Telex WM2000 User Manual

1 6

Au d i o c o m ®

Pair

Denotes twisted pair.

Denotes shield.

Channel 1 Audio low / Power

Shield*

DC Common

Shield*

TO POWER

SUPPLY CONNECTOR

TO ADDITIONAL

SINGLE- OR TWO-CHANNEL STATIONS

Cable Type: 22AWG Stranded, 3-Pair Twisted-wire, with Shield

Channel 2 Audio low / Power
Channel 2 Audio high / Power

OPTIONAL LOCAL

POWER SOURCE

12 to 15 VDC, 65 to 150 mA

+ DC

COMMON

Channel 1 Audio high / Power

*Shield: Earth ground (Connect at power supply only.

Do not short to DC common)

PIN 1

Figure 7. Audiocom mode connections for a WM2000 Intercom Station

Resistors 300 Ohm, 1/4W

Capacitors 22 f, 35V
Non-polarized Electrolytic

Channel audio low

Channel audio high

Common

Figure 8. Audiocom mode line termination for dry-line operation. (One required for
each channel.)