Bogen-PCMTBM-Operation-Manual 电路图 维修手册.pdf

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1、Bogen Model PCMTBM Talkback Module for Bogens PCM2000 Zone Paging System DELAY VOLUME TALKBACK REDUCTION NOISE OFF ON IN RT PA PA RT OUT PCM TBM POWER 2000 Bogen Communications, Inc. Part No. 54-5948-01R2 0009 50 Spring Street, Ramsey, NJ 07446 Tel. 201-934-8500, Fax: 201-934-9832 Web Site: / E-mail

2、: RadioFans.CN 收音机爱 好者资料库 PCMTBMPCMTBM Description The Bogen Model PCMTBM is the talkback applications module for the Bogen PCM2000 Zone Paging System.The PCMTBM is used with a high-power central amplifier to provide talkback paging in zones with passive speakers.The module is equipped with controls

3、 to adjust talkback volume and talkback delay.A noise reduction switch mutes background noise when no audio activity is present in the zone. The PCMZPM zone module has TALKBACK dip switches which must be prop- erly set in order to use the PCMTBM module.See the instructions supplied with the PCMZPM m

4、odule for further information. Amplifier Connections When using the PCMTBM module,connect the central amplifier input to PA IN & RT terminals,and amplifier output to PA OUT & RT terminals.See the illustra- tion on page 3. The central amplifier should have no connections to the PCM- CPU module when u

5、sing this talkback module. NOTE: No connections should be made between the paging amplifier and the PCM- CPU module.The paging amplifier must only be connected to the PCMTBM module. Talkback Volume Control TALKBACK VOLUME controls the loudness of the talkback signal in the tele- phone handset. Clock

6、wise rotation increases the talkback level. Talkback Delay Control The TALKBACK DELAY controls the amount of time the unit stays in the broad- cast mode (when paging is heard over the zone speakers). Once the paging sig- nal stops, the unit will switch into talkback mode (listen through the speaker)

7、 after this delay has lapsed. Clockwise rotation of the control increases the talkback delay. Noise Reduction Switch When the NOISE REDUCTION switch is placed in the ON position, the PCMTBM has the ability to mute background noise in the zone being monitored. When audio activity in a zone is not cha

8、nging significantly, the PCMTBM will CLASS 2 WIRING ACCEPTABLE GNDCOM25VCT25V16 70V AMPLIFIER ALC TEL VOLUME MIC VOLUME MUSIC VOLUME MUSIC MUTE RINGER VOLUME RING TELTEL BAL MIC GNDRING CONTACT + BAL TR TELMICCOM CONTROLS MUSIC IN BRIDGING PCM TBM POWER VOLUME TALKBACK DELAY OUT RT IN RT PA PA NOISE

9、 REDUCTION ON OFF consider this audio to be background noise.The module will then mute the talk- back channel.When voice is detected, the talkback channel will be immediately reinstated. By placing the switch in the OFF position, the talkback channel will not mute regardless of the audio activity in

10、 the zone. 23 Amplifier Connections RadioFans.CN 收音机爱 好者资料库 Bogen Model PCMTBM Talkback Module for Bogens PCM2000 Zone Paging System DELAY VOLUME TALKBACK REDUCTION NOISE OFF ON IN RT PA PA RT OUT PCM TBM POWER 2000 Bogen Communications, Inc. Part No. 54-5948-01R2 Printed in Korea. 0009 50 Spring Street, Ramsey, NJ 07446 Tel. 201-934-8500, Fax: 201-934-9832 Web Site: / E-mail: RadioFans.CN 收音机爱 好者资料库