst LO 1020 000 MHz Carrier Freq 950 500 FMO Freq 70 500 MHz SWITCH SETTINGS S4 1 1 X 64 64 000 MHz S1 1 x 4 4 000 S2 A x 25 2 500 S3 0 X 025 0 000 70 500 MHz Note See section 5 3 9 for changing the STL frequency in the field 4 2 2 2 1st Local Oscillator 950 MHz 1 7 GHz The 1st LO signal is derived from crystal controlled oscillator Q5 The fifth overtone crystal Y1 102 000 MHz for 950 MHz 92 MHz for 1 7 GHz is temperature stabilized by a 65 C proportionally controlled oven HR1 Oscillator buffers Q6 and AR1 isolate the oscillator and amplify the signal preventing frequency pulling when adjusting the multipliers The output of the buffer is doubled in an active push push doubler The single ended input from the buffer is split into two out of phase voltages in T1 and applied to the bases of Q7 and Q8 The output of these two transistors is summed at their collectors The output of the doubler is tuned by C94 and L14 and is impedanc
176. m the log amplifier is also sent to comparator U2 which compares this level to a preset reference voltage established by MUTE THRESHOLD ADJUST R22 Decreasing this reference voltage decreases the signal strength required to initiate the mute condition Whenever the logic circuitry is in the mute condition MUTE threshold indicator CR6 will glow red A 2 dB hysteresis is built into the mute logic to eliminate chattering near the mute threshold Also network CR3 CR4 R16 R17 and C10 provide a fast attack slow release 1 ms and 1 5 seconds respectively to and from the mute mode to eliminate thumps The mute signal is brought out on J1 10 and J1 11 4 3 7 Adjacent Channel Filter PCL6060 The Adjacent Channel Filter is an elliptical low pass baseband filter that attenuates any high frequency signals that could be demodulated by the FM Demod due to adjacent channel interference These signals can cause slew rate limiting in successive baseband processing circuits The filter module is jumper programmable E1 and E2 for composite or mono operation Moseley PCL 6000 Document No 602 13375 01 Rev B 4 20 Module Characteristics 4 3 8 Channel Control Board Multichannel Option The Channel Control Board is used to control the RF module freguency selection provide front panel display and implement the remote control facilities for channel selection The transmitter version indicated by 1 provides gain compensation for the FMO
177. ment generates any spurious signals these signals will be accepted by the transmitter and passed to the receiver Any spurious signals may cause intermodulation among the composite and subcarrier information and may increase the occupied bandwidth to the extent that interference will be experienced by neighboring users in the STL band Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 2 11 Figure 2 5 shows the connections for a mono setup The same cautions and considerations apply as for composite The mono input has a selectable low pass filter for bandwidth limiting i I i i i Figure 2 5 Transmitter PGM and MUX Interconnect Mono Moseley PCL 6000 Document No 602 13375 01 Rev B 2 12 Installation 2 8 Program and Multiplex Installation Receiver At the outputs of the PCL6000 receivers the baseband output of the IF demod is split and filtered into two bands The audio outputs are from 30 Hz to approximately 85 kHz 15 kHz mono The multiplex outputs are bandpass filtered to pass the frequency range of 100 kHz to 200 kHz 22 kHz to 85 kHz mono Figures 2 6 and 2 7 depict a typical interconnection of a PCL6000 receiver at the remote transmitter site The unbalanced output 3 5 Vp p composite 10 dBm mono is interconnected to the wideband input of the transmitter with coaxial cable RG 58 A U typical with BNC connectors or twisted shielded pair for mono i Figure 2 6 Receiver PGM and MUX Interco
178. modulation sensitivity variation with freguency change Mux IC U4 selects either the front panel channel select switch S1 or the CHANNEL REMOTE INPUT P1 1 2 3 4 providing a BCD output to the address lines of the EPROMs U1 U2 U3 for channels 0 15 The remote input is toggled active by the REM ENABLE line P1 5 which also controls the RMT LED on the display DP upper left Board mounted INTERNAL MODE switch S6 emulates the remote input function for internal security lockout of the front panel channel selection Logic IC U5 decodes and detects channel address number 0 to toggle between EPROM control PROM ENABLE and on board manual programming control CHNL 0 ENABLE via switches S2 53 54 and S5 The EPROM outputs PROM PROGRAM are buffered by bus drivers U7 U8 U9 The switch outputs are buffered by bus drivers U10 U11 U12 The driver outputs are parallel connected PROGRAM OUTPUT BUS and enable bank switching of the outputs When channel number 0 is selected the switches take control and the RF module may be programmed for a user specified freguency The programming bits are assigned as shown in Table 4 2 Table 4 2 Receiver Channel 0 Programming amer Assignment comments 64 MHz 32 MHz 16 MHz 8 MHz 4 MHz 2 MHz 1 MHz 500 kHz 250 kHz 200 kHz 100 kHz 50 kHz 200 kHz FIX CAP ACTIVE RF Module Circuit F2 CAP ACTIVE RF Module Circuit F1 CAP ACTIVE RF Module Circuit Moseley PCL
179. n alternately discharged through Q11 and Q12 the total current being proportional to the signal frequency Q11 and Q12 serve as current to voltage converters whose outputs are combined and integrated in a 500 kHz low pass filter L4 and L5 and associated circuitry The output from this filter contains the baseband information A two stage low noise amplifier U5 and U1 then amplifies the baseband signal to a useful system level Jumper E1 sets the baseband gain to compensate for the differences in wideband and narrowband transmitter deviation Baseband Level Adjust R10 is set to deliver a 3 5 Vp p signal at J2 for an FM signal with 50 kHz 35 kHz in narrowband mode deviation This FM detector is inherently wideband linear and adjustment free 4 3 6 2 RF Signal Strength Detector The RF signal from U4 is also sent to a four stage successive limiting differential amplifier Q2 Q9 through a simple bandpass filter L3 and C42 Each stage of this amplifier drives an amplitude detector CR7 CR10 which in conjunction with the summing amplifier U3 produces a DC metering signal at J1 9 that is proportional to the logarithm of the RF input level over three decades of amplitude This voltage is used to indicate RF signal strength over the range of 3 3000 uV on the front panel meter LOG GAIN control R67 is used to establish the linearity of the signal sent to the Metering and Status module 4 3 6 3 Mute Logic The RF signal strength voltage fro
180. n the barrier strip on the rear of the receivers a H K x Figure 2 12 Main Standby Receiver Interconnect PCL6000 Mono Moseley PCL 6000 Document No 602 13375 01 Rev B 2 20 Installation 2 10 Remote Control of the STL Transmitter The PCL6010 transmitter has been designed to be operated by remote control Radiate standby control capability as well as metering outputs for power and AFC are built in Figure 2 13 shows the back panel I O connector schematic that is reguired for remote control interface with the transmitter Figure 2 13a is the pin out for revision A transmitters using the circular 9 pin connector Figure 2 13b is the pin out for revision B and later transmitters using the 9 pin D female connector Figure 2 13a Transmitter UO Remote Connector Pin Out Rev A TX RMT 2 RMT FWD PWR 1 3 RMT MODE 4 RMT RADIATE CTL 6 RMT FWD PWR 2 7 GND 8 RMT AFC LVL mc RMT RADIATE OVERIDE MD1113 Figure 2 13b Transmitter UO Remote Connector Pin Out Rev B or Later Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 2 21 2 11 Multichannel Remote Interconnect Option The PCL6000MC Multichannel is equipped with a CHANNEL CONTROL connector located on the back panel of both transmitter and receiver The 9 pin D male connector pin out is shown in Figure 2 14 Figure 2 14 Tra
181. nal Normal input is 3 5 Vp p The normal deviation of the transmitter is 50 kHz MONO PGM LVL R199 Monaural program level adjustment Sets the transmitter deviation of the mono signal Normal input is 10 dBm The normal deviation of the transmitter is 40 kHz DIG PGM LVL R200 Digital modulation program level adjustment Sets the transmitter deviation of the digital signal in DSP6000 applications Consult the DSP6000 manual for further information MUX1 LVL R29 MUX ch 1 level adjustment Sets the transmitter deviation for the MUX ch 1 deviation The normal input is 1 5 Vp p at 110 kHz Main carrier deviation normally is 5 kHz MUX2 LVL R40 MUX ch 2 level adjustment Sets the transmitter deviation for the MUX ch 2 input The normal input is 1 5 Vp p at 185kHz Main carrier deviation normally is 7 5 kHz PHASE SELECT E2 Jumper used to select the phase of the modulation Position A is in phase and position B is 180 degrees out of phase Moseley PCL 6000 Document No 602 13375 01 Rev B 5 36 Alignment MONO LVL SELECT E6 75 us PRE EMPHASIS E5 F1 R77 F2 R78 15 kHz LPF E4 FA R76 FB R75 FC R49 LF TILT R47 LPF GAIN R45 MONO COMP SELECT E3 METERING COMP PGM MTRG R201 MONO PGM MTRG R202 DIG PGM MTRG R203 REFL PWR R161 FWD PWR R162 PA CURR R163 IPA LVL R164 AFC LVL R165 LO1 R166 MUX R159 5V R157 12V R155 15V R151 15V R153 METER B
182. nd from the purchaser s installation and subsistence shall be paid by purchaser to Moseley Associates Inc 2 In case of any equipment thought to be defective the purchaser shall promptly notify Moseley Associates Inc in writing giving full particulars as to the defects Upon receipt of such notice Moseley Associates Inc will give instructions respecting the shipment of the equipment or such other manner as it elects to service this Warranty as above provided 3i This Warranty extends only to the original purchaser and is not assignable or transferable does not extend to any shipment which has been subjected to abuse misuse physical damage alteration operation under improper conditions or improper installation use or maintenance and does not extend to equipment or parts not manufactured by Moseley Associates Inc and such equipment and parts are subject to only adjustments as are available from the manufacturer thereof 4 NO OTHER WARRANTIES EXPRESS OR IMPLIED SHALL BE APPLICABLE TO ANY EQUIPMENT SOLD BY MOSELEY ASSOCIATES INC AND NO REPRESENTATIVE OR OTHER PERSON IS AUTHORIZED BY MOSELEY ASSOCIATES INC TO ASSUME FOR IT ANY LIABILITY OR OBLIGATION WITH RESPECT TO THE CONDITION OR PERFORMANCE OF ANY EQUIPMENT SOLD BY IT EXCEPT AS PROVIDED IN THIS WARRANTY THIS WARRANTY PROVIDES FOR THE SOLE RIGHT AND REMEDY OF THE PURCHASER AND MOSELEY ASSOCIATES INC SHALL IN NO EVENT HAVE ANY LIABILITY FOR CONSEQUENTIAL DAMAGES OR FOR L
183. nel Continued operation in a confined environment can cause the ambient temperature to exceed specification resulting in reduced life or catastrophic failure When a PCL6000 Receiver is used with a PCL606 PCL600 PCL505 or PCL303 receiver a transfer panel such as a TPR 2 must be used to accomplish automatic switchover and should be mounted between the two receivers Receiver automatic switchover interconnections are detailed in Section 2 9 Main Standby Interconnect Moseley PCL 6000 Document No 602 13375 01 Rev B 2 6 Installation When two transmitters are in a system at a site an automatic transfer panel such as the TPT 2 should be mounted between them The TPT 2 will allow interconnection of a PCL6000 with another PCL6000 PCL600 PCL606 PCL505 or PCL303 transmitter and can provide automatic switchover in the event of a detectable failure in the transmitter as shown in Section 2 9 1 Transmitter Interconnect 2 5 Antenna Installation The installation of the antennas and associated feed lines determines to a large extent the long term reliable operation of the STL Experience has indicated that a reasonably clear path having a 0 6 Fresnel zone clearance along with good feed line installation results in a highly predictable signal level at the receiver The appendix contains a series of instructions calculation sheets typical gain and loss characteristics and nomographs to enable the received signal level to be predicted Sin
184. nnect Composite Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 2 13 a i i i i b t Figure 2 7 Receiver PGM and MUX Interconnect Mono The secondary program audio on the STL 185 kHz subcarrier is fed to the subcarrier demodulator The baseband audio is passed to a subcarrier generator at 67 kHz the normal SCA program carrier which in turn is fed to the main transmitter multiplex input The multiplex outputs may also be fed to the control subcarrier demodulator for use by the control system Some control systems such as the Moseley MRC series have their own internal subcarrier demodulation capability and an external demodulator is not reguired Note that since both multiplex outputs contain the same 85 kHz to 200 kHz 20 kHz to 85 kHz mono spectrum the subcarrier demodulators are reguired to further filter the spectrum as reguired for their individual purposes 2 9 Main Standby Interconnect The PCL6000 transmitter and receiver can be interfaced with other PCL6000 PCL606 PCL505 or PCL303 systems to form a redundant backup system that provides for automatic changeover between eguipment in the event a detectable failure occurs The Moseley model TPT 2 is used to accomplish automatic switchover for transmitters in all combinations The model TPR 2 Transfer Panel Receiver is reguired on certain receiver combinations Moseley PCL 6000 Document No 602 13375 01 Rev B 2 14 Installation 2 9 1 T
185. nnect PCL6000 Composite The composite and mux outputs are paralleled using a BNC Tee connector This is permissible since the outputs are switched internal to the receiver Only one ofthe receivers at a time will have any output The interlock control is achieved by first interconnecting the ground GND on the two receivers The XFR IN of each receiver is wired to XFR OUT of the other receiver GND XFR IN and XFR OUT are located on the barrier strip on the rear of the receivers Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 2 19 2 9 4 Receiver Interconnect PCL6000 606 600 Mono PCL6000 PCL606 and PCL600 receivers used in a main standby configuration can be interconnected to perform automatic switchover if a detectable failure occurs in the on line receivers As shown in Figure 2 12 the antenna is routed to each receiver through a power divider such as the Moseley model PD 1000 The use of a power divider is recommended so that the impedance as seen by each receiver is approximately 50 ohms The mono and mux outputs are paralleled using a BNC Tee connector This is permissible since the mono and multiplex outputs are switched internal to the receiver Only one ofthe receivers at a time will have any output The interlock control is achieved by first interconnecting the ground GND on the two receivers Then XFR IN of each receiver is wired to XFR OUT of the other receiver GND XFR IN and XFR OUT are located o
186. nsmitter Channel Control Connector Pin Out The REMOTE ENABLE line requires a contact closure to GND or logic level 0 low to enable the system for remote operation The remote logic is ACTIVE HIGH with internal pull up resistors and follows a standard BCD input standard utilizing contact closure or TTL logic levels Table 2 4 shows the truth table for channel selection Moseley PCL 6000 Document No 602 13375 01 Rev B 2 22 Installation Complete operating instructions for the Multichannel System are found in Section 3 Table 2 4 Channel Control Remote Interface Logic CHANNEL oO Ri Oo N o EI e O OO x x X gt OO OO x x x x O x x O O x x O O x x O O x x O XO xX Ox O x O x O x O x O x CO Jo Om P WN Oo x x x x x x x x x x x x x x x x O O O O O O O O x x x X X x x x o o o open circuit x gnd contact closure Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 3 1 3 Operation 3 1 Introduction This section describes the controls and adjustments of a PCL6000 system that the user will encounter in normal operation and initial setup Front panel metering and controls as well as rear panel connectors are shown and described Standard single channel STL and Multichannel configurations are discussed and the appropriate panel diagrams can be found in the corresponding figures 3 2 Transmitter Operational Controls 3 2 1 Transmitter Front Panel The PCL6010 transmitter
187. nted inductor form a X3 multiplier The multiplier converts the input sinusoidal signal to a stream of impulses These impulses are fed to an LC output circuit L16 and C101 which is tuned to the desired output frequency The multiplier output is routed through an external three pole helical filter and is tuned to the LO output frequency 291 MHz nominal The output is terminated into a 3 dB attenuator reducing the output power to that required by the 1st mixer and providing a wideband match for the filter The undesired harmonics are suppressed at least 40 dB The output power is between 5 and 9 dBm 4 2 2 4 1st Local Oscillator 330 450 MHz The 1st LO signal is derived from crystal controlled oscillator Q5 The fifth overtone crystal 96 250 MHz nominal is temperature stabilized by a 65 C proportionally controlled oven Oscillator buffers Q6 and AR1 isolate the oscillator and amplify the signal preventing frequency pulling when adjusting the multipliers The output of the buffer is doubled in an active push push doubler The single ended input from the buffer is split into two out of phase voltages in T1 and applied to the bases of Q7 and Q8 The output of these two transistors is summed at their collectors The output of the doubler is tuned by C94 and L14 and is impedance matched to the step recovery diode multiplier by C95 and C96 The diode self bias current is determined by RT1 The step recovery diode CR14 forms the heart of a X2 m
188. nto the resonant circuit If the Multichannel option is being utilized in the System these settings come from the Channel Control board s programmed inputs at J11 5 18 6 and switch S4 must be disabled open circuit If the RF module is being used as a stand alone switch S4 is used to switch in the required capacitors In either case green LED indicators CR6 F1 and CR5 F2 will light to indicate which setting is active The FIX capacitor is normally used to band switch to a frequency far removed from the initial setting The lock detect signal at U1 28 is a series of pulses at the step size rate 25 kHz when the loop is locked The low pass filter R19 and C13 provide an average voltage at U3 5 of 5 VDC when the loop is locked If the loop becomes unlocked the average voltage drops to 2 5 VDC This causes the output of comparator U3 to change state which lights the red LOSS OF LOCK LED on the module Also the voltage at FL2 drops from 5 to 0 VDC causing the radiate control circuitry to put the transmitter in STANDBY The output frequency of the FMO is determined by the divider values programmed into the PLL chip U1 If the Multichannel option is being utilized in the system these settings come from the Channel Control board s parallel inputs at J11 and the internal switches S1 S2 S3 and S4 1 must be disabled S4 1 open circuit and S1 2 3 set to F If the RF module is being used as a stand alone the frequency is set by the va
189. onnector P2 The regulated 12 VDC is used to power the crystal ovens for the 1st LO and FMO reference oscillator crystals WARNING Failure to ground the third lead of the input power cord may result in hazardous shocks to personnel The AC power connector includes an RF filter The transformer primary windings support the four selectable input voltage ranges 100 120 220 and 240 VAC Operating voltage is selected by programming the line filter fuse holder on the rear panel as described in Section 2 2 1 AC Line Voltage Selection 4 2 1 2 Radiate Control Logic The Radiate Control Logic circuitry consists of Q3 S1 and U1 This circuit will allow the transmitter to radiate when the following conditions are simultaneously met Moseley PCL 6000 Document No 602 13375 01 Rev B 4 2 Module Characteristics 1 The OPERATE STANDBY switch S1 is in the OPERATE position or the OPERATE STANDBY switch S1 is in the STANDBY position and pin 4 D of the transmitter I O panel remote connector RMT RAD is at ground potential see Figure 2 13 The AFC LOCK signal from the RF module P4 2 is HIGH 5 VDC 3 Pin 9 K of the back panel remote connector RMT OVRD is floating not connected to ground This will appear as 5 VDC on this pin see Figure 2 13 When all of the above conditions occur the base of Q3 will go from 3 Vto 0 V enabling the 12 5 VDC power supply The IPA and RFA will operate thus allowing the transmitt
190. panel metering information The output power is approximately 10 dBm 1st Local Oscillator 330 450 MHz The 1st Local Oscillator LO1 section of the RF module consists of an oven controlled crystal oscillator a doubler and a step recovery diode SRD multiplier The oscillator operates at 96 25 MHz nominal The resultant multiplication factor of the LO is X4 The output 385 MHz is externally filtered and then attenuated before being applied to the upconverter mixer A level detector provides front panel metering information The output power is approximately 10 dBm 1st Local Oscillator 220 MHz The 1st Local Oscillator LO1 section of the RF module consists of an oven controlled crystal oscillator and a step recovery diode SRD multiplier The oscillator operates at 97 MHz nominal The resultant multiplication factor of the LO is X3 The output 291 MHz is externally filtered and then attenuated before being applied to the upconverter mixer A level detector provides front panel metering information The output power is approximately 10 dBm 1st Local Oscillator 1 7 GHz The TX RF module output freguency 850 MHz nominal is multiplied X2 in the Doubler Assembly to achieve the desired carrier freguency 1 7 GHz nominal Therefore the operating freguency of the 1st LO is nearly identical to the 950 MHz band configuration The 1st LO LO1 section of the RF module consists of an oven controlled crystal oscillator a doubler
191. ply Schematic 600 10710 01 Receiver Audio Power Supply Assembly 20B3024 C G D AH EL ELI C JEE D 6030 Receiver Final Assembly 21828921 D D E E VT _ J E LEI C C E We G A 6020 Receiver Final Assembly 21B2891 1 Receiver RF Module 6020 6030 Assembly J J Preamp 1st Mixer 6060 Schematic J P Double Converter LO3 6030 6060 91B7451 Schematic Double Converter LO3 6030 6060 Assembly FM Demod 6030 6060 Assembly Adjacent Channel Filter 6060 Assembly 1 C C E E F G 1 NOTICE This section contains schematic and assembly drawings referred to in Sections 1 and 4 For information on individual drawings refer to Section 1 under System Description and or Section 4 under Module Description Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 7 67 SUPPLY RF MODULE OWE N Le N TX AUDIO N N N d N Ns s DEE amp 21D2890 1 Rev G 6010 Transmitter Final Assembly 950 MHz Moseley PCL 6000 Document No 602 13375 01 Rev B 7 68 Schematic and Assembly Drawings 15V AFC L
192. ply board converts any of four AC input voltages 100 120 220 240 VAC into the four regulated DC voltages required for the operation of the receiver The outputs are 15 15 and 5 VDC for the most of the system electronics A regulated 12 VDC supply powers the crystal ovens in the 1st and 2nd LO Power Supply DC Option Receivers configured for DC operation only 12 24 and 48 VDC have internal switching power supplies to provide the system voltages These supplies can be isolated from chassis ground to allow negative DC source operation Multichannel Operation Option The Multichannel Control board is pre programmed to select the receiver frequency selection by controlling the LO2 synthesizer in the RF module This Control board has facilities for over ride Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 1 11 of the pre programmed channel freguencies Channel 0 operation Remote control of the channel selection is also provided on this board through access to the back panel Channel selection and display is accessed by the user through the front panel The Channel Control board connects to the RF module via a 25 pin D ribbon cable The RF module must be compatible for multichannel operation Please contact the factory for field retrofit of the system Moseley PCL 6000 Document No 602 13375 01 Rev B System Characteristics Figure 1 1a PCL6010 Transmitter Block and Level 92A1319 R
193. point used to monitor the output level of the baseband processor 50 kHz deviation wideband or 35 kHz deviation narrowband 3 5 Vp p 5 4 11 Adjacent Channel Filter PCL6060 COMP MONO SELECT Selects proper filter for intended system application Composite E1 E2 or Mono 5 4 12 Channel Control Board Multichannel Option CHNL SELECT S1 Front panel select control Selects channels 0 15 FIX LED CR1 LED indicates EPROM output bit C5 FIX capacitor in RF Module is active F2 LED CR2 LED indicates EPROM output bit C4 F2 capacitor in RF Module is active F1 LED CR3 LED indicates EPROM output bit C3 F1 capacitor in RF Module is active MOD 1 LED CR4 LED indicates EPROM output bit C2 MOD1 adjustment is active Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 5 45 MOD2 LED CR5 MOD3 LED CR6 DGT1 TEST E1 MOD IN TP1 MOD1 LVL ADJ R12 MOD2 LVL ADJ R13 MOD3 LVL ADJ R14 MOD OUTPUT TP2 INTERNAL REMOTE ENABLE S6 1 CHNL SELECT S6 2 S6 3 S6 4 S6 5 LED indicates EPROM output bit C1 MOD2 adjustment is active LED indicates EPROM output bit CO MOD3 adjustment is active Short circuit this test point to turn on all segments display 8 of DGT1 Modulation input to control board 3 5 Vp p nominal Modulation adjustment 1 set active by EPROM or CHNL ZERO programming Modulation adjustment 2 set active by EPROM or CHNL ZERO programming
194. r d dAL 1 La 13S T3431 ONYAISVA 73A31 TWNOIS NVSdSVH d d age ASL 208 F NI Aw X027 AZ 1 gt on vo NI 38V SHOLSIS3H L NAHL Ya SLNIOd Sl Od 1S3L S og EE NI NUE X083 48 9 TVN9IS 73437 907 20 ZZ seu ov ATOHSJAHL ILAN dd sngg o AGL U LATIANV GNVEASVE 06FNZ LION CG V 207 HALATIN Vit L oer d dazi 4 dH HW OF NI wagp oi 02F d d 4 i Q GR A INL wl Ji OT 9028 yn 894 UALIWIT 90727 777 Wa HAALAITANV TAA 91B7387 Rev F FM Demod 6030 Schematic Document No 602 13375 01 Rev B Moseley PCL 6000 Moseley PCL6000 7 31 D 20B2949 Rev G FM Demod 6030 Assembly Moseley PCL 6000 Document No 602 13375 01 Rev B 7 32 Schematic and Assembly Drawings 7 2 PCL 6000 330 450 STD pe er A c LEVEL DATE Transmitter Final Assembly 330MHz 21828904 D 0895 Transmitter Final Assembly 450MHz 21B2890 5 D 0895
195. r position Verify that the meter reads within the 3 K range of the middle scale 3 Position the OUTPUT LEVEL switch on the signal generator to 100 Verify that the receiver meter reads within the 3 uV range on the center scale Note the position of the meter reading as a reference for the 60 dB point 4 Position OUTPUT LEVEL on the signal generator to 40 Increase the frequency on the signal generator until the meter reading on the receiver front panel is the same as the value noted in paragraph 3 Subtract the carrier frequency from the value indicated on the signal generator The value calculated indicates the positive 60 dB point Moseley PCL 6000 Document No 602 13375 01 Rev B 5 8 Alignment 5 Decrease the freguency on the signal generator until the meter reads the same as the value noted in paragraph 3 Subtract the freguency indicated on the signal generator from the center freguency This value indicates the negative 60 dB bandwidth point 6 The bandwidth calculated in steps 3 and 4 should be no greater than 400 kHz Specification PCL6020 Bandwidth 1st 10 7 MHz IF 2nd 10 7 MHz IF 400 KHz 30 dB 60 dB Specification PCL6030 6060 Bandwidth Wideband 60 dB 450 kHz 350 kHz Note The Wideband Narrowband filter bandwidth can be selected in the PCL6030 6060 system by properly positioning jumpers E2 and E3 in the Double Converter LO3 module Troubleshooting Notes The cable between the RF signal
196. radio Moseley PCL 6000 Document No 602 13375 01 Rev B Moseley PCL6000 5 27 which is within acceptable performance and regulatory limits On rare occasions this shift may be greater thereby exceeding allowable carrier freguency limits