User's Guide

Mute State Output
30 Pin 12 provides an active low TTL output when the receiver’s mute threshold is exceeded. This
output can be used to indicate when a signal is being received.
DPTT
31 Pin 13 provides a delayed PTT that may be required in Have Quick and/or encryption system
applications.
Hardwire PTT
32 Pin 15 provides a connection for keying the transmitter from an external source (for example, a Link
11 modem). A ground potential on this connection will key the transmitter.
Tx Audio 1 and 2 Narrow-band Input
33 Pins 16 and 17 provide a 600 ohm balanced narrow-band audio input. The input can be adjusted in
the range -20 dBm to +10 dBm.
Rx Audio 1 and 2 Narrow-band Output
34 Pins 18 and 19 provide a 600 ohm balanced narrow-band audio output. The output can be adjusted
in the range -20 dBm to +10 dBm.
Link 11 Tx Audio 1 and 2 Input
35 Pins 20 and 21 provide a 600 ohm balanced input. The input can be adjusted in the range -20 dBm
to +10 dBm.
Link 11 Rx Audio 1 and 2 Output
36 Pins 22 and 23 provide a 600 ohm balanced output. The output can be adjusted in the range
-20 dBm to +10 dBm.
BIT Output
37 Pin 24 is a memory fault output that provides a TTL low potential when the BIT detects a transmitter
or receiver fault. This output can be configured as an equipment fault indicator.
Section 3 3000DV2 Radios
Page 12