Monroe Electronics 631A Instruction Sheet

Model 631A Program Timer Jr. Instruction Sheet
Description
Monroe Electronics' Model 631A
Program Timer Jr. provides 2x1 (AB)
balanced stereo audio follow video
switching by timed commands. Six 'ON'
and six 'OFF' instructions may be stored
in the timer's memory. NO & NC
contact actions are also provided with
each timed switch .
The test button, under the 'h+' and 'm+'
Buttons, is used to manually change the
status of the 2x1 switch.
Installation
1. Remove the four screws on the
cover of the 631A and install a AA
battery in the holder on the under
side of the PC board. Re-install the
cover screws.
Specifications
Video
>70 dBmV @ 100 MHz.
>45 dBmV @ 450 MHz
Stereo Audio
DPDT w/screw terminals
Clock Accuracy
±1 sec per day @ 20°C
Battery Backup
1.5 VDC AA
Power Requirement
100-240 VAC ±2%, 50/60 Hz.
Power pack output; +12 VDC
Physical
2.00"H x 4.25"W x 6.50"D
2. Connect your main stereo
audio/video source to the primary
inputs.
3. Connect your alternate stereo
audio/video source to the secondary
inputs.
4. Connect the 631A's stereo
audio/video outputs to your
equipment's inputs.
5. Connect the furnished power
supply's WH wire to the +12 VDC on
the 631A, and the BK wire to GND.
6. Apply AC power, the display will
show 'OFF' and '00:00'.