3-4
TABLE 3-1 OPERATORS SWITCHES, CONTROLS AND INDICATORS (Continued)
FIG
3-1
No.
SWITCHES
CONTROLS &
INDICATORS
FUNCTIONAL DESCRIPTION
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
LOCAL/
REMOTE
SWITCH
Selects Local or Remote operation (Refer paragraph 2.4) for remote set
up details.
15
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.
16
AC ON/OFF
SWITCH
A 2-pole switch applies external AC power to the portable case power
supply.
17
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 Portable Case
power supply is functioning.
18
AC FUSE
A 2.5 Amp fuse protects Portable Case power supply from power
supply internal short circuit or transceiver short circuit.
19
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.
20
EXT DC ON
LED INDICATOR
A GREEN LED indicates when External DC is applied to the unit and the
EXTERNAL DC SWITCH is set to ON.
21
EXTERNAL DC/
INTERNAL
AC/DC SWITCH
Selects External DC when set to EXT DC isolating Batteries and AC
Supply line. Selects AC or Battery operation in conjunction with Battery
ON/OFF switch.
22
BATTERY
ON/OFF
SWITCH
Selects AC Operation when set to Battery OFF. When set to Battery ON
provides Battery Power to transceiver. When AC Switch is set to ON
and AC Power is connected, battery charging is enabled.
23
INTERNAL
DC FUSE
A 5 Amp fuse provides battery isolation in the event of a short circuit.
Summary of Contents for TiL-91-DE/S
Page 6: ...1 2 Figure 1 1 TPS 250 Portable Transceiver General View Closed Open View...
Page 7: ...1 3 Figure 1 2 Transceiver Front Cover Assembly...
Page 14: ...2 2 Figure 2 1 Battery Installation and Removal...
Page 18: ...2 6 Figure 2 2 Fixed Channel Jumper Locations...
Page 20: ...2 8 Figure 2 3 Remote Operation Jumper Locations...
Page 25: ...3 2 Figure 3 2 Transceiver Front and Rear Panel Layout...
