Monroe Electronics 948A - Manual (Page 5)

4
INSTALLATION
1. Remove the two screws holding the cover on the 948A and remove the cover.
2. The Model 3185E is factory set to decode a 4-digit ‘ON’ code sequence and a 4-
digit ‘OFF’ code sequence. The first three digits in the code sequence are
determined by the hexadecimal rotary switches on the front edge of the 3185E. 0
through D select the corresponding DTMF digit to be decoded. The letter ‘E’ on the
rotary switch represents the ‘*’ DTMF digit and the letter ‘F’ on the rotary switch
represents the ‘#’ DTMF digit. The fourth digit for the ‘ON’ code sequence is factory
set to ‘*’, and fourth digit for the ‘OFF’ code sequence is set to ‘#’. Set the rotary
switches on the 3185E to the Cue Tone sequence you wish to decode. See the
3185E manual for more information.
3. The Cue Tones may be received by the Model 948A from the alternate program
source (baseband audio) or other audio subcarriers. If so, connect an audio cable
from the Cue Tone source to TB1 #4 with common on TB1 #5 (ground). If installing
a 948AX, connect Cue Tone Audio to TB2 #8 and TB1 #5 (ground).
4. Connect the video from the main program source to the normally closed (NC) F
connector on the 3446A card.
5. Connect the video from the alternate program source to the normally open (NO) F
connector on the 3446A.
6. Connect the modulator video input to the common (COM) F connector on the
3446A card.
7. Connect the Left and Right Audio inputs, and the Audio output, to the screw
terminals on the mother board as shown in the accompanying schematic.
8. Connect the White (+12) lead from the power supply to TB1 #7 and the Black
(GND) lead from the power supply to TB1 #6.
9. If your model is a 948A, the audio tones may be supplied over the telephone line
and/or from an audio source as described above. If the signals come ONLY over
the telephone line, disregard item 3 above.
10. Attach the Tip and Ring lines from the POTS line to the connections as shown on
the attached drawing.
11. The 3137B is set to answer on 2 rings, and hang up on current disconnect when
the calling party hangs up. See the 3137B manual for more information.