TECHNISONIC INDUSTRIES LIMITED
www.til.ca
TSC-4100/4200.4300 92-SC
Installation & Operating Instructions
TiL 92RE125 Rev L
1-3
1.2.5
Remote Control Boards
1.
Line Interface Board P/N 923051-1
This board provides remote control transceiver operation on 2-wire or 4-wire 600 ohm lines. The
board can be configured to key the transmitter using a 2175 Hz* continuous tone (see below),
plus/minus DC Voltages, ground keying and internal or external DC (15 mA) current loop keying.
Transmit and Receive audio is user selectable for two wires or four wires. *Crystals for tone
frequencies other than 2175 Hz may be obtained by special order (i.e. 2380 Hz).
2.
Line Interface Board P/N 943180-1
Provides remote control transceiver operation on 2 wire dedicated 600 ohm lines utilizing the EIA
multi-tone keying format found in the Land Mobile Industry. A high level 2175 tone followed by a
1950 Hz guard tone and then a low level 2175 Hz continuous tone is utilized to key the
transceiver. The 943180-1 board can also be jumper strapped for standard aeronautical 2175 Hz
continuous tone operation. DC (15mA) current loop and ground keying is also supported.
However this board does not support 4-wire operation.
NOTE:
P/N 923051-1 is the default board supplied in all units. The EIA multi-tone board P/N 943180-1
must be special ordered. To determine which remote card your 92-SC has installed the
Configuration label on the side of the rack mount chassis should be consulted.
1.2.6
Crystal Filter Board Assembly P/N 923069-1 (Option 1)
The Crystal Filter is a 25 kHz bandpass filter which provides additional selectivity during receive
operation. The filter provides 5 dB (MAX) attenuation of RF signals ± 7.5 kHz from the receive
frequency and 20 dB (MIN) attenuation of RF signals ± 50.0 kHz from the receive carrier
frequency. Loss in sensitivity is about 4 dB. A higher 40dB attenuation crystal filter can also be
ordered. Loss in sensitivity is about 7 dB. All crystal filters are cut to the required frequency and
require 6-8 weeks lead time. This item is interchangeable in the field. Refer to Paragraph 2.2.5 for
replacement instructions. If no crystal filter option is ordered, jumper board assembly P/N
923074-1 is installed.
1.2.7 RF
Isolator
The RF Isolator is a broadband (118 MHz - 138 MHz) RF directional coupler. The RF Isolator
provides 20 dB of isolation between the antenna and RF Amplifier while providing 0.7 dB (Max.)
insertion loss. The RF isolator is located on the motherboard and is now provided in all 92-SC
equipment.
Summary of Contents for -92-SC TSC-4100
Page 2: ......
Page 4: ...iiii ...
Page 6: ...iv ...
Page 40: ......
