User's Guide

Facilities 2 Connections
21 The facilities 2 connector CN2, fitted to the equipment’s rear panel (refer to Fig. 4), provides a
number of control and monitoring signals that can be configured by the user as required. The connector
pin-outs are detailed in Tables 3-3 to 3-5 and described in the following paragraphs.
22 When making connections to rear panel D-type connector CN2, and in order not to compromise the
equipment’s Electromagnetic Compatibility (EMC), users must:
❏
use a D-type connector that has a screened cover.
❏
use screened multi-way cable, with the cable’s screen connected to the connector’s shell or
body.
Rx Audio 1 and 2, Wideband Output
23 Pins 1 and 2 provide a 600 ohm balanced wideband data output. The output can be adjusted
between -20 and +10 dBm.
Tx Audio 1 and 2, Wideband Input
24 Pins 3 and 4 provide a 600 ohm balanced wideband data input. The input can be adjusted between
-20 to +10 dBm.
Tape Output
25 Pin 5 provides a 600 ohm single-ended audio output for use with suitable tape recording equipment.
The output contains both the transmit and receive audio.
Guard Mute State
26 Pin 6 provides an active low TTL compatible output when the guard receiver’s (if fitted) mute
threshold is exceeded. This output can be used to indicate when a signal is being received.
PTT State
27 Pin 7 provides an active low TTL compatible output on PTT (pin not used if option 06 fitted).
Guard Rx, Audio 1 and 2 Output
28 The guard Rx audio output, available between pins 8 and 9, provides a 600 ohm balanced audio
output from the guard receiver (if fitted).
Input to Receiver Audio Filter
29 Pins 10 and 11 provide an input to the receiver’s audio filter circuits. These inputs are usually used
to route the plain language output from an external encryption unit, to the receiver’s audio frequency
stages. This facility is not available on standard equipments; advice should be sought from PAE if the
facility is required.
3000DV2 Radios Section 3
Page 11