Operating instructions

31
transmissions. The Hang Time can be individually set on each channel for 0 - 999
seconds.
Time Out Timer -
A time-out or transmission time limit can be programmed to
automatically turn the transmitter off. The time limit can be set from 0-10million
seconds. The timer is automatically reset when the PTT input is released. Zero seconds
disables the timer, and allows continuous transmission.
7.4.22 CTCSS
CTCSS tones can be provided by an internal encoder or by an external source connected
to the external tone input. The internal CTCSS encoding provides programmable
encoding of any tone, accurate to 0.1Hz, including all EIA tones, from 67.0Hz to
257Hz.
7.4.23 DCS codes
DCS codes can be generated. The 9 bit DCS codes can be specified as a 3 digit octal
number and individual codes can be assigned to each channel. The exciter computes the
23 bit golay code for each DCS code, which is then continuously transmitted as NRZ
data at a bit rate of 134.4 bits per second when the exciter has keyed up. This feature is
only available from Rev. 4 units or later revisions.
7.4.24 CWID
CWID messages are transmitted as
Morse Code streams.
The transmit rate is a nominal
20 words per minute. Each “dot” is a burst of 1028Hz tone at a deviation level of
1.5kHz for 60ms. Each “dash” is the same tone, at the same level for 180ms.
7.5 Connectors
7.5.1 RF Output Connector
BNC connector on the module rear panel.
7.5.2 Power & I/O Connector
25-pin “D” Female Mounted at the top of the rear panel
7.5.3 External Reference Connector (optional)
BNC connector mounted in the middle of the rear panel connector.