RTU-292 Operations Manual
3 Operation
3.1 GENERAL
This section contains information and instructions required for proper operation of the RTU- 292.
3.2 FRONT PANEL CONTROLS, INDICATORS AND CONNECTORS
3.2.1MAIN POWER SWITCH
The Main Power switch controls the external DC power to the unit. The switch is a locking toggle type to prevent inadvertent operation.
3.2.2HEADPHONE JACK
This front panel jack accepts a standard 1/4 inch diameter monaural phone plug. The output will drive low, medium, or high impedance headphones. The phones audio level is adjustable via the PHONES VOLUME control on the right side of the panel.
3.2.3HANDSET JACK
This front panel jack is a standard
3.2.4HANDSET
The handset allows sending and monitoring audio to and from either the telephone line, the radio, or both, depending on the HANDSET/PHONE and HANDSET/RADIO pushbutton selections. The handset also has a PTT
3.2.5SPEAKER
The speaker allows monitoring of telephone line and/or radio audio, depending on the selections of the SPEAKER/PHONE and SPEAKER/RADIO monitor modes. In addition, the speaker serves as the telephone ringer for incoming calls. The speaker volume (except for the ring signal) is controlled by the SPEAKER volume control located on the right side of the front panel. The ring signal may be enabled or disabled by the AUDIBLE RING pushbutton. The ring volume is controlled by an internal potentiometer R156 (see section 2.8).
JPS Communications, Inc. |