TECHNISONIC INDUSTRIES LIMITED
www.til.ca
TAF-550 Installation & Operating Instructions
TiL 96RE187 Rev D
3-5
TABLE 3.1
OPERATORS SWITCHES, CONTROLS AND INDICATORS - TAF-550 (Continued)
SWITCHES
CONTROLS &
INDICATORS
FUNCTIONAL DESCRIPTION
27
LOUDSPEAKER
An 8-ohm speaker mounted in the TAF-550 Modular Case reproduces the
TFM-138B receiver audio output. The audio line is disconnected from the
internal loudspeaker when the transceiver is operated in Tx mode.
28 SPEAKER
ON/OFF
SWITCH
Toggle switch will enable the TAF-550 chassis mounted speaker for the
TFM-138B to be turned ON or OFF.
29
*AC FUSE
A 2 Amp fuse protects the TAF-550 Modular Case power supply from power
supply internal short circuit or transceiver short circuit.
30 *EXTERNAL
12
VOLT DC FUSE
A 5 Amp fuse protects the 12 volt nominal power supply line.
31 *EXTERNAL
24
VOLT DC FUSE
A 3 Amp fuse protects the 27.5 volt nominal power supply line. As part of
reverse polarity protection, the fuse will "blow" when polarity of the External
DC supply line is reversed.
32 *DC
POWER
CONNECTOR
Chassis mounted connector provides for Connection to External DC Supply
Source. Mates with DC power cable P/N 963213-1 for 12 VDC supply
operation and P/N 963212-1 for 24 VDC supply operation.
33 *AC
POWER
CONNECTOR
3 Prong AC Connector for use with AC Power Cord P/N 927002-1.
34 *PC
DOWNLOAD
CONNECTOR
9 Pin "D" type connector provides connections required for PC Download
operation. Refer to TFM-138B Operating Instructions for details.
35 *AM
ANTENNA
CONNECTOR
A 50 ohm coaxial BNC connector provides connection to an external
VHF/AM antenna.
36 *FM
ANTENNA
CONNECTOR
A 50 ohm coaxial BNC connector provides connection to an external
VHF/FM antenna.
* Denotes items located on rear panel.
