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Hardware Specifications 2 - 1
Installation
S
ECTION
1
P
RECAUTIONS
The ETUs used in this system make extensive use of CMOS technology
that is very susceptible to static electricity.
Static discharge must be
avoided
when handling ETUs. Always use the following precautions:
Wear a grounded wrist strap anytime you handle an ETU.
Make all ETU DIP switch setting changes before inserting the ETU in
the KSU.
Carry ETU in a conductive polyethylene bag to prevent static
electricity damage.
S
ECTION
2
E
NVIRONMENTAL
C
ONDITIONS
The following temperature and humidity variances apply for
VMS/FMS( )-U10 ETU operation:
Operating temperature: +32
º
to 85
º
F (0
º
~ 29.5
º
C)
Long-term temperature: +50
º
to 80
º
F (10
º
~ 26.7
º
C)
Operating humidity: 10% to 90% (noncondensing)
S
ECTION
3
I
NSTALLING
THE
DSP-F-21 U
NIT
ON
THE
VMS(4)-U10
ETU
To upgrade a VMS(2)/(4)-U10 ETU to 8 ports, the DSP-F-21 must be
installed. When the VMS(8)-U10 ETU is purchased, the DSP-F-21 is
installed at the factory. Refer to Figure 2-1 DSP-F-21 Unit Installation.