COMSPHERE 3600 Data Service Units
2-2
December 1996
3610-A2-GB43-50
Installing the DSU
The Model 3610 DSU is designed for desktop
operation.
•
Place the DSU in the planned location.
•
Allow 1 to 2 feet of clearance for cable
connections, space for the ventilation slots on the
sides, and clearance at the rear for the cable
connections.
NOTE
Before powering up the DSU,
verify the hardware strap
settings. Refer to the User’s
Guide.
Powering Up the DSU
CAUTION
The power cord and ac
transformer have a 3-wire
grounding-type plug with a
grounding pin. This is a safety
feature. Grounding of the unit
is vital to ensure safe
operation. Do not defeat the
purpose of the grounding plug
by modifying it or by using an
adapter.
Prior to installation, use an
outlet tester or voltmeter to
check the ac receptacle for
earth ground. If the power
source does not provide a
ground connection, consult an
electrician to determine another
method of grounding the unit
before proceeding with the
installation.
.
Procedure
1. At the rear of the DSU, insert the round end of the
power cable into the receptacle labeled POWER.
Low
Voltage
AC Power
In
495-14703
Table-Top
AC
Transformer
POWER
LINE
BA
CK
UP
CC
/DC
V.35
3-Prong
Grounded
AC
Wall Outlet
2. Connect the 3-prong plug at the other end of the
cable to an ac outlet.
Power-Up Routine
When you apply power, the DSU performs a power-up
routine and:
•
Determines what hardware options are installed, if
any. This may include DBM, MUX, TDM, and
MCMP.
•
Automatically runs a Device Test on itself and each
installed hardware option. All front panel lights
flash on and off.
