and +28 VDC (nominal) supplies. The unit will automatically switch over to the use of the DC input when the AC source drops too low or is not available. Slide switch S6 on the Main Board is used to select either +12 or +24/+28 VDC operation. S1 is located near the left front edge of the Main Board; the +12V and +24/+28V switch positions are clearly marked on the board. The
2.8 CONFIGURING THE RTU-292
The
NOTE:
Many of the
2.8.1 PROGRAMMING MODE SETUP PARAMETERS
Some of the
2.8.2 SETTING TELEPHONE SEND AND RECEIVE LEVELS
The levels of the audio signal that are sent into (Send) and received from (Receive) the telephone line are adjustable via SW2 switches 1 through 3 on the
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