AKG Acoustics HT 81 User's Manual
Contents
1. 24 2 Connecting to a Camera and Headphones 24 2 8 Aligning the lt 24 I MENO u PPM EET 24 PART HT 81 HANDHELD 25 1 Description 2 26 5 csl uA lab ge Ani Ra RE GR E SNE RR SE 25 1 1 COMTOIS EM 25 1 2 Interchangeable Microphone 25 2 Setting Up inor rarau abs he wha Ded doa a SR PIS 26 2 1 Selecting the Carrier Frequency 26 2 2 Microphone 26 2 3 Inserting and Testing Batteries 26 24 Color Coder 2 us susce REA UAR 26 PART IV PT 81 BODYPACK TRANSMITTER 27 1 Description 0 6 e 40 cca dena head eee youn da Rn d n 27 1 1 acc C ra Share E Boned 27 1 2 Microphones eme fies haa ete oh Ra e en de 27 2 Setting Up i nuu dno edes de aU d Rode RE M 27 2 1 Selecting the Carrier Frequency 27 2 2 Inserting and Testing Batteries 28 2 3 Connecting and Using 28 24 Color Od ose is noun fa ae e S ote Kot ed Ro E os 28 PART V OPERATING 28 1 Adjusting Transmitter and Receiver 28 1 1 Adjustme2. sition the receiver and or transmitter such that the RF LED 1c will light green 6 The RF LED 1 on the receiver illuminating means no signal is received or the squelch is active Switch the transmitter ON move closer to the receiver or turn the SQUELCH control 1j CCW to the point that the RF LED 16 will light green constantly 1 Be sure to assign a separate carrier frequency to each transmission channel transmitter receiver 2 Set the transmitter and receiver to one of the frequencies marked with in the carrier frequency tables 1n 2h 3k If reception on the selected carrier frequency is disturbed set the car rier frequencies for all channels up or down one or two notches using the respective CHANNEL controls 1k 2g 3f on each transmitter and receiver This is necessary to provide the minimum frequency spacing required for intermodulation free multichannel operation Do not operate two or more channels on the same frequency at the same time and location This would cause unwanted noise due to radio interference Refer to the manual of your camcorder or mixing console Important 1 2 Multichannel Systems Important Important 2 Cleaning Use a soft cloth moistened with water to clean the receiver and transmitter surfaces 29 VI PART VI APPENDIX 1 Troubleshooting Problem Possible Cause Remedy No sound 1 Receiver is OFF 1 Set POWER switch on rece
3. 2e so that on the receiver the AF LEDs 1h will light green and the AF LED 1d on the receiver as well as the status LED 2b on the transmitter will only flash on the loudest signal peaks Bodypack transmitter Using the supplied screwdriver 1m set the GAIN control 3j so that on the receiver the AF LEDs 1h will light green and the AF LED 1d on the receiver as well as the status LED on the transmitter will only flash on the loudest signal peaks 28 PART V OPERATING NOTES V 2 The red AF LED 1hd on the receiver constantly lighting red and or the status LED 2b 3c on the transmitter lighting constantly means the transmitter is overloaded Turn the GAIN control 2e or 3j on the transmitter CCW to the point that the above LEDs will only flash occasionally 3 Set the audio input level on your camcorder or on the mixer channel to which the receiver is connected If the selected input provides phantom power switch the phantom power OFF 4 If unwanted noise becomes audible turn the SQUELCH control 1j CW just enough to suppress the noise The RF LED 1c will light red every time the squelch mutes the audio output of the receiver Never set the squelch threshold higher than absolutely necessary The higher the squelch threshold the lower the sensitivity of the receiver and thus the usable range between transmitter and receiver 5 Check the field strength of the received signal If the RF LED 1c is dark repo
4. ends of the belt clip 1p out of the fixing holes in the receiver side panels 2 To open the battery compartment 11 press down on the arrow symbol on the battery compartment cover 1l and push the battery compartment cover 11 in the direction of the arrow away from the receiver 3 Remove the batteries from the battery compartment 1i 4 Insert the new batteries into the battery compartment 1i making sure to align them with the polarity marks inside the battery compartment 11 If you insert the batteries incorrectly the receiver will not be powered 5 Align the battery compartment cover 11 with the guide grooves on the battery compartment 1i and push the battery compartment cover 1l against the direction of the arrow to the point that the battery compartment cover 11 clicks shut The optional PA 81 supply adapter allows you to power the PR 81 receiver direct ly from an external power supply such as a DC supply output on a camcorder The PR 81 supply adapter has been designed for supply voltages from 5 V DC to PART 11 PR 81 RECEIVER 18 V DC and has a fixed 20 in 50 cm connecting cable with stripped and tinned leads An automatic fuse switches the PA 81 OFF if the supply voltage is shorted The PA 81 requires a maximum power of 1 watt 1 Check that the voltage source on your camcorder provides a voltage between 5 V DC and 18 V DC and sufficient current to satisfy the 1 watt power re quirement of the
5. to mount the receiver on a camcorder The PR 81 operates in a UHF band from 710 MHz to 860 9 MHz using a switching subband that is up to 3 MHz wide Subject to local frequency allocations you can switch the PR 81 to one of up to 15 different carrier frequencies POWER 1 0 on off switch 1b POWER LED indicates battery status LED flashes momentarily on switching power ON and extinguishes batteries are O K LED does not illuminate on switching power ON no or dead batteries are in the battery compartment LED constantly lights brightly batteries will be dead in about 60 minutes 1c RF LED Indicates the field strength of the received signal and the squelch status LED lighting green optimum signal strength LED lighting red the received signal is muted because the squelch is engag ed or the receiver has been set to a different channel than the transmitter LED does not light power to the receiver is OFF no batteries are in the bat tery compartment or the batteries are dead 1d AF LED Indicates the received audio level LED lighting green and flashing red on peaks optimum audio level LED lighting red audio section is overloaded LED does not light audio level is too low 1e Rotary control Sets the volume level of the headphone output 1f Security cover This rotatable cover prevents the POWER switch 1a from being actuated unintentionally The indicator LEDs will remain visible even if the security cover is closed
6. transmitter on The status LED 3c will flash momentarily If the batteries are in good con dition the status LED 3c will continue glowing dimly When the status LED 3c illuminates brightly the batteries will be dead within about 90 minutes Replace the batteries with new ones as soon as possible If the status LED 8c fails to illuminate the batteries are dead Insert new batteries 6 Snap the security cover 3m back over the switches CCW You can wear the transmitter inside a shirt or jacket pocket fix it to your belt with the belt clip 39 Important Make sure the antenna will hang down freely without being covered by the body 2 3 Connecting and 1 Connect your microphone to the audio input 3d Using Microphones 2 For details on how to use your microphone for best results refer to the micro phone instruction manual 2 4 Color Code To replace the black color code platelet 3e on the transmitter with a different color platelet from the optional CC 60 Color Coding Kit 1 Lift the end of the black color code platelet 3e on the top panel of the trans mitter and remove the color code platelet 3e 2 Select a color code platelet of the desired color from the CC 60 Color Coding Kit and snap the selected platelet onto the transmitter V PART V OPERATING NOTES 1 Adjusting the Transmitter and Receiver 1 1 Adjustments 1 Handheld transmitter Using the supplied screwdriver 1m set the GAIN control
7. 860 900MHz A 736 200MHz A 779 400MHz B 860 900MHz B 736 400MHz B 779 600MHz 860 900MHz 736 600MHz C 779 800MHz D 860 900MHz D 736 800MHz D 780 000MHz E 860 900MHz E 737 000MHz E 780 200MHz F 860 900MHz F 737 200MHz F 780 400MHz Set EU62 Set EU63 CHANNEL FREQ CHANNEL FREQ 0 OFF 0 OFF 1 802 525MHz 1 812 775 MHz 2 803 025MHz 2 812 800 MHz 3 803 100 MHz 3 812 825 MHz 4 803 550 MHz 4 813 050 MHz 5 803 575 MHz 5 813 075 MHz 6 803 625 MHz 6 813 100 MHz 7 803 675 MHz 7 813 125 MHz 8 804 775 MHz 8 813 150 MHz 9 804 800MHz 9 813 175 MHz A 804 850 MHz A 813 200 MHz B 805 175 MHz B 813 250 MHz C 805 200 MHz 813 275 MHz D 805 275 MHz D 813 300 MHz E 805 300 MHz E 813 750 MHz F 805 800 MHz F 813 800 MHz DECLARATION OF CONFORMITY Document Nr 180 6 2000 Type of Product Wireless Microphone System Pocket Receiver Brand Model No PR81 Manufacturer AKG Acoustics GmbH A 1230 Wien Lemb ckgasse 21 25 Austria We declare that the above mentioned product is in conformity with the following European Directive No 99 5 EC Radio Equipment and Telecommunications Terminal Equipment The conformity is achieved by fulfilling the following European Standard s ETS 300445 1996 ETS 300445 1997 A1 1995 EN 60950 1992 A1 1993 A3 1995 A4 1997 A11 1997 OVE EN 60950 11 A1 A2 A3 A4 eingearbeitet 1997 11 Product examination was carried out by TUV Osterreich Notified Body 0408 Deutschst
8. Approval marks 1p Belt clip for fixing the receiver on your belt The AUDIO OUT 3 pin mini XLR connector 1r on the receiver top panel provides a fixed level line output and an adjustable mono headphone output The rotary control 1e lets you adjust the volume level of the headphones output The AUDIO OUT connector 1c is wired as follows Pin 1 ground Pin 2 line output fixed level Pin 3 headphone output adjustable In order to avoid overloading the headphone amplifier do not connect head phones with an impedance of less than 16 Q to the headphone output 2 Setting Up 1 2 2 Front Panel 1 2 3 Rear Panel 1 3 Audio Output Important Prior to inserting batteries into the receiver set the transmitter and the receiver to the same carrier frequency The carrier frequency tables on the transmitter 2h 3k and receiver 11 indicate the channel numbers corresponding to the various car rier frequencies 1 Ifthe belt clip 1p is attached to the receiver remove the belt clip 1p first so you can open the battery compartment 11 Use a screwdriver as a lever to lift both ends of the belt clip 1p out of the fixing holes in the receiver side panels 2 To open the battery compartment 11 press down on the arrow symbol on the battery compartment cover 1l and push the battery compartment cover 11 in the direction of the arrow away from the receiver 3 Remove the screwdriver 1m from the battery comp
9. GAN WIRELESS Ee User Instructions Please read the manual before using the equipment Table of Contents Ax Page PART E GENERAL 18 O FCC 18 1 Safety and Environment 18 1 1 GEET 18 1 2 Environment a a 18 2 Description o eege bd e EA EGER SEN 18 2 1 Introduction assise ee a RR UE RET RR 18 2 2 Unpacking WEE 0 E oe e NIAE Ven ae Cn A RON EEN RR 19 2 3 Optional Accessories 19 2 4 20 2 5 Ordering Transmitters and Receivers 20 PART Il PR 81 20 1 Description isss eTa zx OO TR aem NERONE XN WEE 20 1 1 E rp kde td 20 T2 COMMIS cca 2 ah cy Eoo m ep pee Rw Re 20 T3 Audio Output 1 5 EI ele ueber old Penh 21 2 Selling Up 2 uocu e wed eR ARS EET S Dis 21 2 1 Selecting the Receiving Frequency 21 2 2 POWGting Zb MEA Meters m enr he n aoe ina US ET EE 22 23 Mounting the Receiver on a 23 24 Using the Belt 23 25 A dio Connection A sada ireke aber i aee be OE C ere 23 2 6 Connecting
10. PA 81 Also check what type of connector you will need 2 Fix a connector of the type matching your camcorder DC output to the connecting cable of the supply adapter 3 Open the battery compartment 1i 4 Insert the supply adapter into the battery compartment 1i so that the connectng cable will pass through the opening in the bottom panel of the receiver If you insert the supply adapter in a different orientation the receiver will not be powered and you will not be able to close the battery compartment 1i 5 Align the battery compartment cover 11 with the guide grooves on the battery compartment 1i and push the battery compartment cover 1l against the direction of the arrow to the point that the battery compartment cover 11 clicks shut 6 Plug the connecting cable into the appropriate jack on your camcorder If the automatic fuse has switched the supply adapter OFF because the supply voltage has been shorted 1 Unplug the connecting cable from the camcorder 2 Correct the problem 3 Plug the connecting cable into the camcorder jack again 1 Remove the backing from the supplied Velcro strips 2 Attach one of the Velcro strips to the rear panel of the receiver 3 Attach the other Velcro strip to the camera In order to ensure perfect re ception position the Velcro strip so that the antennas 19 on the receiver will protrude above the camera You can fix the belt clip 1p to the receiver in four differen
11. PART 11 PR 81 RECEIVER II 1g Antennas Being a diversity receiver the PR 81 uses two antennas in order to receive the transmitter signal at two different points in space The diversity circuit will automatically activate the antenna that provides the better signal 1h Color code platelet If you use the receiver within a multichannel system you can remove the black plastic platelet and replace it with a different color platelet from the optional Color Coding Kit This allows you to identify the various channels clearly and easily Battery compartment Accepts the supplied 1 5 V dry batteries recharge able batteries of the same size not supplied or the optional PA 81 supply adapter 1j SQUELCH The squelch will mute the receiver if the received signal is too weak so the related noise or the self noise of the receiver will not become audible when the transmitter is switched OFF Set the SQUELCH control to minimum before switching power to the receiver ON for the first time For details refer to Part V section 1 1k CHANNEL This rotary switch selects the desired receiving frequency 11 Battery compartment cover 1m Screwdriver A detachable screwdriver is provided on the inside of the bat tery compartment cover 11 for adjusting the SQUELCH and CHANNEL controls 1 1n Carrier frequency table Sticker indicating the available carrier frequencies and the frequency set for which your receiver has been programmed 1o
12. T 81 operates in a subband up to 3 MHz wide within the 710 MHz to 860 9 MHz UHF carrier frequency range The HT 81 can be switched to a maxi mum of 15 different carrier frequencies depending on local frequency allocations The transmitter uses a dipole antenna integrated in the body The controls can be protected against accidental misadjustment collectively 2d or individually with the supplied adjustable protective ring 2j 2a PWR Switches the transmitter power I and OFF 0 2b Status LED Indicates battery status and audio input overload LED glowing dimly batteries are OK LED constantly lighting brightly batteries will be dead in about 60 minutes LED illuminating brightly audio input is overloaded 2c MIC Mutes the audio signal position 0 while power and carrier frequency remain ON 2d Color Code If you use the transmitter in a multichannel system you can remove the black plastic ring and replace it with a colored ring from the optio nal Color Coding kit to identify each wireless channel by a different color 2e GAIN This rotary pot allows you to match the microphone level to the trans mitter s audio section 2f Battery Compartment Refer to Section 2 Setting Up 2g CHANNEL This rotary switch selects the desired carrier frequency depen ding on local allocations or switches between the carrier frequency and its alternative frequencies Prior to selecting frequencies switch the transmitter OFF 2h Ca
13. artment cover 11 4 Use the screwdriver 1m to set the CHANNEL selector 1k to the desired channel 5 Set the transmitter to the same channel referring to section 2 1 in Part Ill HT 81 Handheld Transmitter or Part IV PT 81 Bodypack Transmitter 2 1 Selecting the Receiving Frequency 21 PART 11 PR 81 RECEIVER Important 2 2 Powering 2 2 1 Inserting Dry or Rechargeable Batteries Note 2 2 2 Replacing Batteries 22 2 2 3 PA 81 Optional Supply Adapter If you wish to set up a multichannel system read section 1 1 Multichannel Systems in Part V first To power the PR 81 portable receiver you can use the supplied 1 5 V AA size dry batteries 1 5 V AA size rechargeable batteries not supplied or the optional PA 81 supply adapter for direct powering from a camcorder 1 Ifthe belt clip 1p is attached to the receiver remove the belt clip 1p first so you can open the battery compartment 11 Use a screwdriver as a lever to lift both ends of the belt clip 1p out of the fixing holes in the receiver side panels 2 To open the battery compartment 11 press down on the arrow symbol on the battery compartment cover 1l and push the battery compartment cover 11 in the direction of the arrow away from the receiver 3 Insert the supplied batteries into the battery compartment 11 making sure to align them with the polarity marks inside the battery compartment 11 If you insert the batteries i
14. ary control 1e to set the volume level for the headphones The line output level is not adjustable For optimum reception point each antenna 1g away from the receiver at an angle of 45 degrees With the antennas aligned like this the diversity function will operate optimally and prevent disturbances such as noise or dropouts most efficiently If you wear the receiver on the belt it makes no difference whether you point the antennas 1g up or down as long as you align them in a V as described above If you mount the receiver on a camcorder align the antennas in the same way and make sure the antennas 1g will protrude above the camera case This will pre vent dropouts due to shadow effects of the camera case To replace the black color code platelet 1 on the receiver with a different color platelet from the optional CC 60 Color Coding Kit 1 Liftthe end of the black color code platelet 1h on the top panel of the receiv er and remove the color code platelet 1h 2 Select a color code platelet of the desired color from the CC 60 Color Coding Kit and snap the selected platelet onto the receiver PART HT 81 HANDHELD TRANSMITTER Ul 1 Description The HT 81 handheld transmitter and matching microphone elements optional provide the same acoustic performance as the equivalent hardwire microphone versions The microphone elements available for the HT 81 have been specifical ly designed for vocal use The H
15. er to the same channel as the transmitter Be sure to switch power to the transmitter OFF every time before chan ging the carrier frequency The new carrier frequency will not be activa ted before you switch the transmitter back ON If you change the carri er frequency while the transmitter is ON the transmitter will remain tuned to the old carrier frequency If you wish to set up a multichannel system read section 1 2 Multichannel Systems in Part V first Prior to switching the transmitter on screw the microphone element CW onto the thread on the transmitter All electrical connections will be made automatically 1 Make sure that the end of the ribbon fixed inside the battery compartment 2f will stick out of the battery compartment 2f The ribbon is needed for remov ing the batteries 2 Insert the supplied batteries into the battery compartment 2f conforming to the polarity marks The transmitter will not function with incorrectly inserted batteries 3 Set the PWR switch to I to switch the power to the transmitter on The status LED 2b will flash momentarily If the batteries are in good con dition the status LED 2b will continue glowing dimly When the status LED 2b illuminates brightly the batteries will be dead within about 90 minutes Replace the batteries with new ones as soon as possible If the status LED 2b fails to illuminate the batteries are dead Insert new bat teries 4 Replace the sup
16. for direct connection to the audio input of the PT 81 C47L 4201 4441 CK77L 2 Setting Up 1 1 Controls Important 1 2 Microphones optional 1 Open the battery compartment 3h All controls are now accessible 2 Use the supplied screwdriver 1m to set the CHANNEL control 3f to the de sired channel 3 Set the CHANNEL control 1k on the receiver to the same channel as the transmitter 2 1 Selecting the Carrier Frequency 27 IN PART IV PT 81 BODYPACK TRANSMITTER Important Be sure to switch power to the transmitter OFF every time before changing the carrier frequency The new carrier frequency will not be activated before you switch the transmitter back ON If you change the carrier frequency while the transmitter is ON the transmitter will remain tuned to the old carrier frequency Important If you wish to set up a multichannel system read section 1 2 Multichannel Systems in Part V first 2 2 Inserting and 1 Open the battery compartment 3h Testing Batteries 2 Insert the supplied batteries into the battery compartment 3h conforming to the polarity marks The transmitter will not function with incorrectly inserted batteries 3 Close the battery compartment 3h The GAIN control 8j remains accessible through an opening in the battery compartment cover 4 Rotate the security cover 3m CW to uncover the switches 5 Set the POWER switch 3a to I to switch the power to the
17. he Belt Clip 2 4 2 Removing the Belt Clip 2 5 Audio Connection 23 PART 11 PR 81 RECEIVER 24 2 6 Connecting Headphones Important 2 7 Connecting to a Camera and Headphones Important 2 8 Aligning the Antennas 2 9 Color Code To connect a pair of headphones to the receiver you will need an optional MK HP adapter cable from AKG This cable provides a mini XLR connector and a TS mini jack for connecting headphones with a mini jack plug In order to avoid overloading the headphone amplifier do not connect headphones with an impedance of less than 16 O to the headphone out put 1 Plug the mini XLR connector on the adapter cable into the AUDIO OUT jack 1r on the receiver 2 Connect the headphones to the mini jack on the adapter cable 3 Use the rotary control 1e to set the volume level for the headphones The optional MK HP C Y cable from AKG lets you connect the receiver to a cam corder or mixing console and monitor the received signal using headphones with a mini jack plug In order to avoid overloading the headphone amplifier do not connect headphones with an impedance of less than 16 O to the headphone out put 1 Plug the mini XLR connector on the Y cable into the AUDIO OUT jack 1r on the receiver 2 Plug the XLR connector on the Y cable into the desired XLR input jack on the camcorder or mixing console 3 Connect the headphones to the mini jack on the Y cable 4 Use the rot
18. help Shielded cables and I O cords must be used for this equipment to comply with the relevant FCC regulations Changes or modifications not expressly approved in writing by AKG Acoustics may void the user s authority to operate this equipment This device complies with Part 15 of the FCC Rules Operation is subject to the following two conditions 1 this device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation 1 Safety and Environment 1 1 Safety 1 Spill no liquids the equipment and do not drop any objects through the ventilation slots in the equipment 2 Do not place the equipment near heat sources such as radiators heating ducts or amplifiers etc and do not expose it to direct sun light excessive dust moisture rain mechanical vibrations or shock 1 2 Environment 1 Be sure to dispose of used batteries as required by local waste dis posal rules Never throw batteries into a fire risk of explosion or garbage bin 2 When scrapping the equipment remove the batteries separate the case circuit boards and cables and dispose of all components in accordance with local waste disposal rules 2 Description 2 1 Introduction Dear Customer Thank you for purchasing an AKG product This Manual contains important instruc tions for setting up and operating your equipment Please take a few minutes to
19. iver to I 2 No batteries inside the trans 2 insert batteries into transmitter mitter and or receiver and or receiver 3 Receiver is not connected to 3 Connect receiver output to mixer or camcorder mixer or camcorder input 4 Audio level control on camcor 4 Turn up audio level control on der or channel fader on mixer is camcorder or channel fader on at zero mixer 5 Microphone is not connected 5 Connect microphone to audio to bodypack transmitter input on bodypack 6 Transmitter operates on diffe 6 Set transmitter and receiver to rent frequency than receiver the same frequency 7 Transmitter on off switch is at 7 Set transmitter on off switch to OFF or MUTE ON 8 Transmitter and or receiver bat 8 Insert batteries conforming to teries are not inserted properly and marks 9 Transmitter and or receiver bat 9 Insert new batteries into trans teries are dead mitter and or receiver 10 Transmitter is too far away 10 Move closer to receiver or turn receiver or SQUELCH control down SQUELCH control set too high 11 Obstructions between trans 11 Remove obstructions from bet mitter and receiver ween transmitter and receiver 12 Receiver is invisible from trans 12 Avoid spots where you cannot mitter location See receiver 13 Receiver is too close to metal 13 Move receiver away from or objects remove interfering objects Noise crackling unwanted signals 1 Antenna loca
20. main ON 3c Status LED Indicates battery status and audio input overload LED glowing dimly batteries are OK LED constantly lighting brightly batteries will be dead in about 60 minutes LED illuminating brightly audio input is overloaded 3d Audio Input 3 pin mini XLR connector with both mic and line level pins that automatically match the connector pinout of the recommended microphones see Part IV section 1 2 Color Code If you use the transmitter within a multichannel system you may remove the black plastic platelet and replace it with a colored platelet includ ed in the optional Color Coding Kit to identify each channel by a different color 3f CHANNEL This rotary switch selects the desired carrier frequency Prior to selecting frequencies switch the transmitter OFF 3g Belt Clip for fixing the transmitter to your belt 3h Battery Compartment Refer to Section 2 Setting Up 3i Antenna Permanently connected flexible antenna 3j GAIN This rotary pot allows you to match the microphone or instrument level to the transmitter s audio section 3k Carrier Frequency Table A label listing the available frequencies is affixed to the transmitter rear panel 31 Frequency Set Designation The label on the rear panel also indicates the designation of the Frequency Set 3m Security Cover Protects the POWER and MIC switches from being actuated unintentionally The following AKG microphones have been designed specifically
21. ncorrectly the receiver will not be powered You may use 1 5 V AA size rechargeable batteries instead of the supplied dry batteries 4 Set the POWER switch 1 to I to switch power to the receiver ON The POWER LED 1b will flash momentarily If the batteries are fully charged the POWER LED 1b will extinguish If the POWER LED 1b begins to light constantly the batteries will be dead in approximately 60 minutes Replace the batteries with new or fully charged ones as soon as possible If the POWER LED 1b does not flash the batteries are dead Insert new bat teries 5 Use the supplied screwdriver 1m to set the SQUELCH control 1j fully CCW minimum For details on setting the SQUELCH control 1j refer to section 1 in Part V 6 Align the battery compartment cover 11 with the guide grooves on the battery compartment 1i and push the battery compartment cover 11 against the direction of the arrow to the point that the battery compartment cover 11 Clicks shut If the POWER LED 1b begins to light constantly and brightly the batteries will be dead in approximately 60 minutes If the POWER LED 1b does not flash on switching power ON or the RF LED 1c extinguishes the batteries are dead Replace the batteries with new or fully charged ones 1 Ifthe belt clip 1p is attached to the receiver remove the belt clip 1p first so you can open the battery compartment 11 Use a screwdriver as a lever to lift both
22. nts tees do ns EE 28 1 2 Multichannel 5 29 2 Cleaning ho oss E EE nnt 29 PART VI 30 1 Troubleshooting 30 2 Specifications lt 1 1221 Hint ais eek Ie er FOAMS du 31 Frequency List 92 17 I PART 1 GENERAL FCC Statement This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Parts 74 15 and 90 of the FCC Rules These limits are designed to provide reasonable protection against harm ful interference in a residential installation This equipment generates uses and can radiate radio frequency ener gy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the follo wing measures e Reorient or relocate the receiving antenna Increase the separation between the equipment and the receiver e Connect the equipment into an outlet on a circuit different from that to which the receiver is connected e Consult the dealer or an experienced radio TV technician for
23. plied protective ring 2j and screw the battery compartment cover back onto the transmitter CW If you prefer to cover all controls permanently reinstall the original unadjustable black plastic ring 2d after adjusting the system as described in Part V section 1 5 Removing batteries Pull the ribbon outward to release the batteries from the battery compartment 2f and remove the batteries If you use the transmitter in a multichannel system you can install a colored pro tective ring from the optional CC 60 Color Coding Kit to identify each wireless channel by a different color These security rings are also adjustable Unscrew the battery compartment cover CCW Remove the protective ring 2j from the transmitter Slide a protective ring of the desired color onto the transmitter Screw the battery compartment cover back onto the transmitter CW PONS PART IV PT 81 BODYPACK TRANSMITTER IV 1 Description E You can use the PT 81 bodypack transmitter with both dynamic microphones and condenser microphones operating on a supply voltage of approx 7 V The PT 81 operates in a subband up to 3 MHz wide of the 710 MHz to 869 MHz UHF carrier frequency range The PT 81 can be switched to a maximum of 15 dif ferent carrier frequencies depending on local frequency allocations 3a POWER Switches the transmitter power ON I and OFF 0 3b MIC Mutes the audio signal position 0 while power and carrier frequency re
24. raBe 10 A 1230 Wien City Date Wien 3 07 2000 Manufacturer s Signature Managing Director Dr Hugo Lenhard Backhaus This declaration certifies the accordance with the above mentioned EC Directive but does not assure certain attributes of the product issued 93
25. read the instructions below carefully before operating the equipment Please keep the Manual for future reference Have fun and impress your audience 18 PART 1 GENERAL I The PR 81 portable receiver is available separately or as a complete system with an HT 81 handheld transmitter or PT 81 bodypack transmitter mN Ji 1 PR 81 receiver 1 mini XLR to XLR connecting cable 1 belt clip 1 screwdriver 2 AA size 1 5 V bat teries Velcro tape for camera mounting m 1 PR 81 receiver with accessories 1 HT 81 handheld transmitter 2 AA size 1 5 V bat teries for the handheld trans mitter 1 SA 43 stand adapter 1 screwdriver 1 carrying case Ki P 4 1 PR 81 receiver with accessories 1 PT 81 bodypack transmitter 2 AA size 1 5 V bat teries for the bodypack trans mitter 1 screwdriver 1 carrying case Please check that the package contains all the components listed above for your system If anything is missing contact your AKG dealer immediately PA 81 supply adapter for supply voltages between 5 V DC and 18 V DC MK HP connecting cable for headphones MK HP C connecting cable for cameras and headphones W 880 foam windscreen for D 880 WL1 W 3001 foam windscreen for D 3700 WL1 and C 5900 WL1 W 23 foam windsc
26. reen for C 535 WL1 CC 60 Color Coding Kit 2 2 Unpacking 2 2 1 PR 81 Receiver 2 2 2 Handheld System 2 2 3 Bodypack System 2 3 Optional Accessories 2 3 1 PR 81 2 3 2 HT 81 19 I PART I GENERAL 2 3 3 PT 81 2 4 Frequencies 2 5 Ordering Transmitters and Receivers CB 40 bag Color Coding Kit The PR 81 portable receiver HT 81 handheld transmitter and PT 81 bodypack transmitter have been factory programmed for up to 15 selectable carrier fre quencies A carrier frequency label on the receiver on the handheld transmitter or on the bodypack transmitter indicates the Frequency Set the unit uses and all available carrier frequencies For currently available Frequency Sets and frequencies suited for intermodulati on free simultaneous operation refer to the Frequency Lists in Part VI If you wish to order additional transmitters or receivers operating on the same set of frequencies as your original equipment be sure to state the designation of your original Frequency Set and the serial number of the original device We need this information to make sure your new equipment will be compatible with the original units PART 11 PR 81 RECEIVER 1 Description 1 1 General 1 2 Controls 1 2 1 Top Panel Refer to section 1 3 Audio Output 20 The PR 81 is a portable diversity receiver you can wear on the belt or in a shirt or jacket pocket You may also use the supplied Velcro fastener
27. rrier Frequency Table A label listing the available frequencies is affixed to the battery compartment 2i Frequency Set Designation The label inside the battery compartment also indicates the designation of the Frequency Set 2j Adjustable protective ring Protects the controls from being misadjusted accidentally The interchangeable microphone elements 2k D 880 WL1 D 3700 WT D 3800 WL1 C 5900 WL1 and C 535 WL1 are acoustically and mechanically identical to the equivalent hardwire versions They feature the same transducer capsules and mechanical construction Extremely high gain before feedback optimum handling noise rejection ultimate protection from damage and an integrated wind and pop screen are only the most impressive features of these microphones For more details refer to the respective AKG brochures 1 1 Controls Important 1 2 Interchangeable Microphone Elements not supplied 25 Ul PART HT 81 HANDHELD TRANSMITTER 2 Setting Up 2 1 Selecting the Carrier Frequency Important Important 2 2 Microphone Element 2 3 Inserting Testing 26 and Removing Batteries Note 2 4 Color Code 1 Unscrew the battery compartment cover CCW and remove the color code ring 2d or 2j from the transmitter All controls are now accessible 2 Use the supplied screwdriver 1m to set the CHANNEL control 2g to the desired channel 3 Set the CHANNEL control 1k on the receiv
28. t ways a On the rear panel pointing down The antennas 19 will be pointing up b On the rear panel pointing up The antennas 19 will be pointing down c Onthe front panel pointing down The antennas 19 will be pointing up d On the front panel pointing up The antennas 19 will be pointing down a Insert the ends of the belt clip 1p into the fixing holes in the side panels of the receiver The belt clip 1p will lock the battery compartment cover 11 2 Clamp the receiver to the belt or a shirt or jacket pocket 3 Point each antenna 1g away from the receiver at an angle of approximately 45 degrees Use a screwdriver as a lever to lift both ends of the belt clip 1p out of the fixing holes in the receiver side panels The supplied connecting cable lets you connect the line output on pin 2 of the mini XLR jack 1r on the receiver to an XLR input on a camcorder or mixing console 1 If the selected input provides phantom power switch the phantom power OFF Refer to the manual of your camcorder or mixing console 2 Plug the mini XLR connector on the connecting cable into the AUDIO OUT jack 1r on the receiver 3 Plug the XLR connector on the connecting cable into the desired XLR input jack Refer to your camcorder manual Refer to section 2 2 2 above Refer to your camcorder manual Important 2 3 Mounting the Receiver on a Camera 1s 2 4 Using the Belt Clip 2 4 1 Attaching t
29. tion 1 Relocate receiver 2 Interference from other wireless 2 Set transmitter and receiver to Systems TV radio CB radios a different frequency switch or defective electrical interfering or defective appliances or installations appliances of or have electrical installation checked Distortion 1 GAIN control is set too high or 1 Turn GAIN control down or up too low just enough to stop the dis tortion 2 Interference from other wireless 2 Set transmitter and receiver to Systems TV radio CB radios a different frequency switch or defective electrical applian interfering or defective ces or installations appliances of or have electrical installation checked Momentary loss of sound drop 1 Antenna location 1 Relocate receiver If dead spots outs at some locations within performance area persist mark and avoid them 30 PART VI APPENDIX VI 2 Specifications d HT 81 PT 81 PR 81 Carrier frequency range 710 to 860 9 MHz 710 to 860 9 MHz 710 to 860 9 MHz Modulation FM FM FM Audio bandwidth 50 to 20 000 Hz 50 to 20 000 Hz 50 to 20 000 Hz Frequency stability 10 C to 50 C 10 ppm 10 ppm 10 ppm Rated deviation 30 kHz 30 kHz T H D at 1 kHz 0 596 0 596 0 896 Compander Yes Yes Yes Signal noise ratio typ 50 dB A typ 50 dB A 2108 dB A RF output 10 mW 10 mW Current consumption 150 mA t
30. yp 180 mA typ Power requirement 2 x 1 5 V AA size 2x 1 5 V AA size 2x 1 5 V AA size batteries batteries batteries Battery life gt 12 hours gt 10 hours gt 6 hours Audio input level for rated deviation 350 mV 1 kHz 1400 mV 1 kHz Input impedance 220 220 kQ 320 pF Condenser mic power supply 6 V 6 8 pin 3 Audio outputs Unbal LINE pin 2 6 dBm 600 Headphone output Pin 3 30 mW typ 16 to 100 Q Size WxDxH length 240 mm 9 4 in 92 x 65 x 20 mm 92 x 65 x 20 mm dia 36 mm 1 4 in 3 6 x 2 6 x 0 8 in 3 6 x 2 6 x 0 8 in Net weight 245 g 8 7 oz 76 g 2 7 oz 80 g 2 8 oz 31 3 Frequenzliste Frequency List Liste des fr quences Elenco delle frequenze Lista de las frecuencias Lista de frequ ncias 92 Set UK69B UKSpot Set US58 Set EU59 CHANNEL FREQ CHANNEL FREQ CHANNEL FREQ 0 OFF 0 OFF 0 OFF 1 858 200MHz 1 734 400MHz 1 777 600MHz 2 860 400MHz 2 734 600MHz 2 777 800MHz 3 860 900MHz 3 734 800MHz 3 778 000MHz 4 860 900MHz 4 735 000MHz 4 778 200MHz 5 860 900MHz 5 735 200MHz 5 778 400MHz 6 860 900MHz 6 735 400MHz 6 778 600MHz 7 860 900MHz 7 735 600MHz 7 778 800MHz 8 860 900MHz 8 735 800MHz 8 779 000MHz 9 860 900MHz 9 736 000MHz 9 779 200MHz A
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