User's Manual
Table Of Contents
- 1 REGULATORY AND SAFETY INFORMATION
- 2 PREFACE
- 3 SPECIFICATIONS
- 4 GENERAL INFORMATION
- 5 OPERATION
- 5.1 CONVENTIONAL STATION CONFIGURATIONS
- 5.2 ENCRYPTED STATION CONFIGURATIONS
- 5.3 MODES OF OPERATION
- 5.4 ENCRYPTION FORMATS
- 5.5 P25 CONVENTIONAL CONFIGURATIONS
- 5.6 PROGRAMMABLE FEATURES FOR CONVENTIONAL STATIONS
- 5.6.1 Conventional Stations (Setup)
- 5.6.2 Main Station Data
- 5.6.3 Push-to-Talk Options
- 5.6.4 Other Potentiometer Settings
- 5.6.5 Carrier Control Timer
- 5.6.6 Squelch Tail Elimination
- 5.6.7 Drop Out Delay Timer
- 5.6.8 Control Shelf Options
- 5.6.9 Station Remote Control
- 5.6.10 Auxiliary Control Relay
- 5.6.11 Squelch Operated Relay
- 5.6.12 Channel Guard Monitor
- 5.6.13 System Module - Digital Signal Processing
- 6 MASTR III ADC STATION DESCRIPTION
MM102558V1 R1A
Table 5-1: Typical* Tone Functionality for Tone Remote Control Signaling
TONE
(Hz)
FUNCTION TONE
(Hz)
FUNCTION
2175 SECUR-IT / TX Hold 1550 Channel Guard Decode or Repeater Enable
2050 RX Channel Guard Disable (Reset by
PTT)
1450 Channel Guard Decode OFF or Repeater
Disable
1950 TX Freq. No. 1 1350 TX-Freq. No. 3 or Aux. Function 1 ON
1850 TX Freq. No. 2 1250 TX-Freq. No. 4 or Aux. Function 1 OFF
1750 TX Freq. No 1 or Receiver No. 1 1150 Repeater Enable**
1650 TX Freq. No 2 or Receiver No. 2 1050 Repeater Disable** or Scan Simultaneous
Monitor
* The functionality listed for each tone is typical, however may differ for some installations.
** Repeater Enable and Repeater and disable are 1150 Hz and 1050 Hz only when Channel Guard
ON/OFF is present.
5.6.10 Auxiliary Control Relay
The MASTR III ADC T/R shelf may be equipped with up to two optional auxiliary relay kits, identified
as K1 and K2. Assignment of control functions for each relay may be performed using MSEDIT
Programming software.
AUX1 relay (K1) and AUX2 relay (K2) each contain two Form-C contacts and operate under remote
control. When AUX1 function is started, the system microprocessor sets signal RXF3/AUX1 to logic
high which switches K1. When AUX2 function is started, the system microprocessor sets bit 4 of output
register U106 high which switches K2. When the AUX functions are stopped, the control bits are
toggled, and the relay coil drops out. Detailed installation instructions may be found in Installation
Manual MM102554V1.
5.6.11 Squelch Operated Relay
The MASTR III ADC T/R shelf may be equipped with an optional Squelch Operated Relay (SOR),
identified as K3. The SOR (K3) contains four form "C" contacts and is rated for 2 amps at 20 VDC. The
relay operates under control of signal RX_1_MUTE, which is derived from the Carrier Activated Squelch
(CAS) signal. Detailed installation instructions may be found in Installation Manual MM102554V1.
5.6.12 Channel Guard Monitor
When the CG Monitor function DC control current or tone is received from a remote control unit, the T/R
Shelf does not require the correct CG before un-muting the receiver. This allows received audio to be
passed down the line to a remote control unit regardless of CG content, allowing the remote operator to
monitor all frequency activity prior to transmitting. For repeater stations, the correct CG tone(s) are still
required to key the station in repeat mode. This function is automatically reset when a remote control unit
keys the transmitter.
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