TIL -92-SC TSC-4100, Инструкция по установке и эксплуатации

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TECHNISONIC INDUSTRIES LIMITED
www.til.ca
TSC-4100/4200.4300 92-SC
Installation & Operating Instructions TiL 92RE125 Rev L
1-1
SECTION 1 - GENERAL DESCRIPTION
1.1 INTRODUCTION
This publication provides general information on the VHF/AM Single Channel Transceivers,
Model TiL-92-SC, Part Nos. 921018-1, 921018-2, and 921018-3 manufactured by Technisonic
Industries Limited. These units are also referred to by Item No.'s TSC-4100, TSC-4200 and TSC-
4300 respectively. This document covers the configuration of this equipment that utilizes either of
the following remote control cards; P/N 923051-1 (standard) or P/N 943180-1 (supplied upon
request). These cards allow the transceiver to be remotely controlled over 600 ohm dedicated
lines using a variety of keying methods.
The Model TiL-92-SC Transceivers are simplex, single channel, fixed frequency transceivers
operating over the frequency range of 117.975 MHz to 138.000 MHz. These units are intended
for base station operation in an air traffic environment. These systems can operate from AC
power or external DC power in local and remote operating modes.
1.2 DESCRIPTION
The three rack mounted transceiver configurations are based on the Model 90-6R pre-
programmable transceiver configured for Low power, 15 Watt or 25 Watt operation. All systems
can be configured for 2 Wire and 4 Wire remote operation with a variety of remote keying
methods (with 923051-1 standard card). Each configuration consists of a Power Supply Module,
Mother Board, and a Remote Control Board. The 15 Watt and 25 Watt configurations also consist
of an RF Amplifier Module.
To improve the rejection of interfering signals, dual conversion receiver technology has been
incorporated on the Transmitter/Receiver (Module A1) board used in Technisonic VHF/AM base
stations. The second IF is 455 kHz using a ceramic filter, which is immune to high energy ringing.
The dual conversion module also has a second local oscillator, second mixer and ceramic filter.
The first local oscillator is the original VCO.
The dual conversion receiver board, P/N 003494-1 was implemented into TBS and TSC series
base stations starting in January 2001. An option label on the chassis will indicate OPTION 94 if
the dual conversion board is installed. It is possible to retro-fit the dual conversion
receiver/transmitter board into older TSC/TBS series base station employing the single
conversion board. Please contact Technisonic for availability of an exchange board.
NOTE: If a new A1 Module has been retrofitted, the squelch circuit must be aligned for the
receiver squelch to operate correctly.
The dual conversion receiver’s squelch knob must be rotated significantly more clockwise (4
o’clock position) to obtain the same squelch setting (3uV) as a single conversion receiver’s
squelch knob set to the 12 o’clock (straight up) position.
If the dual conversion receiver’s squelch knob is set to the 12 o’clock position, signals with a level
greater than 0.5uV will open the squelch. At most airports this will not be an adequate level of
squelch. Please be aware of this squelch knob adjustment variance when setting and/or
comparing squelch levels of dual conversion vs. single conversion base stations.
An optional RF Crystal Filter which provides higher receiver selectivity is available. These filters
can be ordered to provide either an additional 20 dB (4 dB loss sensitivity) or 40 dB (7 dB loss) of
selectivity. An RF Isolator which provides unidirectional coupling to the antenna in multiple
transmitter configurations is now standard. Refer to Table 1.1 for system configuration details.