Teledex Y Series - Manual (Page 10)

10 www.teledex.com Y SERIES EXP212, EXP224, AND EXP248 USER GUIDE
After the site requirements have been verified, the
chassis may be installed at the specified location.
When mounting the chassis, practice good safety
habits. Use two or more people to secure the
chassis. Relay rack mounting normally requires
at least two people.
Step Action
1
Locate the chassis and obtain the
appropriate chassis mounting hardware.
2 Determine and obtain the tools required
for the chassis mounting hardware.
3 From the front of the relay rack, position
the chassis in its relay rack mounting
location.
4 Using the appropriate rack mounting
hardware, secure the chassis in its relay
location on both left and right side of
mounting bracket (see Figure 1.3).
Note—The chassis should be empty during the
chassis mounting procedures. Remove any unit in
the chassis, and store them according to static-
sensitive device storage procedures.
Warning—Hazardous voltages may exist on the
chassis. Always practice good safety habits when
wiring a live circuit or performing maintenance.
For 23’’ Rack
For 19’’ Rack
Figure 1.3 Mounting Bracket Position for
Standard Mount
1.2.3 POWER AND GROUND
CONNECTIONS
Figure 1.4A DC and AC Power Connection of
EXP212/EXP224
Figure 1.4B DC Power Connection and Power
Switch of EXP248
DC POWER CONNECTIONS
The DC power interface is a 4-pin terminal block
with polarity signs on the front panel of the
DSLAM.
The EXP212, EXP224, and EXP248 can be
powered from two –48V DC power supply. The DC
power connector is a 4P terminal block; 2P is for
accommodating one DC power input and other 2P
is for accommodating another DC power input.
The DC power should be connected to a well-
fused power supply.
After completing chassis installation, please
apply power to the fused power distribution panel
feeding the chassis. When using a DC voltmeter,
please check for proper voltage: –60V through