Datron TW7000MS, Technical Manual

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2: Installation
2-2 TW7000MS
2.3.2
Vehicular or
Marine
To operate the TW7000 in a particular vehicle or shipboard location, DWC
offers rack, mobile and shock mount kits suitable for most installations.
2.4 Front Panel Connections
Two 6-pin microphone connectors on the front panel are wired in parallel and
suitable for use by various audio accessories. Low-level audio accessories for
use with the TW7000 include the following:
The input impedance is a nominal 150 ohm. Most dynamic, ceramic, or
magnetic microphones operate satisfactorily with the TW7000. All DWC-
supplied audio accessories have the correct mating connector on them. To use
other low-level audio accessories, the correct mating connector can be
obtained from DWC. The pin assignments for the two connectors are as
follows:
2.5 Rear Panel Connections
The rear panel of the TW7000 is fabricated from aluminum sheet metal and
attached to the rear panel bezel by 6 screws. The pattern of punched holes on
right-side is the air intake for the internal heat sink. The left-side hole pattern
Part Number Description
PM Heavy-duty palm microphone
DM Dynamic desk microphone
KEY Morse key
EP Headphones
EPL Lightweight headphones
Pin Number Description
1 Ground
2 RX audio (unmuted)
3 PTT
4 TX audio
5 CW key line
6 +12 Vdc