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BP-325

Connections And Operation  5

6.

Sending a Talk-off Signal: The BP325 can generate an inaudible signal which can be used to deactivate the talk buttons on other 
intercom stations connected to an intercom channel. (May be used with models BP325, MCE325 and MRT327). This feature is 
useful when an unattended intercom station has its microphone activated and is causing noise on an intercom channel. To send a 
talk-off signal:

a.

Turn off both TALK buttons on the BP325.

b.

Tap the CALL button three quick taps. The red call LED will turn on for about 2 seconds.

c.

While the red call LED is on, momentarily press the TALK button for the channel that has the TALK button to be 
turned off. This will send the signal and turn off the remote TALK button.

Programmable Options

 Several internal option switches and jumpers can modify the belt pack’s operation. The factory settings are summarized below. To change 
any of the factory settings, remove the rear cover screws as shown in Figure 1. Jumper and switch locations are shown on the label inside the 
rear cover.

Factory Settings

TABLE 1. 

BP-325 Unit Jumper Settings - This equipment complies with the requirements in Part 15 of the FCC Rules for a Class A 

computing device. Operation of this equipment in a residential area may cause unacceptable interference to radio and TV reception 
requiring the operator to take whatever steps are necessary to correct the interference.

TRS JACK FUNCTION

EXT

MIC

SW

CARB

MIC

HOST

W7

SW 1 CALL SIGNAL DISABLE

SW 2 MOMENTARY ONLY CH 2

SW 3 TALK 2 DISABLE

SW 4 TALK 1 DISABLE

SW 5 MOMENTARY ONLY CH 1

SW 6 TALK OFF TRANSMIT ENABLE

SW 7 NOT USED

SW 8 TALK OFF RECEIVE ENABLE

1

2

3

4

5

6

7

8

ON

S1

W1

THRU

W4

ON

W4

W3

W2

W1

W5

W5

PGM RIGHT

PGM LEFT

CH 2 LISTEN

CH 1 LISTEN

MONO

STEREO

BAL2

R52

BAL1

R39

MONO 4-PIN

HEADSET

STEREO 5-PIN

HEADSET

INTERCOM

INPUT

INTERCOM

LOOP

PGM INPUT

REMOTE MIC SW/

LOCAL POWER

J2

J3

J7

J6

J4

J5

1

1

1

1

1

Summary of Contents for 9010673800

Page 1: ...F 01U 385 482 Rev 14 MARCH 2020 II I MODEL BP 325 Belt pack Intercom Station User Manual...

Page 2: ...is subject to change without prior notice and shall not be construed as an expressed or implied commitment on the part of the manufacturer This package should include the following Qty Description Pa...

Page 3: ...ur outlet consult an electrician for replacement of the obsolete outlet 10 Protect the power cord from being walked on or pinched particularly at plugs convenience receptacles and the point where they...

Page 4: ...4 BP 325...

Page 5: ...ections 3 Headset 3 Intercom Channels 3 Operation 4 Programmable Options 5 Factory Settings 5 Jumpers W1 W7 6 Sidetone Adjustment 7 Alternate Powering Methods 7 Method One One Channel Operation With A...

Page 6: ...Bosch Security Systems Document Type 2 Book Title Rev F 01U XXX XX...

Page 7: ...a headset using one of the three headset connectors on the back panel The MONO HEADSET and STEREO HEADSET connectors are for monaural or stereo dynamic mic headsets The CARB MIC HEADSET connector is...

Page 8: ...ng the belt clip on the rear panel 2 Put on the headset and adjust the listen volume controls while listening to the intercom channels 3 A TALK button may be activated in either of two ways Momentary...

Page 9: ...tory settings are summarized below To change any of the factory settings remove the rear cover screws as shown in Figure 1 Jumper and switch locations are shown on the label inside the rear cover Fact...

Page 10: ...eadphone only and channel 2 will be heard only in the right In the mono posi tion both intercom channels and program audio if connected will be heard in both headphones If you are using monaural headp...

Page 11: ...el terminating components to the LINE INPUT connector as shown in Figure 2 If desired the LINE LOOP connector may be used to connect power and audio to an additional intercom station FIGURE 1 LINE INP...

Page 12: ...isconnect them Remove the back connector panel and main circuit board from the belt pack 3 On the bottom side of the main circuit board cut the trace as shown in Figure 3 4 Reassemble the main circuit...

Page 13: ...BP 325 Connections And Operation...

Page 14: ...10 Connections And Operation BP 325...

Page 15: ...aximum Input Level 20 dBu Nominal Input Level 10 to 8 dBu Frequency Response 100 Hz to 12 kHz 3 dB Monaural Dynamic mic Headset Connector XLR 4 31 receptacle J13 Pin 1 Microphone low Pin 2 Microphone...

Page 16: ...Bosch Security Systems Inc 12000 Portland Avenue South Burnsville MN 55337 U S A www rtsintercoms com...

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