TECHNISONIC INDUSTRIES LIMITED
www.til.ca
TBS-150, 250, 350 Installation & Operating Instructions
TiL 92RE122 Rev L
3-6
TABLE 3.2
OPERATORS SWITCHES, CONTROLS AND INDICATORS
(Continued)
No.
SWITCHES
CONTROLS &
INDICATORS
FUNCTIONAL DESCRIPTION
11
KEYPAD
Performs Channel/Frequency and Special Feature Selection (Refer
Table 3.3).
12 LIQUID
CRYSTAL
DISPLAY
A 5½ digit Liquid Crystal Display (LCD) displays the FREQUENCY/
CHANNEL that the transceiver is currently operating on. IN SCAN
mode it displays the current frequency scanned if RF signal is
present.
13
LOUDSPEAKER
An 8 ohm internal speaker reproduces the receiver audio output.
The audio line is disconnected from the internal loudspeaker when
the transceiver is operated in Tx mode or when the
SPEAKER/PHONE connector is in use.
14 SPEAKER/PHONE
CONNECTOR
A 3 pole connector provides interconnection to either an external
loudspeaker or headphone. When in use, the internal speaker is
disconnected and the VOLUME control sets the audio level applied
to the external speaker or headphone.
15 AC
ON/OFF
SWITCH
A single pole switch applies external AC power to the Base
Station power supply.
16 AC
POWER
ON
LED INDICATOR
A RED LED indicates when AC power is applied to the unit and the
AC POWER SWITCH is set to ON. Also indicates that the Base
Station power supply is functioning.
17
AC FUSE
A 2.5 Amp fuse protects the Base Station power supply from
power supply internal short circuit or transceiver short circuit.
18 EXTERNAL
DC
FUSE
A 5 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.
19
EXT DC BLOWN
FUSE INDICATOR
A RED indicates when External DC fuse is blown.
20 RF
POWER
SWITCH
Selects Low Power or High Power (15W/25W) Transmit
Operation, in Base Stations with a Linear Amplifier. Not provided
on Low Power units.
21
15/25 W RF
POWER LED
INDICATOR
An AMBER LED indicates that 15/25 Watt (High) RF Power output
has been selected and transceiver is operating in transmit mode.
The LED is driven by sampled RF and indicates that RF is present.
22 *AC
POWER
CONNECTOR
3 Prong AC Connector for use with AC Power Cord P/N 927002-
1.
23 *REMOTE
CONTROL
CONNECTOR
9-Pin "D" type connector provides connections required for remote
operation. Refer to Table 2.1 for connector details.
24 -*EXTERNAL
DC
CONNECTOR
Chassis mounted connector provides for Connection to External
DC Supply Source. Mates with DC power cable P/N 863701-1.
* Denotes items located on rear panel.
