Telex Intercom System BP 2000 User Manual

Telex  
Operating Instructions  
1
Chan  
2
Call  
Talk  
BP-2000/BP-1000  
Belt Packs  
®
Audiocom Intercom  
System  
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End-User License Agreement for Telex® Software  
IMPORTANT - Please read this document carefully before using this  
product.  
THIS DOCUMENT STATES THE TERMS AND CONDITIONS UPON WHICH  
TELEX COMMUNICATIONS, INC. (the ‘COMPANY’) OFFERS TO LICENSE  
THE INSTALLED SOFTWARE OR PROGRAM (the ‘SOFTWARE’) FOR USE  
WITH THE PRODUCT IN WHICH IT WAS INSTALLED. YOU ARE AGREEING  
TO BECOME BOUND BY THE TERMS OF THIS AGREEMENT. IF YOU DO  
NOT AGREE TO THE TERMS OF THIS AGREEMENT, DO NOT USE THIS  
PRODUCT. PROMPTLY RETURN THE PRODUCT TO THE PLACE WHERE  
YOU OBTAINED IT FOR A FULL REFUND.  
The installed software as supplied by the Company is licensed, not sold, to you  
for use only under the terms of this license, and the Company reserves all rights  
not expressly granted to you. You own the product or other media on or in which  
the Software is originally or subsequently recorded or fixed, but the Company  
retains ownership of all copies of the Software itself.  
1. License: This license allows you to use the Software for internal purposes  
only on a single product in which it was installed.  
2. Restrictions: (a) You may not market, distribute or transfer copies of the  
Software to others or electronically transfer or duplicate the Software. YOU MAY  
NOT REVERSE ENGINEER, DECOMPILE, DISASSEMBLE, MODIFY,  
ADAPT, TRANSLATE, RENT, LEASE OR LOAN THE SOFTWARE OR  
CREATE DERIVATIVE WORKS BASED ON THE SOFTWARE OR ANY  
ACCOMPANYING WRITTEN MATERIALS. (b) The Software and the  
accompanying written materials are copyrighted. Unauthorized copying of the  
Software, including portions thereof or the written materials, is expressly  
forbidden. (c) You understand that the Company may update or revise the  
Software and in so doing incurs no obligation to furnish such updates to you.  
3. Limited Warranty: The Company does not warrant that the operation of the  
Software will meet your requirements or operate free from error. The Company  
DISCLAIMS ALL OTHER WARRANTIES AND CONDITIONS EITHER  
EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF  
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND  
NON-INFRINGEMENT OF THIRD PARTY RIGHTS.  
4. Limited Liability: The liability of the Company for any claims arising out ot this  
License based upon the Software, regardless of the form of action, shall not  
exceed the greater of the license fee for the Software or $50.  
38109-709 Rev A  
10/97  
2
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OPERATION  
SYSTEM POWER  
The BP-2000 belt pack receives power externally, in one of  
two ways:  
· Via the intercom channel (similar to the BP-1000)  
· Via the local-power (pin 2) of the intercom channel  
connector  
The BP-1000 belt pack receives power externally, via the  
intercom channel.  
Both the BP-2000 and BP-1000 will pass system power  
through to subsequent belt packs that are “daisy chained”  
together.  
INITIAL BP-2000/BP-1000 SETUP  
The channel termination is initially set for balanced operation,  
which is compatible with other Audiocom® equipment. If the  
unit is going to be connected to Clear-Com equipment, one  
switch and several jumpers must be changed as described in  
the section on Clear-Com Setup in this manual.  
The headset microphone type is initially set for single-ended  
dynamic operation. To change the microphone type to  
balanced dynamic, refer to Table 2 for the position of J15.  
To change the headset microphone to an electret type, refer  
to Table 2 in this manual for the position of switch SW1. If the  
type requirement of a headset microphone is unknown, the  
recommended setting is single-ended dynamic.  
3
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1
2
3
4
1
CHAN  
CALL  
TALK  
2
5
BP-2000  
6
7
7
HEADSET  
LINES  
3
1
4
CALL  
TALK  
BP-1000  
5
6
8
8
HEADSET  
LINES  
Figure 1. BP-2000 & BP-1000  
Connections and Controls  
4
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EXTERNAL CONNECTIONS & CONTROLS  
NOTE: The numbers refer to the callouts in Figure 1.  
1. Volume Control  
Use this control to adjust the headset listen level.  
2. Chan Button and Indicators  
The Chan button (only on the BP-2000) allows the user to  
select which intercom channel is active. 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.  
3. 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:  
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-2000, 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. The indicator will glow red. On the BP-2000,  
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:  
5
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Latched Mode:  
Tap the button once to talk. The indicator will glow  
green. 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-2000, if no headset is connected  
when the Talk button is pressed, the Talk button will  
have the same function as the Chan button.  
5. 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 the  
microphone. (This control is accessable by removing one  
screw of belt clip.)  
6. Headset Connector  
This connector accepts a four-wire Telex® boom-  
microphone headset.  
7. Intercom Channel Connectors  
On the BP-2000, 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. Use  
one connector to connect to the intercom channel. Use  
the other connector to “daisy chain” a cable to the next  
belt pack or other station on the channel.  
6
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Local Power Input (BP-2000 only)  
Normally the BP-2000 is powered from the intercom  
system and will turn on with the intercom system. The  
BP-2000 belt pack may also be powered from an optional  
power supply (14-30 VDC) connected between pin 2 (+)  
and pin 1 (-) of the intercom channel connector.  
8.  
@PARAINDENT = Intercom Channel Connectors  
On the BP-1000, the intercom channel is connected via a  
pair of 3-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. Use  
one connector to connect to the intercom channel. Use  
the other connector to “daisy chain” a cable to the next  
belt pack or other station on the channel.  
OPERATING MODES  
The microprocessor within the BP-2000/BP-1000 controls four  
modes of operation that affects the Microphone Kill and  
Audible Call Alert features.  
TABLE 1. OPERATING MODES  
MODE  
(beeps)  
MIC KILL  
AUDIBLE  
CALL ALERT  
1
Disabled  
Disabled  
Disabled  
Enabled  
Enabled  
2 (Default)  
Enabled  
Disabled  
Enabled  
3
4
Changing Modes of Operation:  
Perform the following steps to change the mode of operation.  
1. Both the Talk and Call indicators should be off.  
7
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2. Press and hold the Talk key, then press and hold the Call  
key, then release both keys. The Call indicator should  
now glow red.  
(The number of beeps heard in the headset indicates the  
current mode of operation.)  
3. Press the Call key to change to the next mode of  
operation. Each press of the Call key will cause the  
BP-2000/BP-1000 to change to the next mode of  
operation.  
4. When the desired mode is reached, press the Talk key to  
select that mode and exit the mode changing function.  
(Beeps will be heard in the headset when the mode  
changing function is exited. The number of beeps heard  
indicates the selected mode of operation.)  
NOTE: Each time the intercom system power is turned  
on, the beltpack will reset to the default mode of  
operation (Mode 2).  
8
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INTERNAL SWITCHES, JUMPERS AND ADJUSTMENTS  
There are several internal switches, jumpers and an  
adjustment that affect operation. These are described below.  
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. Switch, jumper and adjustment locations are  
shown in Figure 2.  
B
U
EL  
3 2 1  
J4  
DYNSW1  
1 2 3  
J15  
J3  
1 2 3  
BAL  
3
2
1
J5  
J1  
J6  
UNBAL  
SW4  
SW2  
SW5  
Figure 2. Internal Switches, Jumpers and Adjustments  
NOTE: Figure 2 shows a BP-2000 with the switches and  
jumpers in their factory default positions (referenced in  
Table 2).  
The SIDETONE adjustment is also accessible behind the  
screw that holds the belt clip (callout 5 in Figure 1).  
The functions of the internal switches and jumpers are  
described in Table 2.  
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NOTE: On the BP-1000, jumper J3 must always have  
pins 2 and 3 shorted.  
Side Tone Adjustment (R19)  
The side tone adjustment is accessible either internally (refer  
to Figure 2) or by removing the belt clip mounting screw  
(callout 5 in Figure 1).  
To adjust the level of your own voice heard in the headphones,  
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 the microphone.  
Clear-Com Setup  
Make the following switch and jumper changes when the belt  
pack is used with Clear-Com equipment:  
BP-2000  
1. SW3 must be placed in the UNBAL position.  
2. J2 must have pins 1 and 2 shorted (U position).  
3. J5 jumper must be removed and placed on J6.  
4. J6 must have pins 1 and 2 shorted (using jumper from J5).  
5. J7 must have pins 1 and 2 shorted.  
BP-1000  
1. SW3 must be placed in the UNBAL position.  
2. J2 must have pins 1 and 2 shorted (U position).  
3. J3, J5 must have pins 2 and 3 shorted at all times.  
10  
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TABLE 2. INTERNAL SWITCHES AND JUMPERS  
JUMPER/  
SWITCH  
NUMBER  
JUMPER OR SWITCH FUNCTION  
DEFAULT  
SETTING  
SW1  
^
Electret / Dynamic Microphone Select  
(Must be set to Dynamic when J15 func-  
tions are desired)  
Dynamic  
J15  
^
Balanced/ Single-ended Dynamic Mic  
(SW1 must be set to Dynamic)  
Pins 1&2  
shorted  
^
^
J3  
^
^
^
J5  
^
Single-ended Mic: Pins 1&2 shorted  
Balanced Mic: Pins 2&3 shorted  
Power Select  
Channel One Power: Pins 2&3 shorted  
(On BP-1000, pins 2&3 always shorted)  
Channel Two Power: Pins 1&2 shorted  
Power Select  
Channel One Power: Pins 2&3 shorted  
(On BP-1000, Pins 2&3 always shorted.)  
Channel Two Power: Pins 1&2 shorted  
(Must be set for same channel as J3 for  
proper power operation in Audiocom®  
mode on BP-2000)  
Pins 2&3  
shorted  
Pins 2&3  
shorted  
^
^
^
(Must be used in conjunction with SW3)  
Clear-Com / Audiocom® Operation  
Unbalanced / Balanced Line  
(Must be used in conjunction with  
J2, J5, J6, and J7)  
SW3  
^
^
Balanced  
J2  
^
^
^
J6  
Clear-Com / Audiocom® Operation  
Pins 1&2 shorted: UNBAL (Clear-Com)  
Pins 2&3 shorted: BAL (Audiocom®)  
(Must be used in conjunction with SW3)  
DC Call Detect (Clear-Com operation only,  
not used in Audiocom® mode) BP-2000 only  
Disabled: No pins jumpered  
Pins 2&3  
shorted  
No jumper  
present  
^
^
Enabled: Pins 1&2 shorted  
^
J7  
(To enable, use jumper from J5)  
DC Call Detect (Clear-Com operation only,  
not used in Audiocom® mode) BP-2000 only  
Disabled: No pins jumpered  
Jumper on  
one pin  
only  
^
^
Enabled: Pins 1&2 shorted  
11  
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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-1000  
Type: One XLR-3M and XLR-3F pair (callout 8 in Figure  
1)  
Audiocom® Mode (Internal switch SW3 and jumpers  
J2,  
J5, J6 and J7 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 SW3 and jumpers  
J5, J6 and J7 set to UNBAL position)  
Pin 1 Common  
J2,  
Pin 2  
+30 VDC input  
Pin 3 Intercom audio/call signal  
12  
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BP-2000  
Type: One XLR-6M and XLR-6F pair (callout 7 in Figure  
1)  
Audiocom® Mode (Internal switch SW3 and jumpers  
J5, J6 and J7 set to BAL position)  
Pin 1 Common  
J2,  
Pin 2  
Local power (+24 VDC)  
Pin 3 Channel A intercom audio low and  
+24 VDC input  
Pin 4 Channel A intercom audio high and  
+24 VDC input  
Pin 5 Channel B intercom audio low and  
+24 VDC input  
Pin 6 Channel B intercom audio high and  
+24 VDC input  
Clear-Com Mode (Internal switch SW3 and jumpers  
J5, J6 and J7 set to UNBAL position)  
Pin 1 Common  
J2,  
Pin 2  
Local power (14 to 30 VDC)  
Pin 3 Channel A +30 VDC input  
Pin 4 Channel A intercom audio/call signal  
Pin 5 Channel B +30 VDC input  
Pin 6 Channel B intercom audio/call signal  
13  
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SPECIFICATIONS  
GENERAL:  
Power Requirements:  
Channel supplied: 24 VDC nominal, 45 to 70 mA  
Local-power: (BP-2000 only) 24 VDC nominal  
(14 to 30 VDC), 45 to 70 mA  
Environmental Requirements:  
Storage: -20ºC to 80ºC; 0% to 95% humidity,  
non-condensing  
Operating: -15ºC to 60ºC; 0% to 95% humidity,  
non-condensing  
Dimensions:  
5.0" (127 mm) H x 3.5" (88.9 mm) W x 1.8" (45.7 mm) D  
Weight:  
1.5 pounds (0.68 kg)  
INTERFACE REQUIREMENTS:  
Headset:  
50 to 200W dynamic microphone  
150 to 600W headphones  
Balanced Intercom Channel:  
Output Level: 1 Vrms nominal  
Input Impedance: 300W 5%  
Bridging Impedance: greater than 10,000W  
Call Signalling:  
Send: 20 kHz 100 Hz, 0.5 Vrms 10%  
Receive: 20 kHz 800 Hz, 100 mVrms  
Mic-Off Frequency:  
Detect: 24 kHz 800 Hz, 100 mVrms  
Noise Contribution: less than -60 dB on the line  
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Unbalanced Intercom Channel:  
Output Level: 200 mVrms 10%  
Input Impedance: 150W 5%  
Bridging Impedance: greater than 10,000W  
Call Signalling:  
Send: 12 3 VDC  
Receive: 4 VDC minimum  
HEADPHONE AMPLIFIER:  
Voltage Gain:  
27 3 dB from the line  
Maximum Output:  
60 mW into 150W  
Frequency Response:  
200 Hz to 8 kHz with no more than 4 dB deviation  
Audible Alert:  
1 kHz, at the headset  
Total Harmonic Distortion:  
Less than 2% at 50 mW from the line  
Sidetone:  
20 dB minimum range, adjustable  
15  
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DYNAMIC MICROPHONE AMPLIFIER:  
Voltage Gain:  
Mic to Channel; 45 3 dB, before limiting  
Mic to Headphone; adjustable, 65 dB range into 150W  
Frequency Response:  
200 Hz to 8 kHz +1/-3dB  
Total Harmonic Distortion:  
Less than 1% at Channel output at 1 kHz  
ELECTRET MICROPHONE AMPLIFIER:  
Voltage Gain:  
Mic to Channel; 27 3 dB, before limiting  
Mic to Headphone; adjustable, 45 dB 10% into 150W  
Frequency Response:  
200 Hz to 8 kHz +1/-3dB  
Total Harmonic Distortion:  
Less than 1% at Channel output  
16  
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FACTORY SERVICE  
All equipment returned for repair must be accompanied by  
documentation stating your return address, telephone number  
and proof of date of purchase, along with a description of the  
problem. In lieu of this, you may obtain a Return  
Authorization form from our Customer Service Department.  
Customer Service Department  
Telex Communications, Inc.  
12000 Portland Avenue South  
Burnsville, Minnesota 55337 U.S.A.  
Telephone: (9552) 884-4051  
(Collect calls not accepted)  
Return equipment to:  
Service Department  
Telex Communications, Inc.  
West 1st Street  
Blue Earth, Minnesota 56013 U.S.A.  
Warranty Repairs - If in warranty, no charge will be made for  
the repairs. Equipment being returned for warranty repair  
must be sent prepaid and will be returned prepaid.  
Non-Warranty Repairs - Equipment that is not under warranty  
must be sent prepaid to Telex. If requested, an estimate of  
repair costs will be issued prior to service. Once your  
approval for repair, and repair of equipment is completed, the  
equipment will be returned on a collect basis. Collect charges  
may be avoided by sending a signed check for payment in full  
along with your signed estimate approval form (the estimate  
includes the shipping charge).  
17  
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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.  
If desired, the Mic-Kill and Call signal features can be disabled  
in the BP-2000/BP-1000 by removing a surface-mounted  
capacitor from the printed circuit board. Perform the following:  
1. Before making changes to the printed circuit board,  
disconnect all power and line connections from the  
beltpack.  
2. Refer to Figure 3 and locate C38 on the underside of the  
printed circuit board.  
3. Remove capacitor C38 from the printed circuit board.  
RESTORING MIC-KILL AND CALL SIGNAL  
To restore the Mic-Kill and Call signal features, replace C38  
with Telex® part number 102879-218, 1500 pF, 50V  
capacitor.  
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