TECHNISONIC INDUSTRIES LIMITED
www.til.ca
TBS-150, 250, 350 Installation & Operating Instructions
TiL 92RE122 Rev L
2-12
2.4
OPTIONAL LOUDSPEAKER, HEADPHONE INSTALLATION
Provision is made for connection of an external loudspeaker or headphone to the
SPEAKER/PHONE jack of the transceiver, as shown in Figure 3.2.
2.4.1 External Loudspeaker
When an external loudspeaker is to be installed, an 8 ohm nominal impedance loudspeaker
should be used. The loudspeaker cable should be terminated by a 1/4 in., 3 pole telephone
plug (male), with the loudspeaker connected between tip and sleeve (ground). Insert the
external loudspeaker connector into the SPEAKER/PHONE jack located on the front panel of
the transceiver. When the external loudspeaker is connected to the transceiver
SPEAKER/PHONE jack, the internal loudspeaker is automatically disconnected.
2.4.2 Headset
Headset impedance should be 150 to 600 ohms. The headset cable must terminate in a 1/4
in. 3 pole telephone plug (male), to mate with the SPEAKER/PHONE jack located on the
front panel of the transceiver. The internal loudspeaker is automatically disconnected.
Connect the headset as indicated below for receiver audio with or without transmit audio.
(1)
HEADSET WITHOUT TRANSMIT AUDIO - When receiver audio only without
transmit audio is required, the headset should be connected between the tip and
sleeve (ground) of the telephone plug.
(2)
HEADSET WITH TRANSMIT AUDIO - When receiver audio with transmit audio is
required, the headset should be connected between the ring and sleeve (ground).
2.5 OPERATIONAL CHECK
Perform an operational check of the transceiver after all adjustments. Check each channel in
use in both the transmit and receive modes of operation, using the Operating Instructions
given in Section 3 of this document and the appropriate specified operating procedures
during transmission.
2.6 STORAGE
To store for an extended period, store unit in its original shipping container in a dry place,
