HP G02935 User's Manual
Contents
1. POSITION RANGE VERNIER RESULT SETTING 170us 230us 260us 340us 350us 450us 440us 560us 530us 670us 620us 780us 710us 890us 800us 1000us Model 214B Adjustments ADJUSTMENTS 5 14 CONSTANT DUTY CYCLE AND WIDTH EQUIPMENT Counter Timer 50 2 Feedthrough WARNING High voltage dangerous to life Note f width potentiometer R222 has been replaced set the new potentiometer so that its resistance is 200 Q CAUTION Next fit the dial so that the 1 on the light grey scale is exactly beneath the arrow 1t may be necessary to Do not overload feedthrough or counter inputs slightly readjust if specifications cannot be reached COUNTER TIMER E Ete g PROCEDURE 1 Connect equipment as shown in Figure 5 3 and set 2148 controls as follows MODE rl Aa NORM PERIOD Range pias ims 10ms PERIOD Vernier a cotum ke 10 POSITION Range 0 1u lu POSITION Vernier s reg Ra 1 DUTY CYCLE arta eh oad depressed DUTY CYCLE Range o uz ise arcanis 196 1096 DUTY CYCLE Vernier p 10 WIDTH RANGE cum oper AMPLITUDE Range 1 3 V AMPLITUDE Vernier as required INT OAD AAA an NG ki SCOPE ora aT nap a NA AD ESI DEL ADVIDOB E ve mA ace odes wake DEL POLARITY AE BALA NG deed POS don t care NOTE Period settings must be done by using the counter pow 2 Set 214B period to 10 000us a Measure time between positive and negative2. Performance Tests Model 214B PERFORMANCE TESTS 3 Set Oscilloscope controls to get a display as shown in Figure 4 14 4 Vary EXT INPUT LEVEL control from CCW to CW and check that trigger level is adjustable within 5V and 5V Figure 4 14 5 Repeat step 4 with SLOPE set to and check trigger level variation as shown in Figure 4 15 Figure 4 14 Figure 4 15 i x Go WT wa y p pen Kk WA M NUIT yi i to pi A po NOUN M Model 214B Performance Tests PERFORMANCE TESTS Table 4 1 Performance Test Record Hewlett Packard Company Model 214B 214B Option 001 Tested By Pulse Generator Serial No i AI A Para No Test Description 4 10 REPETITION RATE VERNIER ACCURACY PERIOD RANGE VERNIER SETTING Au ipu 10 890ns 1110 ns 1u tou 10 8900 ns 11100 ns 10g 1m 10 89 us 111 us im 1m 10 890 us 1110 us im 10m 10 8900 us 11100 us E 10m 1 10 89 ms 111 ms 10m 1 1 8000 us 12000 us 1m 10m 1 800 us 1200 us im im 1 80 us 120 us tOu 1 m 1 8000 ns 12000 ns Tu 10u 1 800 ns 1200 ns Au nu 1 80 ns 120 ns lpn tp 2 170 ns 230 ns 3 260 ns 340 ns 4 350 ns 450 ns j 5 440 ns 560 ns 6 530 ns 670 ns 7 620 ns 780 ns 8 710 ns 890 ns 9 800 ms 1000 ns DUE UA FIEL LULA WOdEl 2145 PERFORMANCE TESTS Para No Test Description 4 11 PULSE POSITION DELAY ADVANCE VERNIER ACCURACY Time between TRIGGER OUTPUT and OUTPUT DELAY with VERNI
3. 3 Set PERIOD VERNIER exactly to 10 Switch from range to range and check that Counter Timer reading is within the listed resuits A LAMA pes 4 Set PERIOD VERNIER exactly to 1 Switch from range to range and check that Counter Timer reading is within the listed results 5 For checking dial tracking set PERIOD VERNIER exactly to the listed settings and check resuits sb o VE Y a Qnnac 1914 hk ty pi OGuuns ZUUnS puta 1 Sons 12005 PERIOD RANGE VERNIER RESULT SETTING 890ns 1110ns 8900ns 11100ns 89us 111us 890 us 1110us 8900 us 11100us 89ms 11 ms VERNIER RESULT SETTING lm Im PERIOD RANGE 10m 1 1 8000 pis 12000 us im 10m E 3 800us 120045 im Im 1 BO us 1204s 104 Im 1 8000ns 12000ns PERIOD RANGE VERNIER RESULT SETTING i 170ns 230ns 260ns 340ns 350ns 450ns 440ns 560ns 530ns 670ns 620ns 780ns 710ns 890ns 800ns 1000ns Cc Om Ci B WN rerrormance Fests Vodei 2148 PERFORMANCE TESTS 4 11 PULSE POSITION DELAY ADVANCE VERNIER ACCURACY SPECIFICATION Fa DELAY Pulse can be delayed with respect to the Trigger Output from 10ns fxd delay to 10ms in 5 decade ranges Fixed delay is 50 ns 10 ns ADVANCE Pulse can be advanced with respect to the Trigger Output from 10 ns fxd delay to 10 msin 5 decade ranges
4. 30 Y 4 devs Veepriac gt 6 AME B AMPLITUDE Vernier 1 0V gt o etw SE en Sede L INT LOAD cds anios Ds aU Rl Released u NN SLOPE leue Sons y d HEUS FACTOR OU S REC DEL ADW IDEB otia gea de EAT DEL OUTPUT POLARITY ci sees wien as required don t care Performance Tests Mode 214B PERFORMANCE TESTS 2 Measure transition time of leading and trailing edge from 10 to 90 of pulse amplitude for positive and negative going puise 90 mE 9096 100 AMPLITUDE 100 AMPLITUDE 3 Measure Preshoot Overshoot and Ringing of Positive and Negative pulse 5 15 OVERSHOOT RINGING DNE NE PRESHOOT 100 AMPLITUDE 100 AMPLITUDE 5 PRESHOOT i 5 54 DROOP OVERSHOOT RINGING Mode 214B 4 16 SPECIFICATION PERFORMANCE TESTS TRIGGER OUTPUT DOUBLE PULSE Trigger Output Minimum Amplitude 5V from 50 ohm into open circuit Pulse Width 10ns typical Double Pulse 5 MHz in ali ranges except 30V 100V range in 30V 100V range the maximum frequency is 2 MHz Minimum separation between double pulse is 100ns EQUIPMENT Sampling Oscilloscope 20dB Attenuator 20dB Attenuator 50W SAMPLING OSCILLOSCOPE AA Figure 4 10 1 Connect equipment as shown in Figure 4 10 and set 214B controls as follows MODE o PARE AA NORM PERIOD Range EOM lu tp PERIOD Vernier ta RR 2 POSITION Range 2 6 02
5. D HEWLETT PACKARD OPERATING AND SERVICE MANUAL 21B PULSE GENERATOR Including Options 001 and 907 to 910 SERIAL NUMBERS This manual applies directly to instruments with serial number 1846 G 00596 and higher Any changes made in instruments having serial numbers higher than the above number wil be found in a Manual Changes supplement supplied with this manual Be sure to examine this supple ment for any changes which apply to your instrument and record these changes in the manual Any changes made in instruments having serial numbers lower than the above number can be found in the Backdating Section 7 119 GO ay oor HEWLETT PACKARD GmbH 1980 D 7030 BOBLINGEN HERRENBERGER STR 110 FEDERAL REPUBLIC OF GERMANY MANUAL PART NO 00214 90012 Microfiche Part No 00214 95012 Printed February 1981 Bre lf Corded emes RE by 27 A roy Eu p p qe f bak alo Eti GIW Ce Corona pal hel Gen eral information Model 2148 e 9 6 0 0 0 8 e 4 S Ont al NEU ino o lui SN bi mamal s v G po i pig 2 ES E 7i 7 gogo z TUE i m m a Cp him pri VES EGRE E S 2 Jis E sali vi EN picis T E m a 3 TM n D a 3 E E 3 AE d BR ETE dor NN x E i 2 E Lo wo obi ME A as 8 DA a BA E m amp H E S ae ee we a c4 j e A 7 wo EC 377 j y A F ij ay 5 F Figure 1 1 214B and supplied Accessories Option 001 fitted Front hand
6. 10m pulse position range minimum separation is ims La SEPARATION any i 1 l PULSE i POSITION i i pu PERIOD a Figure 3 3 Timing parameters in Double Pulse Mode 3 23 DUTY CYCLE 3 24 Duty cycie is defined as the percentage ratio of pulse width to pulse period With the 214B a DUTY CYCLE pushbutton is provided whereby if released the WIDTH pushbutton row is operational and the vernier provides continuous width adjust ment within the selected range in this case the width remains constant when the period is changed hence duty cycle varies with frequency if pressed then only the DUTY CYCLE range push buttons are operational and the vernier provides continuous adjustment of duty cycle within the selected range Once set the duty cycle remains constant in the event of a frequency change This feature is referred to as Constant Duty Cycle Mode of operation 3 25 When the DUTY CYCLE pushbutton is released the pulse width is set via the WIDTH pushbutton row and related vernier the duty cycle then being operator calculated by relating this time to the output pulse period The maximum duty cycle in this case whether internal or external trigger IS at least 10 for the 30 100 V amplitude range at least 50 for all other amplitude ranges up to a max pulse width 10 ms If the maximum allowed duty cycle is exceeded the 214B output will be automatically disabled and
7. 8900 us 890 us 89 0 us 8 900 s 8000 us 7100 ps 6200 us 5300 us 4400 us 3500 us 2600 us 1700 us Performance Tests Mxs Aout 33 5 ns 116 ns 1 115 us 125 ns 1 205 us 12 00 us 120 0 us 1200 us 1110Qu s 1110 us 111 0 us 11 10 us 10000 us 8900 us 7800 us 6700 us 5600 us 4500 us 3400 us 2300 us rerrormance tests Model 214B PERFORMANCE TESTS Para No Test Description Min Mas Aowa 4 13 CONSTANT DUTY CYCLE VERNIER ACCURACY Constant Duty Cycle at 1000 ns Period 80 ns typ 202 5 ns 297 5 ns 840 ns 1166 ns Constant Duty Cycle with Vernier set to 2 5 Constant Duty Cycle with Vernier set to 10 Constant Duty Cycle at 100 ms PERIOD with Vernier set to 1 with Vernier set to 10 75 us 125 us 840 ps 1160 us PERIOD VERNIER SETTING 100 0 ms 10 8 4 ms 11 6 ms 100 0 ms 9 7 55 ms 10 45 ms 100 0 ms 8 6 70ms 9 30ms 100 0 ms 7 5 85 ms 8 15 ms 100 0 ms 6 5 00 ms 7 00 ms 100 0 ms 5 4 15 ms 5 85 ms 100 0 ms 4 3 30 ms 4 70 ms 100 0 ms 3 2 45 ms 3 55 ms 100 0 ms 2 1 60 ms 2 40 ms 100 0 ms 1 75 ms 1 25 ms 10 ms 1 75 us 125 ps 4 14 PULSE AMPLITUDE VERNIER ACCURACY SOURCE iMPEDANCE AMPLITUDE RANGE VERNIER SETTING INTERNAL LOAD OFF 30 100 3 27 V 10 90 V 10 30 3 DARK 27 V 1 SCALE 9v INTERNAL LOAD ON 30 100 3 13 5 V 10 45 V 10 30 3 DARK 13 5 V 1 SCALE 4 5 V Model 214B PERFORMANCE TESTS Pertormance jests Para No
8. Fixed delay is 50 ns 10 ns VERNIER Accuracy 10 of setting 1 of full scale fixed delay Fixed delay is 50 ns 4 10 ns EQUIPMENT Sampling Osciltoscope FIS 2x 20dB Coax Attenuator bb To E 2 x 50 2 Feedthrough Counter Timer CAUTION Do not overload Attenuators and Oscilloscope inputs SAMPLING OSCILLOSCOPE COAX ATTEN CABLES EQUAL LENGTH Figure 4 2 t Connect equipment as shown in Figure 4 2 and set 214B controis as follows MODE ea a Se APES OE NORM A PERIOD Range tren it e ki o Aoc Rod bos Aes Au lu PERIOD Vernier me o NGA Na 10 Soli Cw POSITION Range cua oo dU Dear a e SURE eet ee ha aes 10n tu POSITION Vernjer s dia caco REX S ual c 10 DUTY CYCLE Yo sus ad aa e ecd i GT RORIS Depressed DUTY CYCLE Range diia S DUTY CYCLE Vernier 002 ooo ooo ooo ooo AMPLITUDE Range Pee ee NONE Y 1 3 AMPLITUDE Vernier oleo as required ENT EDAD auto disi O RR A ARS SLOPES fen ate rta a rd de dou BEEP es BB dvd secte edea ur hiv ex CIR QURE AA DELAY OUTPUT POLARITY oua FA GG Lala pA emu POS don t care Model 2148 Performance Tests PERFORMANCE TESTS 2 Trigger Sampling Oscilloscope to Channel A and set Timebase to 20ns DIV Bpi Luya ibg CH ANO L N 3 Ensure that POSITION VERNIER is set exactly to 10 and measure time between TRIG OUTPUT and OUTPUT signal RESULT 129 ns 171 ns 4 Set VERNIER exactly to 1 and check that del
9. POR PS ee ee mE 6 Switch 214B to GATE MODE and increase external pulse width GATE SIGNAL kt ie raids Os e 7 When increasing GATE SIGNAL number of pulses should increase step by step 8 Check GATE MODE with SLOPE set to INT DEL DEL SET H GATE SIGNAL 2148 OUTPUT SLOPE oha A A A ee 214B OUTPUT SLOPE OE A ee QNNM ee Model 214B PERFORMANCE TESTS Performance Tests 4 18 VARIABLE TRIGGER LEVEL SENSITIVITY SPECIFICATION Trigger Level Continuously variable from 5V to 5V Sensitivity 500mV peak to peak EQUIPMENT Oscilloscope Sinewave Generator Tee i CAUTION Do not overload Oscilloscope Inputs OSCILLOSCOPE a e Fe 505 SINEWAVE GENERATOR 2148 INSERUIT ie A an MA pe oO O O i ING OTRIG OUT OUTQ O O GSS Figure 4 13 1 Connect equipment as shown in Figure 4 13 and set 214B controls as follows MODES EAS EXT TRIG PERIOD Range seg as PERIOD Vernier vans a POSITION Range said ata tOn 1u POSITION Vernier uo io WAG 1 DUTY CYCLES us GE VS aa Released WIDTH Range Guin drid ra Au du WIDTH Vernier ues A wate e 10 AMPLITUDE Range ce x Re 3 10V AMPLITUDE Vernier ooo as required INT LOAD ieaie nunta hie es SCOPE Ar ara ev debe aS wed DEL ADV D P ac Rd VA DEL OUTPUT POLARITY ua TES POS EXUINPUT LEVEL red as required 2 Set Sinewave Generator to 100 KHz and 11V amplitude peak to peak
10. 3V INE LOAD o eta e wt SLOPE aui Kya a od Se ee OO M DELJADVIDR esteril A Scan DEL OUTPUT POLARITY i6 de ERG A aus POS don t care Model 214B Performance Tests 6 7 PERFORMANCE TESTS NG jm Adiust 2148 PERIOD VERNIER for exactly 1000ns reading on counter and measure output pulse width RESULT typically 80ns 8 Fixed duty cycle is indicated by LED UNS Select tus tOus PERIOD range and adjust PERIOD for 10 000ns 2 5 1094 duty cycle range is indicated by LED R S oA Set DUTY CYCLE VERNIER WIDTH VERNIER to 2 5 and measure pulse width RESULT 202 5 297 5ns With VERNIER set to 10 width should be 840 1160ns NOTE Trigger Sampling Oscilloscope EXT after adjusting PERIOD with Counter Timer 2148 COUNTER TIMER Fa i Cana HN 0m o o7 9 E usc A i TR d p de E y er Te kaa we Lov 1 TE Figure 4 7 Change Test Setup as shown in Figure 4 7 and set 214B controls as follows MODE 054 xiu O UE ei he a NORM PERIOD Range TINTE 10m 1 PERIOD Vernier viuda Guys defe tee ia ded 10 POSITION Pande us cha e EVER RP EE v TOn Tu POSITION VEM raid e wa Es ee 10 DIT ASE YO LE NG aio ras Tabak a Depressed DUTY CYCLE Range an a eee aco bA HA a 1 1 DUTY CYCLE Vernier educ ade 1 AMPLITUDE Range csi IT See E 1 3 AMPLITUDE Vernier euro eee enn ea annan 3 3V INT LOAD O ciet dut ween ee be doe Stet es SLOPE I rusa Pee tie rents PP LAJ
11. High voltage dangerous to life Note f position potentiometer R158 has been replaced set the new potentiometer so that its resistance is 300 Q CAUTION Next fit the dial so that the 1 on the light grey scale is exactly beneath the arrow it may be necessary to slightly Do not overload feedthroughs and inputs readjust if specifications cannot be reached 2148 COUNTER TIMER 5052 FEEDTHROUGH CABLES EQUAL LENGTH Figure 5 2 PROCEDURE 1 Connect equipment as shown in Figure 5 2 and set 214B controls as follows MODE aaa Aa NORM PERIOD Range zx Chry emm im 10m PERIOD Vernier ege rs xx 10 POSITION Range queso S Yan be voce Im 1m POSITION Mariela we RA 10 BUTY CYCLE J hs iE REIR released WIDTH Vernier V zo bile b S hace clas 10 WIDTH Range ariba ea vente eode iu 10u AMPLITUDE Range eso RR 3 10 AMPLITUDE Vernier ice ERES as required IN OO ES o iva ca ki SLOPE 11 uud Shey eee fa Ad ki DEL ADV D E ira ux cm ya DEL OUTPUT POLARITY ava senn sh Ss POS don t care 2 Set Counter Timer to TIME INTERV A to B trigger both channels to Ex slope and measure time between trigger and output signal a Adjust A2R45 for 1000us delay 10ps POSITION Vernier exactly set to 10 4 Set Position Vernier exactly to 1 and adjust A2R119 for 100pus tus 5 5 Adjustments Model 2146 ADJUSTMENTS 5 Repeat step 3 and step 4 and readjust if necessary 6 Check Vernier Accuracy for specifications as listed below
12. 13 5V 16 5V 9V 11V 4 5V 5 5V PAANO WE 16 A 3 Switch 214B AMPLITUDE range to 3 1 and remove one 20dB attenuater 4 Check AMPLITUDE ranges with VERNIER settings as listed AMPLITUDE VERNIER RESULT RANGE SETTING 271V 33V V LIV 2 7V 3 3V OV 1 1V 5 Select 3 10V AMPLITUDE range and measure Vernier Accuracy AMPLITUDE VERNIER RESULT RANGE SETTING 2 7V 3 3V 3 6V 4 4V 4 5V b 5V 5 4V 6 6V 6 3V 7 7V 7 2V 8 8V B1V 9 9V 9V 11V 3 4 5 6 7 8 9 1 Model 214B Performance Tests PERFORMANCE TESTS 4 15 TRANSITION TIMES PRESHOOT OVERSHOOT RINGING PULSE POLARITY SPECIFICATION l Transition times S 15ns for leading and trailing edges Preshoot overshoot and Ringing lt t 5 of pulse amplitude Polarity Positive or negative switch selectable EQUIPMENT A TOP Sampling Oscilioscope YES 4 7 SOM TERM In e Tof S 20dB Attenuator 20dB Attenuator 50W CAUTION Do not overload Attenuators and Inputs SAMPLING OSCILLOSCOPE KP VER S AA d rE IG Figure 4 9 1 Connect equipment as shown in Figure 4 9 and set 214B controls as follows MODE aci y mee ag Ge a Re RENS NORM PERIOD Range caen tou Im PERIOD Vernier 265 my xs a 1 POSITION Range Ju IM POSITION Vernief as required DUTY CYCLE DRA Released WIDTH Range uus ia REESE 25n tu WIDTH Vernier uada x eet ERE 10 n MM AMPLITUDE Range sues dre Res 10
13. 2148 output amplitude is determined primarily by the AMPLITUDE pushbutton row and Operation AMPLITUDE vernier Also affecting the output amplitude are the 214B source impedance and the load impedance in the 3 1 3 10V amplitude ranges the source impe dance is a fixed 50 ohm and the amplitude indicated by the pushbutton range and vernier setting is true when operating with a 50 ohm load With a high load impedance in these ranges the front panel amplitude indication is one half of the actual amplitude On the 10 30 100V amplitude ranges the source impedance is selectable via the INT LOAD pushbutton When this pushbutton is in the released position a high source impedance exists and when depressed a 50 ohm source impedance is switched in The tower amplitude scale 10 30 100 applies when either the load or the source impedance is high NOTE one 50 ohm termination must remain The upper scale 5 15 50 applies when both source and load impedances are 50 ohm When the source impedance is high the HIZs LED is illuminated 3 31 POLARITY 3 32 The polarity slide switch is used to set the polarity of the selected amplitude with respect to OV e g with amplitude set to 36V and poiarity set to NEG then the output pulse transitions between OV and 36V Mode 214B Performance Tests SECTION IV PERFORMANCE TESTS 4 1 INTRODUCTION 4 2 The procedures in this section test the electri cal performance o
14. If the con tainer or cushioning material is damaged it should be kept until the contents of the shipment have been checked for com pleteness and the instrument has been checked mechanically and electrically The contents of the shipment shouid be as shown in Figure 1 1 plus any accessories that were ordered with the instrument Procedures for checking the electrical operation are given in Section 4 If the contents are incomplete if there is mechanical damage or defect or if the instrument does not pass the operator s checks notify the nearest Hewlett Packard office Keep the shipping materials for carrier s inspec tion The HP office will arrange for repair or replacement with out waiting for settlement 2 5 PREPARATION FOR USE 2 6 Power Requirements 2 7 The instrument requires a power source of 100V 120V 220V or 240V 5 1096 at a frequency of 48 to 66 Hz single phase The maximum power consumption is 380V A 2 8 Line Voltage Selection CAUTION BEFORE SWITCHING ON THIS INSTRUMENT make sure that the instrument is set to the local line voltage 2 9 Figure 2 1 provides information for line voltage and fuse selection l 4 AMP FUSE 2 AMP FUSE Figure 2 1 Switch Settings for the various Nominal Power line Voltages 2 10 Power Cable To avoid the possibility of injury or death the following pre cautions must be followed before the instrument is switched on a If this instrument is to
15. TRIG PERIOD Range 23 sis LIA lp 1u PERIOD Vernier ooo ooo 1 POSITION Range lt lt ooh 10n Au POSITION Vernier 1 DUTY CYCLE SG grrr Released WIDTH Range ouaaa anaana 25n iu WIDTH Vernier escena esu 3 AMPLITUDE Range cs 1 3 AMPLITUDE Vernier as required IST ODDIEDE esa daa ada es SLOPE da Ne E RS RAE as required DEL ADV Os coe s e ek w MA DEL OUTPUT POLARITY 222 wr irs s POS don t care Performance Tests Model 214B PERFORMANCE TESTS At as dy aff TP E RE E DER AO n e DO I l vpn A w us i kapag Haha T W E X Lo f ti E I Ws AME Satti PUER 2 Set Pulse Generator to 10ns pulse width amplitude to 0 5V peak to peak min and adjust ho trus ONN PERIOD for 100ns o wn e teat d Trigger 2148 with EXT INPUT LEVEL Control and check that for each ext trigger pulse one 214B output pulse is generated with SLOPE set to NEG and then one pulse with SLOPE set to POS EXT TRIGGER SLOPE 214B OUTPUT SLOPE 2148 OUTPUT 11008 INT C jj T MOU DE LAY PLUS essent NG GEO 4 AR VR bagy CLP a us IA DELAY SETTING NOTE It might be necessary to readjust INPUT LEVEL Control when changing SLOPE 4 Select BURST MODE and set Pulse Generator to the next PERIOD range down the scale 5 Set NUMBER OF PULSES from 0001 up to 0009 and check that the selected number of pulses corresponds to the displayed signal AA int LO ibus AA d e v
16. Test Description AMPLITUDE RANGE 3V i 3V 1 1V 3 tV 3 3V 10V 3V 10V 3V 10V 3V 10V 3V 10V 3V 10V 3V 10V 3V 10V TRANSITION TIMES PRESHOOT OVERSHOOT RINGING PULSE POLARITY Positive Pulse Transition Time Transition Time Overshoot Ringing Preshoot Negative Pulse Transition Time Transition Time Overshoot Ringing Preshoot rd VERNIER SETTING 10 3 3 DARK 1 SCALE 3 4 5 6 7 8 9 0 Leading edge Trailing edge Leading edge Trailing edge TRIGGER OUTPUT DOUBLE PULSE Trigger Amplitude from 50 Q into 50 2 Width Minimum Separation DOUBLE PULSE 5 MHz 10 30 V Range ZIN 9V 27V OV 2 7 V 3 6 V 4 5 V 5 4 V 6 3 V 7 2 V 8 1 V 9V 225V 10 ns typ 33 V LIV 3 3 V 1 1V 3 3 V 4 4 V 5 5 V 6 6 V LAN 8 8 V 9 9 V 11V lt 15ns amp 15ns lt i5b lt t5 lt 5 lt 15ns lt 15ns lt 5 lt 15 lt t5 lt 100 ns 4 27 Model 2148 PERFORMANCE TESTS Para No Test Description Result EXTERNAL MODES TRIGGER GATE BURST Trigger Output for each Pulse positive Slope negative Stope Number of Bursts increasing number pulses in GATE MODE 4 18 VARIABLE TRIGGER LEVEL SENSIVIT Y Trigger Level pasitive slope 5 V to 5 V MTM a e ENS Trigger Level negative slope 5Vto 5 V Trigger Sensivity lt 500 mVpp Parfnrmanra Tacte Model 214B Adjustments SECTION V ADJUS
17. amplitude 2 5 to 10 for 1 M 1 MHz frequency range S to 10 for 1 MHz 10 kHz frequency range 0 1 to 10 for all other frequency ranges Calibrated vernier provides continuous adjustment within duty cycle ranges Vernier Accuracy 15 of setting 1 of full scale Double Puise 5 MHz maximum in all ranges except 30V 300V range In 30V 100V range the maximum frequency is 2 MHz Minimum separation is 100ns Trigger Output Amplitude gt 5V from 50 ohm into open circuit Pulse Width 10ns typical Source Impedance 50 ohm nominal EXTERNALLY CONTROLLED OPERATION External Trigger Mode An output pulse is generated for each input pulse Gate Mode Gating signal turns on repetition rate generator First pulse occurs after start of gate signal and last pulse is always completed even if gate ends during generation of last pulse Burst Mode Optional Preselected number of pulses generated on receipt of trigger signal Number of Pulses 1 to 9999 Minimum Spacing between Bursts 200ns External Input Repetition Rate DC to 10 MHz Sensivitiy 500mV peak to peak dc coupled Slope Positive or negative Trigger Level Continuously adjustable from SV to 5V 100V i 2 10ns 10k ohm nominal Maximum Input Level Trigger Pulse Width input Impedance Manual Pushbutton can be used for triggering single pulses EXT TRIGGER Made generating gate signals GATE Mode triggering pulse burs
18. ringing is lt 5 If necessary readjust A1R419 A1R436 and A1R408 Select 10 30 V amplitude range switch internal load on and set amplitude to 30 V Adjust A1C501 for overshoot ringing Adjust A1R487 and A1R421 for flat pulse top Adjust R506 for minimum ringing Adjust A1C504 tor overshoot ringing Check risetime overshoot and ringing for specifications and if necessary optimize puise via C501 C504 R421 and R487 Switch internal load off check pulse specifications and optimize adjustment if necessary Recheck risetime overshoot and ringing at 100 V amplitude with and without internal load Select 3 1 V amplitude range set amplitude for 1 V and adjust A2C514 for minimum ringing Select the 1 u 1 u period range and press DUTY CYCLE pushbutton Set the Sampling Oscilioscope so that exactly one period is displayed Adjust A2R 197 for 8 duty cycle at 50 of amplitude Model 2148 Adiustments ADJUSTMENTS 5 17 TRIGGER LEVEL SENSITIVITY EQUIPMENT Oscilloscope Sinewave Generator Tee CAUTION Do not overload Oscilloscope Inputs OSCILLOSCOPE SINEWAVE GENERATOR Figure 5 6 1 Connect equipment as shown in Figure 5 6 and set 2148 controls as follows MODE swiss C o eet a EXT TRIG PERIOD Range sr arar a PERIOD Vernier a vac domes POSITION Range Iz A sana cox 10n iu POSITION Verniet lesen Loma ol DUTY CYCLE S ia ra ALAN RPG Release
19. thus safeguarded from overioad The disabled condition is generally indicated by the OVERLOAD LED At rates above 4 MHz however the Model 214B LED may not operate Consequently the user should verify width period settings and not rely on the LED when operating at higher rates The output is automatically re enabled when the width period relationship is adjusted for a duty cycle at or below the allowed maximum 3 26 CONSTANT DUTY CYCLE MODE 3 27 The constant duty cycle mode is selected by pressing the DUTY CYCLE pushbutton and only functions when the internal trigger is in operation i e NORM mode GATE mode and BURST mode if option 001 is fitted 3 28 When operating in constant duty cycle mode diffe rent duty cycle limits exist according to the rate setting These are typically 8 fixed in the 1MHz 10MHz rate range 25 10 in the 1MHz 1MHz rate range 25 10 in the 10 kHz 1 MHz rate range 1 10 for all other frequency ranges For the two highest rate ranges the duty cycle limits are indicated by an illuminated LED in those rate ranges where the constant duty cycle can be adjusted 1MHZz and lower the duty cycle is set via the DUTY CYCLE range push buttons and duty cycle vernier Whereas the settings on this vernier correspond to width times when the DUTY CYCLE pushbutton is released they are now used to set percentage duty cycle 3 29 AMPLITUDE 3 30 The Model
20. voltage on TP1 approx 155 V and TP5 approx 133 V and adjust A4R604 so that the voltage difference between TP1 and TP5 is 22 V 220 mV 2 Switch to 30 100 V AMPLITUDE Range and check that voltages increase to approx 263 V TP1 and 241 V TPS AV 22V 3 Check that power supply voltages are within limits as listed VOLTAGE TEST POINT RESULT MARKED ON PC BOARD 4 94 V 5 46 V MARKED ON PC BOARD 14 25 V 15 75 V MARKED ON PC BOARD 14 25 V 15 75 V MARKED ON PC BOARD 4 75 V 525 V 4 Check that the Q602 collector voltage is approximately half the 0601 collector voltage 5 2 Model 214B Adjustments ADJUSTMENTS 5 12 PERIOD ADJUST EQUIPMENT Counter Timer Note if potentiometer R107 has been replaced 50 S2 Feedthrough set the new potentiometer so that its resistance is 200 22 Next fit the dial so that the 1 on the light WARNING grey scale is exactly beneath the arrow It may be ETE necessary to slightly readjust the dial when High voltage dangerous to life specifications cannot be reached COUNTER TIMER TRIG OUT Figure 5 1 PROCEDURE 1 Connect equipment as shown in Figure 5 1 and set 2148 controls as follows MODE La a Ses o NORM PERIOD Range Teste a Ta c cn Ds im im PERIOD Vernier sardina 10 POSITION Range o0o o ooo qu 10u POSITION Vernier ass a mh to DUTY CYCLES daras d iss released WIDTH Vernier ee ee 1 WIDTH Range aia LES e qu
21. 10u AMPLITUDE Range 3 10 AMPLITUDE Vernier il ANT ROAD Ss Aia kg SLOPE a wus eas xd dd T DEL ADWV D P Laos e Y s DEL OUTPUT POLARITY d don t care 2 Ensure that Period Vernier s exactly set to 10 1 ms and if necessary adjust A1R69 on Output Amplifier Board for a counter reading of 1000 y Note Due to the influence of ATR69 on the width circuit width and duty cycle must be readjusted by any adjustment of A1R69 3 Set 214B Period Vernier exactly to 1 1 ms and adjust A2R46 for 100 us lt 1 96 4 Repeat step 2 and step 3 and readjust if necessary 5 3 Adjustments Model 214B ADJUSTMENTS 5 Check Vernier tracking for specifications as listed below PERIOD RANGE VERNIER SETTING RESULT 80us 120ps 170us 230us 260us 340us 350us 450us 44Qus 560us 530us 670us 620us 780us 710us 890 ps 800us 1000us 890us 1110us 1 2 3 4 5 6 7 8 9 0 awh Ou Set Pulse Position to 10 ns and press Duty Cycle pushbutton Select 1 u 1u Period Range and turn Period Vernier fuliy cew 3x Using the counter adjust A2R126 for 12 5 MHz Check that the frequency is in specification with dial set to 1 8 9 MHz 11 1 MHz and dial set to 10 0 8 MHz 1 2 MHz 8 Re adjust A2R126 if specifications cannot be reached Model 214B Adjustments ADJUSTMENTS 5 13 POSITION ADJUST EQUIPMENT Counter Timer 2 x 50 Q Feedthrough WARNING
22. 4 Youms 9P11S 3S ind JIBNOU JONVAGY AY i30 E mou uonnquysnd Aq jes eBuei au uri aoueape Aejap asind jo juaunsnipe snonuiuo 404 19 U49A pa3eJqile H3iNH3A NOI LISOd 3SINd eBue1 apo Ao Axnp pexjoajas ay UtuiiM iueunsnfpe snonutiuoo sapino4d januusA SIL epoul aj9 9 ALND jUBISU0D Uy e mou uo1inqusnd Aq 188 SPILL OUI UIUYILM Ulpim jo 3ueunsn pe snoun U09 404 AQIUISA PAJLIQUEI H31NH3A HACIA asjnd indino gy 241 104 1039934402 ONG LAGLNG esind ind3no y jo Ausejod ayi Dunaeros 104 YOJIMS EPS AL TH V TOd uozinqusnd 916 1ep e Aq pajoajas saDue1 o1 BuipuodsaJ109 ajeos ouu au 23 1e uoxingusnd A318 zybi e Aq papajas aBue4 Aue 03 Buipuodsaii09 a e25 jajno 9ui papiAO4d ase sajeos om 423 mou uopnqusnd ET a gt a Vio Palo9jas si a2uepedtuu avinos YBiy 1ey1 UONBaIPUI ensIA sepiao4d 131 SZ IH souepsduii 824nos uiuo OG e Bui29Jes 103 VONNAUSN4 AWOT ANI eBue1 epnujduje eux Buljoajas 101 MOI UOHNQUSNJ 30n LETdlA v pajqesip si 1ndino eui payeutunjji 1 1371 siy ueuM pepeeoxo si yun ajo s Ainp 1841 uon eorput JENSIA SaptAQ4J GAT GVOTH3AO eDueJ ajo o A1np ay 198195 0 pasn ae mou siy ul suo3inqusnd OMI 35414 SY UayI Passaid SI 9 uounqusnd 312A2 ALONG usym asjnd andino eui jo eGues upra y Butr10ajas 10 suonnqusnd jo MOY HLOIM pafueyo s Aouanbauj ay uauM 1ue1suoo suwa 9 2A9 Ajnp apoui siy uj epoul aj9 o Ajnp juej3suos Hulpo
23. 4500us 1m 10m 3 2600us 3400 ps tm 10m 2 1700 us 2300 us RESULT 110 10 10 10 8 904s 11 1045 89 045 111 0us 8904s 1110us 8900us 111004s TEN fogl A a E l Y 07 H l nica 5 n5 a 7 t Queer et borro 4 ex T NG ati TRIG 97 e E pQogny AC EXT e e Gat Je Berek Co MIGGY d M id Performance Tests Model 214B PERFORMANCE TESTS 4 13 CONSTANT DUTY CYLCE VERNIER ACCURACY SPECIFICATION Duty cycle of output pulse remains constant when pulse period is changed Typically 8 fixed for 10 1 MHz frequency range l 2 5 to 10 for 1 1 MHz frequency range 25 to 10 for 1 MHz 10 KHz Wo to 10 for all other frequency ranges Vernier Accuracy 15 of setting 1 of full scale EQUIPMENT Sampling Oscilloscope Counter Timer 5052 Feedthrough Tee 20dB Attenuator CAUTION Do not overload Attenuators and Inputs SAMPLING OSC LOSCOPE Cad Gi llas Figure 4 6 1 Connect equipment as shown in Figure 4 6 and set 214B controls as follows MODE sa se LARA AY PAG NA debat NORM PERIOD Range uso ere dV REIS X DEDE AG eS Ju TH PERIOD Vermeer aia VASE Ue EROR oe ede 10 POSITION Range rad 10n Ip POSITION Vernier ocios Ga ad PE hod 2d DUTY CYCLE OU NAA ML Rudi Depressed DUTY CYCLE Vernier ciao an DUTY CYCLE Range uso oup e apa kod BA ed ki AMPLITUDE Range a ske e eod ER e ms 1 3 AMPLITUDE Vernier de 3
24. ER set to 10 129 ns 171 ns DELAY with VERNIER set to 1 48 ns 72 ns ADVANCE with POSITION VERNIER set to 1 28 ns 52 ns Time between OUTPUT and TRIGGER OUTPUT ADVANCED with POSITION VERNIER set to 10 29 ns 71ns DELAY RANGE VERNIER SETTING Tutu 10 930 us 1 170 us tu 10u 10 8 94 us 11 16 us 10 u 1m 10 89 04 us 1111 06 us Am 1im 10 890 us 1110 us im 10m 10 8900 us 111100 us Tutu 1 120 ns 180 ns Tu 10p 1 840 us 1 26 us tOu 1m 1 8 04 us 12 06 us im im 1 80 us 120 ps tm 10m 1 800 us 1200u s 1m 10m 2 1700 us 2300 ps 1m 10m 3 2600 us 3400 us 1m 10m 4 3500 us 4500 us im 10m 5 4400 us 5600 us 1m 10m 6 5300 us 6700 us MUSEUM CER 1m 10m 7 6200 us 7800 ps im 10m 8 7100 us 8900 us EC 1m 10m 9 8000 us 10000 us EME Daortarmnana Tacte AR 1 p 4 KA Model 214B Para No PULSE WIDTH VERNIER ACCURACY MAX DUTY CYCLE Pulse width WIDTH VERNIER set to 2 5 Pulse width WITH VERNIER set to 10 J 1 Maximum Duty Cycle Maximum Duty Cycle 100 V amplitude 1 1 Test Description WIDTH RANGE tu 10u 101 1m im im Tm 10m tm 10m im im 10 u 1m tu 10p 1tm 10m tm 10m tm 10m 1im 10m 1m 10m im 10m 1m 10m 1m 10m PERFORMANCE TESTS Range WIDTH VERNIER set to 10 Range WIDTH VERNIER set to 1 VERNIER SETTING po pa pasa A 10 10 10 10 NY gt O01 O OO 21 5 ns 89 ns 890 us 80 ns 50 2 1076 80 us 8 00 us 80 0 us 800 0 us
25. Jas 82u0 eun a a EE e 4 apjaoJd 01 sjpejdeoal pabuouid sasuyi v INIT pasn Bulag e24nos Jamod etu JO payet uorjisod y 03 Jas aq sn SIHOLIMS HiOg ebe1 oA somos amod Aiewitid ayi 1da298 O J9tu40jsue n Jem od euaz oui 198109 8421M asay HO O3 138 39V 1OA aganos samod AOZ L AQOL Mo BuneJedo UBUM pasn si asn vp y 294005 Jamod ANZZ ADKZ Wouj Bunesado uaym pasn eq 15nui asnj MO G MO S WZ Y PEOHBAO JUa jo ases ut U01 29 04d JUSU nasu SPIAOIA 0 sasn PALPUEIS sideooy 38M 3 Jeus indu puJ91x8 JO 948 1986131 Sunsnipe 10 enuo 13437 LAdNi 1X3 u8unaisul eui 0 pas dde si amod oe Aieuinid UdYM sazeorput 937 ANIT JUBUUN ISU AY 0 Jemod oe Asewiad Bus Ajdde 103 uo1 S NO 440 3N17 pow syng ui andino asind aurs e GuiptAoad 401 uo3inqusnd 100 uondo 3S1Nd 2319NIS asang 1ndino asjnd e 404 jeubis sabb e sapiAOud osje YOIMS Siy Pel si 190 vondo ueuM epoui 31 v9 ui eubis e3eB Jo spou Diy 1X3 ul 4966143 jenuew e Surplaosd Jo uounqusng N VIA uone4edo pugw woo jenueui Gu1309jas 404 40 jeubtrs peutolxe jo adojs 1966117 6u1129195 104 YOUMS 9pIIS 3dO71S St ic 8pow Ed es nd 3nd1no 4966113 ayi 404 101200009 ONG LNdLNO DIL E mos uonnqusnd 3e pajsajas Suu BY UIYLA 8124 uoniiedas ayi jo 3ueunsn pe snonul1u02 10j J191U4BA PAIGE HaIlNH3A 31VH uonedodo asind ajqnop Sunsajas 10 1966111 ayi 0 1990534 YUM PadueApe peAejap eq oi esjnd 1ndino eui Sursajas 40
26. Switched off sy T and OVERLOAD LED is on Switch 214B to 1 3 V AMPLITUDE range 9 0 AJ epa eui ave Pp pt 2 Kar oa Kook COUNTER TIMER Figure 4 5 CT Aina 7 ka LAS 9 Change Test setup as shown in Figure 4 5 to measure Pulse Width in the 4 highest ranges Set 214B controls as follows MODE casar sita NORM PERIOD hang aa YE a Ent A 10m 1 PERIOD Vernier uo n Xp EPIFT NEUE 3 POSITION Range o ess ME a a POSITION Vernier AA PEN AN ki DUTY CYCLE Lasse teo A ata Neg 368 Released WIDTH Range so di Tu 10u WIDTH Verner sr EAS 1 AMPLITUDE Range paa Os 1 3 AMPLITUDE Vernier 00 4 208892 0040456 3 JV ANEESE AD Pakana wes tb acted RAE SLOPE ostenta d VIE CR A DELPJADVIDP ld iue NS eU cw DEL OUTPUT POLARITY Sia tada POS z don t care La LIE Wl me Pa l OT nt Loik AA ks A de ol Ll C AR bot MAAN Model 2148 Performance Tests PERFORMANCE TESTS 10 11 for specifications Check Vernier Accuracy for specifications as listed WIDTH RANGE VERNIER RESULT VERNIER SETTING 8 us 1 205 us 8 00 us 12 00 us 80 us 120 us 800 us 1200 us fa HA WIDTH RANGE VERNIER RESULT SETTING im 10m 9 8000 kis 10 000 us im 10m 8 71004s 8900us im 10m 7 6200 us 780045 im 10m 6 5300 us 6700us im 10m 5 4400 us B600 us im 10m 4 3500 ps
27. TMENTS 5 1 INTRODUCTION 5 2 This section describes the adjustments which will return the instrument to peak operating condition after repairs are completed 5 3 SAFETY CONSIDERATIONS 5 4 Although this instrument has been designed in accordance with international safety standards this manual contains information cautions and warnings which must be followed to ensure safe operation and to retain the instrument in safe condition see Sections and IH Service and adjustments should be performed only by qualified service personnel WARNING Any interruption of the protective grounding conductor inside or outside the instrument or disconnection of the protective earth terminal is likely to make the instrument dangerous intentional interruption s prohibited 5 5 Any adjustment maintenance and repair of the opened instrument with voltage applied should be avoided as much as possible and when inevitable should be carried out only by a skilled person who is aware of the hazard involved 5 6 Capacitors inside the instrument may still be charged even if the instrument has been disconnected from its source of supply 5 7 Make sure that only fuses with the required rated current and of the specified type normal blow time delay etc are used for replacement The use of repaired fuses and the shortcircuiting of fuseholders must be avoided 5 8 Whenever it is likely that the protection offered by fuses has b
28. V 100V 3 27V 33V AMPLITUDE RANGE VERNIER RESULT SETTING DARK SCALE 10 30V 9V 1MV 10 30V 18V 22 V 10 30V 27V 33 V 5 10 Model 214B Adjustments ADJUSTMENTS MINIMUM WIDTH OVERSHOOT RISETIME INT LOAD 5 16 FIXED DUTY CYCLE EQUIPMENT Sampling Oscilloscope 20dB Attenuator 20dB Attenuator SOW WARNING High voltage dangerous to life CAUTION Do not overload Attenuators or Oscilloscope inputs SAMPL ING OSCILLOSCOPE Figure 5 5 PROCEDURE 1 Connect equipment as shown in Figure 5 5 and set 214B controls as follows MODE tarta iaa ob NORM PERIOD Range sa mada tu 10u PERIOD Vernier ua 10 POSITION Range ie an a 10n 4p POSITION Verner c ena 1 DUTY YOL ES Yo Dia aa dogs released WIDOT Baie ac sich CV ess RAS 25n iu WIDTH Vernier ucl x es eh ee 2 5 AMPLITUDE Range 4 oras 10 30V AMPLITUDE Vernier sas 3 DARK SCALE PN ERD arar thee e OFF SCORES ad a DELJADV DEB Dress pa det a DEL OUTPUT POLARITY cosas POS don t care 2 Adjust A1R480 MIN PULSE WIDTH for 25ns WIDTH Adjustments Model 214B ADJUSTMENTS 10 11 12 13 14 15 16 17 18 Select 1 u 1 u WIDTH range and set vernier to 2 200 ns Set Amplitude to 100 V with internal load switched off Adjust A1R436 and A1R408 for fastest risetime Adjust A1R419 for minimum overshoot before amplitude decreases Check that risetime is lt 15 ns and overshoot and
29. ajas 103 UONNAUSNg FASAD ALNG ndino 1966113 941 0 399059 ui paougape psAe ap aq uea asjnd 1ndino eui uoru ui auei ay But128 9s 104 suojinqusnd jo MOY AV 730 NOLLISOd 35 Md 5 0409 ponad pue Aejap YIPIM ay jo sbuijjas eu ur ola utu jo uon eorput jensiA saplAoid apou WYON Yi Ga HOHH3 ONIWIL ayes uon nado jeusajui But 199 85 404 sUOJINGYsNd jo MOY GOiBad 31VH 2 HLGIM pue 9 01 9 Z SHUI eui utuil palea aq ueo ajo o Ainp 3BY uoneorpur jensia SOPlAO LG 031 96 OL G E paggununi si 037 SIY uaym pajqesip ase 473 Jaan pue 2 suonnqusnd UIPIM paisnipe aq GB Jejussa Aauanbosj pinoys 3uezsuon UIP HIM pue 9 8 1e paxiy si ajoAo Aanp 184 uoneorpul ENSIA seplAO4g Gai AXA 8 apow 1s4nq ul sesind indino Jo iaquinu ay Hunjasadd Joj YOJIAAS 89UA quiny 100 vondo SISINd 30 HIAWNN 925 uoiinqusnd NY IN 40 uonedsdo Aseyustwou Aq 40 JOWSUUOD LANAN 1X3 9u1 18 jeubis e Jo idisoas uo 1ndino ale sesind jo Jequinu pajajasaid e apaw siy uj cuorelado Jo epoui Ising Hurjoajes Joj uoingusng 100 ondo 19d 8 passaJd surewes Ea uo1jngq usnd NYIA ayi se Buo se Joj JO 10129u002 jNANI 1x3 84 01 petdde puis e jo uoneganp eui 404 paieiauab ase sesind 3ndino epoui siy uj uonededo jo apolu Bunes Bunosjes 10 UOPNGUSNG ZLY m uonnausnd Ny y aun JO Uoneiedo Aigj usWwow yoke 103 10 J0 D84U00 NAN 1X3 943 38 g3 ie apqeio09 9s ado s LOonisue Asana Joj pajelreuab st asjnd 3nd
30. ay is 48 ns 72 ns 6 Switch 2148 to ADVANCED and with VERNIER set to 1 delay should be 28 ns 52 ns AN Set Vernier exactly to 10 and measure time between OUTPUT and TRIG OUTPUT signal Ame W 4 ase A ne m RESULT 29 ns to 71 ns 8 Change test setup to that shown in Figure 4 3 to check DELAY RANGES 1u iuto 1m 10m dilaw NEAR ATES X Ad t ta sigh eri no ng Py ry Aiken ka l COUNTER TIMER wet jot A yp Core n che eX Q o 01979 A Ce Kayod CL Fh n pg AN CL 5042 FEEDTHROUGH ree FIT ve pes O CABLES EQUAL e oken a rin Figure 4 3 VA TAZ YA A ke ae AL da dmm Y 9 Set 214B controls as follows MODE pi pda aos ar BNG ERE NORM PERIOD Range ss LU on ea exea EP PE xis 10m 1 PERIOD Vernier SON ee te 10 Cal POSITION Range si A EA A Au lu POSITION VOI m Ra ia aoa Seo ey a 10 DUTY CYCLE aes pa ets PUN AA Depressed DUTY CYCLE Range 42x44 hoe Aa eer Eden a t DUTY CYCLE Vernier Ro dex AS ut EE E to a AMPLITUDE Range PA ud ER Ss Sy aa dedii 1 3 AMPLITUDE Vernier 0 TA KSI MAK as required INT LOAD A KANG TA TUNOG daturus tide alt SLOPE ura bs tar A DEL ADV DP ee za DELS OUTPUT POLARITY HINA POS don t care rerrormance 1 6515 10 IVIDQE 2146 Measure time between positive going edge of Trigger and positive going edge of Output signal for specifications First with POSITION VERNIER set exactly to 10 VERNIER exactl
31. be energized via an autotransfor mer for voitage reduction make sure that the common terminal is connected to the grounded pole of the power source b The power cable plug shall only b inserted into a socket outlet provided with a protective ground contact The pro tectiveaction must not be negated b y the use of anextension cord without a protective conductor c Before switching on the instrument the protective ground terminal of the instrument must be connected to a protective conductor of the power cable This is verified by checking that the resistance between the instrument chassis and the front panels of all modules in the instrument and the ground pin of the power cable plug is zero ohms 2 11 In accordance with international safety standards this instrument is equipped with a three wire power cable When connected to an appropriate ac power receptacle this cable grounds the instrument cabinet The type of power cable shipped with each instrument depends on the country of des tination Refer to Figure 2 2 for the part number of the power cords available 2 12 If the plug on the cable supplied does not fit your power outlet then cut the cable at the plug end and connect a suitable plug The plug should meet local safety requirements and include the following features Minimum current rating of 4A Ground connection Cable clamp The colour coding used in the cable will depend on the cable supplied see Figur
32. ched TROETASE AND wage wad qe wt Min DELAY Sinon Ten X TREN Cag LA 6 Set 214B PERIOD Vernier to 2 5 MHz and switch to 10 30 V AMPLITUDE range 7 Check that DOUBLE PULSE mode is operating at 2us PERIOD setting vy maving rbd Bi Y Qatar pone f naan ales cuo A WA po BOU PERIOD a Oe Law WA ta us Tm A o SA Y l Lol MIN l A LA TA pai SEPARATION ON a tod 100ns Pipe ee ds Poke 30V 100V RANGE E a La a Ie ego A m qa PA f 4 18 a Mode 2148 Performance Tests PERFORMANCE TESTS 4 17 EXTERNAL MODES TRIGGER GATE BURST E dd SPECIFICATION i Ext Trigger Mode An output pulse is generated for each input pulse Gate Mode Gating signal turns on repetition rate generator First pulse occurs after start of gate signal and last pulse is always completed even if gate ends during generation of last pulse l Burst Mode Preselected number of pulses generated on receipt of trigger signal Number of pulses 1 to 9999 Minimum Spacing between Bursts 200ns EQUIPMENT Pulse Generator Oscilioscope 2x 5012 Feedthrough Tee CAUTION Do not overload Attenuators and Inputs OSCILLOSCOPE Tus tof ji US M PULSE GENERATOR ARA inovator ane oe ff BAGA d LI LL la oo e 10 OO O ing GOUT Pi TRIG QUT 500 INT OR EXT Figure 4 12 1 Connect equipment as shown in Figure 4 12 and set 214B controls as follows MODE aan x voies EXT
33. d WIDTH Range eec y x Pes tu Tu WIDTH Vernier oo eee eee 10 AMPLITUDE Range ces BSA 3 10V AMPLITUDE Vernier uuo ete ken xem EUN as required INT LOAD sian uva ean FN SLOPE rash Se a aa dad DELUNDWVIDIA oca lb be etn ie Pa DEL OUTPUT POLARITY co coccion ees POS EXT INPUT LEVEL HERI as required 2 Set Sinewave Generator to 100 KHz and 300 mV amplitude peak to peak rint mm of center DOS i H S jin Dr E gt OF aha antan A ak Mode 2148 Adjustments ADJUSTMENTS ADJUSTMENT POWER SUPPLY AV 22V 220 mY TPT TPS 3V 10V A4R604 PERIOD AIR69 1000 ps 11 Am im A2R46 99 us 1 Am Tm A2R126 12 5 MHz with VERNIER CCW AEETI POSITION A2R45 1000 us 1 Am im A2R119 100 us 1 96 Am im C DUTY CYCLE LA A2R51 1000us 1 196 1096 A2R217 100 ps 1 11 1 10 WIDTH A2R216 1000 ps 1 im im A2R728 10041 1 4m im MM AA P m AMPLITUDE AiR457i 29V 30 V 100 V A1R462 105V 30 V 100 V Ec sepe A A AA itte 3 MIN WIDTH A1R480 25 ns 25n 1 us PULSE A1R436 max risetime 30 Y 100 V PARAMETERS A1R408 max risetime 30 V 100 V A1R419 max amplitude min overshoot 30 V 100 V AS3CRO01 overshoot ringing 10 V 30 V AT SA flat puls
34. e 2 2 2 1 installation NEMA TYPE ANS 73 H HP Part No 8120 1348 SCHUKO TYPE CEE 7 HP Part No 8120 1689 LINE BLACK NEUTRAL WHITE GROUND YELLOW GREEN LINE BROWN NEUTRAL BLUE GROUND YELLOW GREEN B S 1363 HP Part No 8120 1351 ASC 112 HP Part No 8120 1369 LINE BROWN NEUTRAL BLUE GROUND YELLOW GREEN LINE BROWN NEUTRAL BLUE GROUND YELLOW GREEN Figure 2 2 Power Cables Available Plug Identification 2 13 Operating Environment 2 14 The instrument will operate within specifications when the ambient temperature is between 0 C and 55 C 2 15 FRONT HANDLE RACK MOUNTING 2 16 Figure 1 2 shows the possible handle rack mounting configurations If handles are fitted and subsequentiy need to be removed the plastic trim must first be taken off as shown in Figure 2 3 Lift a corner of the plastic tram with a screwdriver and give a sharp tap In the direction of Ihe arrow Figure 2 3 Removing Plastic Trim Model 214B 2 17 CLAIMS AND REPACKAGING 2 18 Claims for Damage 2 19 If physical damage is evident or if the instrument does not meet specification when received notify the carrier and the nearest Hewlett Packard Sales Service Office The Sales Service Office will arrange for repair or replacement of the unit with _ out waiting for settlement of the claim against the carrier 2 20 STORAGE AND SHIPMENT 2 21 The instrument can be stored or ship
35. e overloaded by the 214B output 3 6 OPERATING MODE 3 7 The 214B operating mode is selected by pressing one of three pushbuttons NORM when rate is determined by the internal generator EXT TRIG when an external trigger source is connected GATE when the internal repetition rate generator needs to be switched on only for the duration of an external gating signal 3 8 A more complete description of these three operating modes is given in the following paragraphs 3 9 NORM MODE 3 39 With this mode selected the frequency is set via the RATE pushbutton row and the calibrated RATE vernier For each pushbutton selection of rate range correspond ing period range is shown to simplify adjustment of pulse position and pulse width i e correct timing is assured when the pulse position and pulse width settings are less than the selected period 3 11 EXT TRIGGER MODE 3 12 With external trigger mode selected a 214B output pulse is generated either by applying an external trigger signal to the EXT INPUT connector or by operation of the MAN pushbutton 3 13 When operating from an external trigger source the trigger signal can be from dc to T0MHz with minimum amplitude 0 5V centred on the trigger level and minimum pulse width TOns The trigger slope is then selectable via the SLOPE slide switch and trigger level adjustable between 5V and 5V via the EXT INPUT LEVEL control NOTE To avoid incompat
36. e top i 10 V 30 V A1R421 flat puise top 10V 30 V A2R506 min ringing 10V 30 V A3C504 opt risetime and ringing 10V 30V A2C514 min ringing 3M 4V FIXED D C A2R197 8 duty cycle 2 du dp Period APA gestae YA KA AA AA io SLOPE A2R19 output with NEG POS SLOPE
37. eased to 10 MHz 1 13 Variable pulse parameters of the 214B include repeti tion rate width delay advance and duty cycle in addition the 214B constant Duty Cycle Mode ensures that duty cycle remains constant with a frequency range thus main taining a constant pulse energy at the output 1 14 User orientated features of the 214B include push button selection for parameter ranges calibrated verniers for continuous setting within these ranges and LED indica tions of timing error and output amplifier overload 1 15 Fora complete description of controls and modes of operation refer to Section HI 1 16 OPTIONS 1 17 214B Option 001 This allows a preselected number of pulses to be generated on receipt of a trigger signal Not retrofittable i 1 18 2148 Options 907 908 and 909 Provides means of rack mounting the 2148 Further details are given in Figure 1 2 General Intormation Model 2146 Table 1 1 Recommended Test Equipment m MM qM 1 QTY INSTRUMENT TYPE RECOMMENDED MODEL REQUIRED REQUIRED CHARACTERISTICS FOR i MEN AAA RA AA nn Rec a e NS MONEMUS io an 3 i T 4 Digital Multimeter i 3465A B 10 1000VDC AC OHM A LT Floating 3 Input E n o frome sina PETEN E A AA pt A AA oe p mon l PEO sqm i 1 Sampling Oscilloscope 180C Main
38. eat ees eene 10n tu POSITION Vernier uu RD er xi a DUTY CYCLE ei mV re ee DUTY CYCLE WIDTH Range esca AMPLITODE Range iaa a dea 3 10 AMPLITUDE Vernier 3 3V INT OA a a Ben gn AR SLOPE feu hehe NG ae N bers SCENES DEI ADVUVIDE utu a a ha a OUTPUT POLARITY senora don t care 2 Measure amplitude and width of trigger signal RESULT Amplitude 2 2 5V from 50 2 into 5092 Width 10ns typical Performance Tests Performance Tests Model 2148 PERFORMANCE TESTS SAMPLING OSCILLOSCOPE Figure 4 11 3 Change Test Setup as shown in Figure 4 11 to check Double Pulse Mode Set 214B l controls as follows CAUTION Do not overload Attenuators and Inputs MODE 45 ax wid ge Poe NA es GAS Se NORM PERIOD Range nacen a e de sea ae Iu iu PERIOD Vernier caw ou esc MuR 5 2 MHz POSITION Range daa Sed eae ee wr lu POSITION Vernlierz cux uou su eae ean faa 2 DUTY CYCLE Ry 24x55 heh Ead UT Released WIDTH Range candidata 25ns tu WIDTH Vernier TTE 2 AMPLITUDE Range sss 30 100 AMPLITUDE Vernier eer ee 50V INT LOAD anar ota ee Released O DEL ABYID oue ea eR E STR ee DOUBLE PULSE OUTPUT POLARITY sonido POS don t care 4 Adjust Sampling Oscilloscope so that both pulses are displayed 5 Turn POSITION Vernier slowly CCW and check that both pulses are still C96 Barnes POLSES displayed when minimum separation 100ns is rea
39. een impaired the instrument must be made inoperative and secured against any unintended operation WARNING Adjustments described herein are performed with power supplied to the instrument while protective covers are removed Energy available at many points may if contacted result in personal injury or death 5 9 EQUIPMENT REQUIRED 5 10 The test equipment required for the adjustment procedures is listed in Table 1 1 Recommended Test Equipment The critical specifications of substitute test instruments must meet or exceed the standards listed in the table if the instrument is to meet the standards set forth in Table 1 2 Specifications Adjustments Model 214B ADJUSTMENTS 5 11 POWER SUPPLY EQUIPMENT Digital Multimeter 10 1000 V DC WARNING High Voltage dangerous to life PROCEDURE Set 214B controls as follows MODE ugue EUR LA RU Ru SUED EXT PERIOD Range A ki PERIOD Vernier enn non n non wan CESPOSIFHON BAanOS Kakai e ed c POSITION Vernier o ki DUTY CYCLE GB ooooooooooo released DUTY CYCLE Range escarpa a DUTY CYCLE Vefhiels a aga NG owe id WIDTH RANGE 23455452444 ita a AMPLITUDE Range sc coca e 3 10 V AMPLITUDE Vernier lt a INT OAD ui ae as e Ya gt SCOPE tad dae a DEL ADV D P n ecw pats ku wee RR OR DEL POLARITY iia dla OA ae we NEG don t care NOTE All voltages are measured with reference ground TP7 1 Measure
40. f the pulse generator using the specifi cations of Table 1 2 as performance standards Ali tests can be performed without access to the interior of the instrument 4 3 EQUIPMENT REQUIRED 4 4 Equipment required for the performance tests is listed in Table 1 1 Recommended Test Equipment Any equipment that satisfies the critical specifications given in the table may be substituted for the recommended model s 4 5 TEST RECORD 4 6 Resuits of the performance tests may be tabu lated on the Test Record at the end of the test procedures The Test Record lists ali of the tested specifications and their acceptable limits Test results recorded at incoming inspection can be used for comparison in periodic main tenance troubleshooting and after repairs or adjustments 4 7 PERFORMANCE TESTS 4 8 The performance tests given in this section are suitable for incoming inspection troubleshooting or preventive maintenance During any performance test all shields and connecting hardware must be in place The tests are designed to verify the published instrument specifications perform the tests in the order given and record the data on the test card and or in the data speces provided at the end of each procedure 4 9 Each test is arranged so that the specification is written as it appears in Table 1 2 Next a description of the test and any special instructions or problem areas are included Each test that requires test equipmen
41. for leading and trailing edges TIMING Repetition Rate 10 Hz to 10 MHz in 6 decade ranges In 30V 100V amplitude range maximum repetition rate is 4 MHz Calibrated vernier provides continuous adjustment within ranges Vernier Accuracy 10 of setting 1 of full scale Period Jitter lt 0 1 300ps Pulse Position Pulse Delay Pulse can be delayed with respect to the Trigger Output from lOns fixed delay to 10ms Fixed delay is 50 ns 10ns Pulse Advance Pulse can be delayed with respect to the Trigger Output from tlOns fixed delay to 10ms Fixed delay is 50 ns 10ns Controls 5 decade ranges with calibrated vernier providing continuous adjust ment within ranges Vernier Accuracy 10 of setting 1 of full scale fixed delay Maximum Pulse Position Duty Cycle gt 50 Position Jitter lt 0 1 SO0ps Pulse Width 25ns to LOms in 6 decade ranges Calibrated vernier provides continuous adjustment within ranges Vernier Accuracy 10 of setting 1 of full scale 5ns Width Jitter lt 0 1 500ps Maximum Duty Cycle 10 for 30 100V amplitude range gt 50 for ail other ranges max 10 ms width Constant Duty Cycle Mode Disabled in External Trigger Mode Duty cycie of output pulse hence output power remains constant when the pulse period is changed in this mode the duty cycle limits are Typically 8 fixed for 10M 1 MHz frequency range max frequency 4 MHz without loss of
42. frame 1810A Ld Flug In 1 GHz Bandwidth P AST j E sasaya EAT ANG PA aa a oo loj i i 1 Oscilloscope 1740A 100 MHz Bandwidth P A EP MEME O emu a IEA TE ma aa TORO S A ta jock MA g it A WA A 1 Counter Timer 53008 Diha PA 150 MHz E ME 5308A e Start Stop Mode 1 Test Oscillator 651 B 10 MHz Sinewave P t ar ASAN reme AK Acidum aa NN AAA AA A RNY aa kaa ma kaa 1 20 dB Attenuator 8491A 20 dB Coax Attenuator 20 dB Coax Attenuator 50W 20 dB Attenuator 50 W Pulse Generator E A NOTE P Performance Check A Adjustment T Troubleshooting Narda 765 20 8012B E is Se A 10 ns Pulse Width isolating Transformer t 4 ma an Model 214B pM mannan knn General Information Table 1 2 Specifications OUTPUT CHARACTERISTICS Pulse Amplitude 0 3V to 100V into 50 ohm 5 ranges with calibrated vernier providing continuous adjustment within ranges Vernier Accuracy 10 of setting Source Impedance Fixed 50 ohm nominal on ranges up to 10V Selectable 50 ohm nominal or high impedance on 10 30V and 30 100V ranges Note with 50 ohm source and load impedance 10 30V and 30 100V ranges reduce to 5 15V and 15 50V respectively Polarity Positive or negative switch selectable Preshoot Overshoot and Ringing lt 5 of pulse amplitude Puise Top Perturbations lt 5 of pulse amplitude Transition Times lt 15ns
43. hen PERIOD setting to avoid timing errors 3 18 When using the MAN pushbutton to generate output pulses the SLOPE slide switch must be set to MAN then 214B output pulses occur for as long as the MAN push button remains pressed Other front panel controls are set to obtain the desired pulse characteristics e g frequency delay width etc 3 19 PULSE POSITION 3 20 The output pulse of the 214B can be delayed or advanced with respect to the trigger output according to the setting of DELAY ADVANCE slide switch In either case the range is selected via the PULSE POSITION push button row and exact setting accomplished via the PULSE POSITION calibrated vernier 3 21 in the event of the selected delay advance being greater than the selected period the TIMING ERROR LED will be illuminated and remain illuminated as long as this error relationship exists Note the TIMING ERROR LED functions only in NORM mode 3 22 For DOUBLE PULSE operation the PULSE POSI TION controls are used to set the delay between the start of 3 2 Model 2148 the first pulse and start of the second pulse In this mode the following timing conditions should be observed for a true output a the pulse position setting less than the selected period Note in this mode range 10n 1u is not specified b the minimum separation between the first and second pulse see figure 3 3 is the minimum setting of the selected pulse position range e g in Im
44. ible timing settings the pulse position and pulse width settings should each be less than the period of the external trigger signal 3 14 When using the MAN pushbutton to generate an out put pulse the SLOPE slide switch must be set to MAN and then a single pulse is generated every time the MAN push button is pressed Other front panel controls are set to obtain the desired pulse characteristics e g pulse position pulse width amplitude 3 1 Uperation 3 15 GATE MODE 3 16 With gate mode selected the internal repetition rate generator is turned on either by applying an external signal to the EXT INPUT connector or by operation of the MAN pushbutton 3 17 Han external signal is applied then pulses occur at the 214B output when a with positive slope selected the external signal is more positive than the selected trigger level selected by EXT INPUT LEVEL control See figure 3 2 b with negative slope selected the external signal is more negative than the selected trigger level See figure 3 2 SELECTED TRIGGER LEVEL 4 GAFE SIGNAL vs j 214B OUTPUT IPOS SLOPE suloctuctt mad IL LL EBD I aa 2148 OUTPUT INEG SLOPE icto zu n AAA AA pk Figure 3 2 214B Outputs in Gate Mode in either case the effective period of the gate signal should be greater than the period selected at the RATE PERIOD controls Also as in NORM trigger mode pulse position and pulse width settings should be less t
45. ino ue apou siu ul esinos 4866112 euto xa Bui32ejes 403 uoxinqusng DIHL LXI 9381 uoh 3edeJ jeu jeu Bunoejes 104 uoxinqusnd WHON 13431 LONE LX3 7 WOW one dB uonBisdo Model 214B Operation SECTION Ill OPERATION 3 1 INTRODUCTION 3 2 This operating section explains the functions of the controls and indicators of the Model 214B Pulse Generator Front and rear panel controls and connectors are identified and briefly described in Figure 3 1 A more detailed des cription of the control and connector functions Is given in the following paragraphs 3 3 SPECIAL OPERATING CONSIDERATIONS 3 4 Prior to operating the Model 214B the operator should familiarise himself with the controls and connectors by reading this section in its entirety 4 L WARNING When operating in the 30 100V amplitude range the output voltage is dangerous to life Care shouid there fore be taken when connecting the 214B to external instruments 3 5 The following steps should be taken before applying power to the 2148 a Read the safety summary at the front of this manual b Be sure the power selector switches are set properly for the power source being used to avoid instrument damage CAUTION Do not change the LINE SELECTOR switch setting with the instrument an or with power connected to the rear panel i c When connecting the 214B to an external device ensure that the device cannot b
46. intain the instrument in a safe condition 1 9 INSTRUMENTS COVERED BY MANUAL 1 10 Attached to the rear of this instrument is a serial number plate Figure 1 3 The first four digits of the serial number only change when there is a significant change to the instrument The fast five digits are assigned to instruments sequentially The contents of this manual apply directly to the instrument serial number quoted on the title page For instru ments with lower serial numbers refer to the backdating infor mation in Section 7 of this manual For instruments with higher serial numbers refer to the Manual Change sheets at the end of this manual In addition to change information the Manual Change sheets may contain information for correcting errors in the manual To keep this manual as up to date and accurate as possible Hewlett Packard recommends that you periodically request the latest Manual Change supplement The supplement for this manual is identified with this manual s print date and part number both of which appear on this manual s title page Complimentary copies of the supplement are available from Hewlett Packard l HEWLETT PACKARD GmbH 1536G 00062 BOBLINGEN Figure 1 3 Serial Number Plate 1 11 DESCRIPTION 1 12 The Model 2148 is a high power pulse generator delivering 200 watts pulse power at up to 4 MHz repetition rate and 15ns or less transition times With reduced power the repetition rate can be incr
47. ipment as shown in Figure 5 4 and set 214B controls as follows MODE ura du E NORM PERIOD Range ost aa 10m 1 PERIOD Vernier e ai kri foie m hn 10 POSITION Range oso tOn tu POSITION Vernier aa kasta 1 DUTY CYCLE dr ow de bas depressed DUTY CYCLE Range 1 1096 DUTY CYCLE Vernier 5 AMPLITUDE Range 30 100V AMPLITUDE Vernier 3 INT LOAD is Oe ry de oko 16 OFF SLOPE Soe Nee V eee atit li DELJADYIDP arcas DEL OUTPUT POLARITY ios POS don t care 2 Set oscilloscope so that one pulse with approx 5 DIV width is displayed on screen 3 Turn A1R462 CW and adjust A1R457 for 29 V output amplitude Adjustments Modei 2148 ADJUSTMENTS 4 Set Amplitude Vernier exactly to 10 and adjust A1R462 for 105 V amplitude a Recheck 29 V and 105 V adjustment and readjust if necessary 6 Select the 10 V 30 V range set vernier to 1 and check that 10 V setting is within 10 96 With vernier fully CCW the amplitude must be lt 10 V Readjust R457 if necessary 7 Select 3 V 10 V range and check that the amplitude is gt 10 V with vernier set i to CW Readjust R462 if necessary l 8 Check Amplitude vernier accuracy in the 30 100 V and 10 30 V ranges as listed below SETTING 30V 100V 10 90V 110V 30V 100V 9 81V 99V 30V 100V 8 72V 88V 30V 100V 7 63V 77V 30V 100V 6 54V 66V 30V 100V 5 45V 55V 30V 100V 4 36V 44V 30
48. le Rack flange with front handie Rack flange Order Option 907 Order Option 909 Order Option 908 H P Part No H P Part No l H P Part No 5061 0089 506 1 0083 5061 0077 Figure 1 2 Available Rack Mounting Accessories Model 214B General Information SECTION I GENERAL INFORMATION 1 1 INTRODUCTION 1 2 This Operating and Service Manual contains informa tion required to install operate test adjust and service the Hewlett Packard Model 214B Figure 1 1 shows the main frame and accessories supplied This section covers in strument identification description accessories specifica tions and other basic information 1 3 A microfiche version of this manual is available on 4 x 6 inch microfilm transparencies order number on title l page Each microfilm contains up to 60 photo duplicates of the manual pages The microfiche package also includes the latest Manual Changes supplement as well as all pertinent Service Notes 1 5 Instrument specifications are listed in Table 1 2 These specifications are the performance standards or limits against which the instrument is tested 1 6 SAFETY CONSIDERATIONS 1 7 The Model 214B is a Safety Class 1 instrument it has an exposed metal chassis that is directly connected to earth via the power supply cable 1 8 This operating and service manual contains informa tion cautions and warnings which must be followed by the user to ensure safe operation and to ma
49. lloscope 20dB Attenuator 20dB Attenuator bOW CAUTION Do not overload Attenuators and Inputs E Connect equipment as shown in Figure 4 8 and set 214B controls as follows Figure 4 8 7 ras MODE PERIOD Range PERIOD Vernier cnica POSITION Range sse o 55 POSITION Vernier DUTY CYGLE J musical Poza WIDTH Baleus Da bu so kw BAGA WIDTH Vernier vue 0 IEEE c aos om w 9 mon AMPLITUDE Range AMPLITUDE Vernier INT LOAD SLOPE DEL ADV D P OUTPUT POLARITY z don t care rona w w or s 9 a mon aw mo w W w kw m n kon 4 a w w n u m w w nou aw SAMPLENG OSCH LOSCOPE Tp1p as required Released 25 1p 30 100 3 30V Released P jen pr 4 3 n 5 ARA pa n RY i py o NN ANTE pw NM KAI An sal d QE a t PUEA OR NENE MCN 1 Voy KO Liso TER ki Pan a va i SU f Cm c poof HE Performance Tests Model 2148 PERFORMANCE TESTS 2 Measure pulse amplitude with INT LOAD pushbutton released and then depressed in 30 100 l and 10 30V AMPLITUDE ranges for specifications listed below o x j a SO arene ke NOTE High source impedance is indicated by LED AP sa AQ per pA 5 AMPLITUDE VERNIER RESULT RESULT l e A a w RANGE SETTING INT LOAD OFF INT LOAD ON y AK pike a Ain UO i pee gt ey P 30 100 27V 33V 13 5V 16 5V pas we i ape ak psi gv odi or aren 90V 110V 45V 55V dz ZIV 33V
50. ped at temperatures between 40 C and 75 C The instrument should be protected from temperature extremes which cause condensation within the instrument 2 22 If the instrument is to be shipped to a Hewlett Packard Sales Service Office attach a tag showing owner return address model number and full serial number and the type of service required The original shipping carton and packaging materia may be re usabie but the Hewiett Packard Sales Service office will also provide information and recommendations on materials to be used if the original packing is not available or re usable General instructions for re packing are as follows 1 Wrap instrument in heavy paper or plastic 2 Use strong shipping container A double wali carton made of 350 pound test material is adequate 3 Use enough shock absorbing material 3 to 4 inch layer around all sides of instrument to provide firm cushion and prevent movement inside container Protect contro panel with cardboard 4 Seal shipping container securely 5 Mark shipping container FRAGILE to encourage care ful handling 6 In any correspondence refer to instrument by model number and serial number uonoel1o4d s0 81ado sjeubis Buneb Aq 188 syw au usamjag 1ueunsn pe snonuijuoo peisnipe oq otutea Aduanb 101 ajgeo amod ayi yBnosya punoib sisseyo 14966143 jeujo1xe 404 101280002 ONG LAdNI 4X3 JO 491UJ9A peie4qi 2 HzINHZA JANJNANY Y 344 PINOYS 1ug1su02 UWS jiM
51. pment as shown in Figure 4 4 and set 214B controls as follows MODE aa Yo Pa AN a mis ird NORM PERIOD Range aaa e o lu 10u PERIOD Vernier Corto a RE kt are po Ae 10 POSITION Range Oda aci 10n tu POSITION Vera a aa 10 DUTY CYCLE Me anal Ped ral d Released WIDTH Range seus Da pie KG Np dut s ane Eae a ao 25n tu WISTRE VEEDIES ada are 25 AMPLITUDE Range ae cda 10 30 AMPLITUDE Vernier 5 2 aou EA See 3 30V TSAO C TE NEN Depressed SLOPE arras Hangal as anto de a DEL ADWIDIB usce ico ie bes amp Gd aa WEE OUTPUT POLARITY Seas e Ad POS don t care 2 Measure pulse width at 50 of amplitude with WIDTH VERNIER set exactly to 25 RESULT 21 5 33 5ns es C5 Fertormmarce 1651s PERFORMANCE TEST 3 Set WIDTH VERNIER exactly to 10 Pulse Width should be 89 116ns 9 4 Select tu du WIDTH range and check da nana with WIDTH VERNIER set to 10 RESULT 890u 1 115us amp With VERNIER set to 1 RESULT 80 ns 126 ns 5 Select lu 1u PERIOD range and set PERIOD vernier to 3 and adjust the Sampling Oscilloscope so that one period is displayed 6 Increase WIDTH duty cycle RESULT Maximum Duty Cycle must be gt 50 before signal disappears and 2148 OVERLOAD LED is illuminated MOURI 145 PIT A DA Am nk XO y FREE PS ban m ey dett Select 25 n 1 u WIDTH range and set OUTPUT AMPLITUDE to 100V 50V pa increase WIDTH and check that Duty Cycle is 10 before 2148 OUTPUT is
52. t has a setup drawing and a list of the required equipment The initai steps of each procedure give control settings required for that particular test Pertormance tests Mode 2146 PERFORMANCE TESTS 4 10 REPETITION RATE VERNIER ACCURACY SPECIFICATION Repetition Rate 10 Hz to 10 MHz in six decade ranges in 30V 100V amplitude range maximum repetition rate is 4 MHz Calibrated vernier provides continuous adjustment within ranges Vernier Accuracy E 10 of setting 1 of full scale EQUIPMENT Counter Timer 50 L Feedthrough 2148 COUNTER TIMER TRIG OUT 5052 FEEDTHROUGH La Figure 4 1 1 Connect equipment as shown in Figure 4 1 and set 214B controls as follows MODE AEREA te di NG AB NORM PERIOD Range ok Aa a od Se Se Pate Ju dg PERIOD Vernier a doen aa dew eco ic eS RC RN 10 POSITION Range Pus e eres to feb ob e cern Se rau 10n tu POSITION Vernier eae 6h a hi kaaa D M 1 DUTY GYOLE 26 ou yi sees S eC AA A aa oy NA gs DUTY CYCLE Range Ga AT n we pots ko peti ma ARA Uh Potes DUTY CYCLE Vernier seraa tawamu tae Mel ewes WIDTH RANGE iia sa laa YS AMPLITUDE Range eet eniro ara 3 10 AMPLITUDE Vernier usur RE Cx e eas 3 INP LOAD iaa a aC OP ai SLOPE uterina aos eon DEUADWDB usa Rete say pla dads E PR POLARITY lt A eee doa de ao a don t care 2 Set counter to Period or Period AVG to get the best resolution Model 2148 Performance Tests PERFORMANCE TESTS
53. transition of 214B output pulse and adjust A2R51 for 1000us 10 duty cycle Adjustments Model 2148 ADJUSTMENTS Set 214B period to 1000us without changing the range and measure time between positive and negative transition Adjust A2R217 for 100ps Set 214B period to 10 OOOus and release DUTY CYCLE pushbutton Select 1m Im WIDTH Range set Width Vernier exactly to 10 and adjust A2R216 for 1000us width Set Width Vernier exactly to 1 and adiust A2R 128 for 100us width Repeat steps 1 to 7 and readjust if necessary Check Vernier Accuracy for 1 10 DUTY CYCLE range and tm 1m WIDTH Range DUTY CYCLE RANGE VERNIER RESULT SETTING 1 1096 Period 10 000us O O on Ooh WN a VERNIER SETTING WIDTH RANGE Am im PERIOD 10 000us COO ON CO UO AUN m Model 214B Adjustments ADJUSTMENTS 5 15 PULSE AMPLITUDE EQUIPMENT Oscilloscope 20dB Attenuator 20dB Attenuator SOW Note lf the amplitude potentiometer R460 has been replaced set the new potentiometer so that the resistance WARNING between the white red grey wire and the white violet wire Hi is 70 S2 Next fit the dial so that the 3 on the light grey igh voltage dangerous to life scale is exactly beneath the arrow 1t may be necessary to slightly readjust the dial when specifications cannot be CAUTION FERRE Do not overload Attenuator or Oscilloscope inputs OSCILLOSCOPE Figure 5 4 PROCEDURE 1 Connect equ
54. ts BURST Mode GENERAL Environmental instrument operates within 09C to 55 C Power Requirements 100V 120V 220V or 240V 5 10 48 Hz to 66 Hz 360VA max Weight Net 13 6 kp 30 1 ib shipping 15 6 kg 34 3 ib Dimensions 133mm high 426mm wide 422mm deep 5 2 x 16 8 x 16 6 inches NOTES 1 Dimensions are for general information only 1f dimensions are required for building spe cial enclosures contact your HP field engi neer A Y 2 Dimensions are in millimetres and inches 3 QJ mmm UN mirrors SOT OE Rem omm e ue H AS AA AENOR L PEE EL ASI LETTESTE OPTIONS Option 001 Burst Presejected number of pulses generated on receipt of trigger signal Number of Pulses 1 to 9999 Option 907 Front Handle Kit part number 061 0089 Option 908 Rack Mounting Kit part number 5061 0079 Option 909 Combined Front Handle and Rack Mounting Kit part number 506 0083 Option 910 Additional Operating and Service Manual Data subject to change a Model 214B installation SECTION li INSTALLATION 2 1 INTRODUCTION 2 2 This section provides installation instructions for the instrument and its accessories It also Includes information about initial inspection and damage claims preparation for use and packaging storage and shipment 2 3 INITIAL INSPECTION 2 4 Inspect the shipping container for damage
55. x DEEADV D ens ot a a ls DEL OUTPUT POLARITY sarria ah See t be POS don t care i T Tis of i et artt amp f i Y Trigger Counter Timer channel A to and channel B to _ Switch to PERIOD and Car v 2 QM yt adjust 2148 PERIOD for exactly 100 0ms ET sA Gal Pusit Dory CYece Irib joey Set 2148 DUTY CYCLE VERNIER exactly to 1 1 and switch Counter Timer to Time Interv A to B RESULT 75 125us prea Eg Set DUTY CYCLE VERNIER exactly to 10 1 and measure pulse width RESULT 840 1160us l Performance Tests l Model 2148 10 TM PERFORMANCE TESTS uo UU LE range on the 214B and check DUTY CYCLE vernier accuracy with PERIOD set exactly to 100 0ms VERNIER SETTING PERIOD 100 0ms 10 8 4ms 11 6ms 100 0ms 9 7 55ms 10 45ms 100 0ms 8 6 70ms 9 30ms 100 0ms 7 5 85ms 8 15ms 100 0ms 6 5 00ms 7 00ms 100 0ms 5 4 15ms 5 85ms 100 0ms 4 3 30ms 4 70ms 100 0ms 3 2 45ms 3 55ms 100 0ms 2 1 60ms 2 40ms 100 0ms 1 75ms 1 25ms Adjust PERIOD to exactly 10ms and check that with DUTY CYCLE vernier set to 1 width is 75us 125pus Model 214B PERFORMANCE TESTS Performance Tests PULSE AMPLITUDE VERNIER ACCURACY SOURCE IMPEDANCE 0 3V to 100V into 50 2 5 Ranges with calibrated vernier providing continuous 4 14 SPECIFICATION adjustment within ranges Vernier Accuracy 10 of setting EOUIPMENT Sampling Osci
56. y set to 1 j VERNIER RESULT SETTING POSITION RANGE 2 93445 AES 8 94 us 11 16 us 89 04 us 111 06 us 890 us 1110 us 8900 us 11100 ps VERNIER SETTING and then with POSITION DE des E RESULT eons P Dns BAO us 1 26 ps 8 04 us 12 06 us 80 us 120 us 800 us 1200 us For checking dial tracking set POSITION VERNIER exactiy to the listed settings and check results A n o saf gt LA baga gh A age Did Ent Tee nf MA oes Rh me POSITION VERNIER RESULT TnT t E RANGE SETTING tm 10m 2 1700 us 2300 us Am3 1 3 3 2600 ys 3400 us 3 tiY 4 3500 us 4500 ps Mo ros 5 4400 us 5600 us B gta 6 5300 us 6700 us Eee M uS 1 6200 us 7800 us 7 4 WF 8 7100 ys 8900 us Y 4 4 9 8000 us 10000 us 1 yo Model 214B Performance Tests PERFORMANCE TESTS 4 12 PULSE WIDTH VERNIER ACCURACY MAX DUTY CYCLE SPECIFICATION WIDTH 25ns to 10ms in 6 decade ranges continuously adjustable by vernier VERNIER ACCURACY 10 of setting 1 of full scale l 10 of setting 1 of full scale bns DUTY CYCLE 2 10 for 30 100V amplitude range 5096 for all other ranges EQUIPMENT Sampling Oscilloscope 20dB Attenuator 20dB Attenuator 50W Tee CAUTION Do not overioad Attenuators and Oscilloscopes Inputs SAMPLING OSCILLOSCOPE WO KEEDEP VI YES memes oF Fi Mesi m E Figure 4 4 1 Connect equi
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