User manual TELEX AUDIOCOM BP-1002 REV H

[. . . ] Printed Circuit Board 3 APPENDIX A OPTIONAL FOOTBALL MODIFICATIONS GENERAL DESCRIPTION In Audiocom® Intercom Systems, the Mic-Kill feature is used to turn off any activated microphones on a selected channel. The Mic-Kill feature is activated when the beltpack receives a 24 kHz signal from the channel. In some applications the Mic-Kill and Call signal features are not desired and need to be disabled. ELIMINATING MIC-KILL AND CALL SIGNAL CAUTION TO PREVENT DAMAGE TO THE EQUIPMENT, THESE MODIFICATIONS SHOULD ONLY BE MADE BY QUALIFIED TECHNICIANS. [. . . ] The yellow indicator next to the 1 or 2 lights to show the active channel. Press the Chan button to change the channel selection, the yellow indicator for that channel will light. CALL BUTTON AND INDICATOR: The Call function allows the user to send or receive signals to other devices on the intercom channel selected. The Call button operates in two ways: CONNECTOR PIN CONFIGURATIONS Headset Connector Type: XLR-4M (callout 6 in Figure 1) Pin 1 Headset microphone low Pin 2 Headset microphone high Pin 3 Headphone high Pin 4 Headphone low Intercom Channel Connectors BP-1002 Type: One XLR-3M and XLR-3F pair (callout 8 in Figure 1) Audiocom® Mode (Internal switch SW1 and jumpers JP4, JP5, JP2 and JP1 set to BAL position) Pin 1 Common Pin 2 Intercom audio low and +24 VDC input Pin 3 Intercom audio high and +24 VDC input Clear-Com Mode (Internal switch SW1 and jumpers JP4, JP5, JP2 and JP1 set to UNBAL position) Pin 1 Common Pin 2 +30 VDC input Pin 3 Intercom audio/call signal BP-2002 Type: One XLR-6M and XLR-6F pair (callout 7 in Figure 1) Audiocom® Mode (Internal switch SW1 and jumpers JP4, JP5, JP2 and JP1 set to BAL position) Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Common Local power (+24 VDC) Channel A intercom audio low and +24 VDC input Channel A intercom audio high and +24 VDC input Channel B intercom audio low and +24 VDC input Channel B intercom audio high and +24 VDC input Call receive: When there is an incoming call signal, the indicator is red. (If Audible Call Alert is enabled, incoming calls will cause beeps in the headset. ) On the BP-2002, calls can be received on the selected channel only. Call send: To send a call signal to all stations on a channel, press and hold the Call button until a verbal response is received. On the BP-2002, calls can be sent on the selected channel only. 4. TALK BUTTON AND INDICATOR: The Talk button activates the headset microphone and operates in two ways: Clear-Com Mode (Internal switch SW1 and jumpers JP4, JP5, JP2 and JP1 set to UNBAL position) Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Common Local power (14 to 30 VDC) Channel A +30 VDC input Channel A intercom audio/call signal Channel B +30 VDC input Channel B intercom audio/call signal 14 7 Table 3. Internal Switches and Jumpers Latched Mode: Tap the button once to talk. Tap the button again when finished with a conversation. Momentary Mode: Press and hold the button to talk momentarily. Release the button when finished talking. NOTE:On the BP-2002, if no headset is connected when the Talk button is pressed, the Talk button will have the same function as the Chan button. SIDETONE CONTROL: When using a headset, this control adjusts your own voice level heard in the headphones. To adjust the level, tap the Talk button once to turn on the headset microphone. Then, use a small flat-blade screwdriver to increase or decrease your voice level while talking into themicrophone. (This control is accessible by removing one screw of belt clip. ) 6. HEADSET CONNECTOR: This connector accepts a four-wire Telex® boom-microphone headset. INTERCOM CHANNEL CONNECTORS: On the BP-2002, intercom channels are connected via a pair of 6-pin connectors (one male and one female). The male and female connectors are wired together in parallel, providing a "loop through" at each connector pin. [. . . ] JP6, JP5 must have pins 2 and 3 shorted at all times. Local Power Input (BP-2002 only) Normally the BP-2002 is powered from the intercom system and will turn on with the intercom system. The BP-2002 belt pack may also be powered from an optional power supply (18-30 VDC) connected between pin 2 (+) and pin 1 (-) of the intercom channel connector. To gain access to the switches, jumpers and the adjustment, disconnect all power and line connections. Remove two screws from the top of each side and two screws from bottom of each side. [. . . ]