MOD 7a STEREO PROCESSOR
10
Power Supply Connections
The PS-2 is a cool-running, universal switching power
supply that operates on 100-250 VAC (50-60Hz), needing
only a change in plug to operate in any country. It delivers
clean +15 and -15 DC voltages to the MOD 7a and has
enough extra power to run companion products. Mount
the PS-2 in any convenient place. Run the factory supplied
power supply wiring harness to the MOD 7a processor.
Dress the wires for appearance and craftsmanship. The
wiring harness has a 6 position Phoenix pluggable terminal
strip that plugs into the leftmost plug labeled POWER on
the rear of the MOD 7a.
WARNING:
Do NOT plug a live power supply into the
back of the MOD 7a processor!
Make sure that the power
supply is DISCONNECTED from the power mains before
connecting to the MOD 7a. Failure to heed this warning can
cause fatal damage to internal components and void the
manufacturers warranty.
The wire codes for the main Power Supply are as follows
(from left to right on the back of the MOD 7a):
Red : +15 VDC
Black : GROUND
White : -15 VDC
Backup Power Supply.
The backup power supply is a 12 VDC, 100mA supply that
is furnished only for countries with 120VAC mains. It
comes from the factory connected to the 6 position Phoenix
connector when shipped to 120VAC mains countries.
Customers in other countries will need to provide their
own 12 VDC, 100mA backup supply.
The wire codes for the Backup Power Supply are as follows
(from left to right on the back of the MOD 7a):
Black w/ white stripe : +BACKUP
Black : GROUND
Remember to check all connections before applying power
to the system. A wire that is reversed could be very
destructive to the system.
Soundhead Connections
Solar Cell
Using three-conductor shielded cable, connect the wire
from the left solar cell (red) to the correspLEFT1
input terminal of the MOD 7a SOUNDHEAD connector.
Connect the wire from the right solar cell (green) to the
+RIGHT1 input terminal. The common solar cell lead
(black) should be connected to both LEFT1 and RIGHT1,
and the shield of the cables should be connected to a
GROUND terminal. Be sure to cut off the shield at the
projector end so that a ground loop is not created. Only the
shields on the MOD 7a end of the cable should be grounded.
It is good practice to tape or shrink wrap the end of the
shielded cable at the sound head to prevent any stray
shield wires from grounding out to the sound head case.
Reverse Scan
If you are using a Reverse Scan system, use a two-conduc-
tor shielded cable to connect the -LEFT1 and +LEFT1
terminals on the MOD 7a to the corresponding terminals on
the Reverse Scan terminal block. Connect another two-
conductor cable likewise from the -RIGHT1 and +RIGHT1
terminals to the corresponding terminals on the Reverse
Scan terminal block. The neutral wires (-LEFT1 and -
RIGHT1) should not be tied together.
INSTALLATION
MOD 7 rear panel
Processor Placement
Before mounting the MOD 7a processor in the equipment rack or projector console, be sure to select a well ventilated area
that allows cool air to circulate around the individual components. Make sure that the processor is not immediately
adjacent to hum producing components such as power amplifiers with large transformers.
