CTI Products TSAM Transmitter Steering & Audio Matrix - Manual (Page 20)

TSAM Installation and Maintenance Rev. 2.10 Chapter 2
CTI Products, Inc. Main Channel Operation
12
2.5.2.2 Repeater Hang Time with EOR Update Mode
For EOR updated modes, the TSAM steers to the proper site for the next transmission when the current
transmission ends. If no site change occurs, the current site remains keyed for the duration of hang time.
If a site change does occur, the current site is unkeyed and the new site is keyed. It remains keyed for the
duration of hang time. When subsequent vote activity starts a repeater transmission, the proper site will
be already keyed. This improves system access time.
2.5.3 RPT Disable Input
When activated, the RPT DISABLE input knocks down any ongoing repeater transmission (including hang
time) and prevents any further repeater transmissions from taking place. When inactive, any vote activity
generates a repeater transmission and keys the steered site. If RPT DISABLE goes inactive after vote
activity ends but during the normal hang time period, hang time is not generated. If RPT DISABLE is
activated during hang time and deactivated before hang time expires, no further hang time is generated.
2.5.4 RPT KEY Output
The TSAM generates a RPT KEY signal for use in systems where transmitter keying is done with external
hardware. In these systems, the RPT KEY signal can be used as the PTT signal for the external transmitter
keying hardware. The TSAM generates this signal so that it has control of the hang time keying
generation.
2.5.5 Repeater Keying Programming Options
Enable Repeater Operation
When this option is enabled, the TSAM generates keying tones whenever vote activity is detected. The
TSAM also generates repeater hang time. If keying tones are disabled, then only the RPT KEY output
becomes active when repeater operation is enabled. Secondary channel operation is not supported with
Repeater Operation enabled.
Enable TSAM Internal Tone Keying
When internal keying tones are disabled, tones are not generated for any Main channel function.
Secondary channel functions still generate all required secondary channel control tones.
Repeater Hang Time
Repeater hang time can be programmed for 0 to 32767 milliseconds, and is normally set so the repeater
transmitter is not dropped during a conversation. For more detail on the operation of Repeater Hang Time,
see section 2.5.2 on page 11.
Resteer Key-up Delay Time
Resteer Key-up Delay forces a delay time between unkeying a base station and then resteering and keying
a new base station. It is programmable from 0-2000 milliseconds. The key-up delay is set long enough so
that the first base completes its unkey sequence. Typically, this delay is as long as 200 milliseconds. This
allows for LLGT detect time and the time for PL reverse burst to be transmitted from the base being
unkeyed. This time can be set to zero if key-up of the second transmitter takes around 200 milliseconds or
if the interference from having two transmitters keyed simultaneously is not objectionable.