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Functional Description
The Carrier Squelch Detect (CSQ) and PL Detect (PL) signals from the RX radio, control this feature
as shown in Table 1-4 below:
PL*
0
0
1
1
* Signalled from pin 8 of the Rx radio accessory connector
** Signalled from pin 4 of the Rx radio accessory connector
1.2.9
Wireline Console PTT Timer
This timer defines the maximum duration of PTT from the wireline console.
This timer provides system discipline by limiting the duration of a single conversation.
The timer value is programmable via the RSS.
1.2.10
Wireline Console Re-Key Timer
This timer defines the delay between the de-key from the previous call and the re-key for a new call,
from the wireline console.
If configured this timer prevents airtime being monopolised by the console user.
The timer value is programmable via the RSS.
1.3
Local Control
The TRICK offers limited control capability via its front panel (refer to Figure 1-2). Local control is
applicable to situations where the TRICK is installed on a desk in front of the base station/repeater
operator and is also useful for service engineers, who may wish to temporarily control the TRICK
during testing or system fault finding at the installation site.
The local control capability consists of;
a button (SET-UP) which enables the operator to toggle between repeater Set-Up and
repeater Knocked-Down modes, ie if the repeater is not set up, pressing this button once
selects the Set-Up mode, pressing a second time will exit repeater mode (repeater
Knocked-Down).
a socket provided to allow a service microphone or handset, such as the Motorola HMN3141,
to be connected directly to the TRICK. The microphone or handset may be used for
monitoring traffic and communications with radio operators in the field.
Note:
1-12
Table 1-4 Transmit Inhibit Functionality
CSQ**
0
inhibit wireline audio
1
send guard tone to wireline, inhibit wireline audio
0
not possible
1
valid audio sent to wireline
Audio from the service microphone is not sent to the wireline.
Action
Functional Description & Applications
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