Hardware Specifications 2 - 1
Installation
SECTION 1
PRECAUTIONS 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 yo u handle an ETU.
Make all ETU DIP switch setting changes before inserting the ETU in
the KSU.
Carry ETU in a conductive p olyethylene bag to prevent static
electricity damage.
SECTION 2
ENVIRONMENTAL
CONDITIONS The following temperat ure and humidity variances apply for
VMS/FMS( )-U10 ETU operation:
Operating temperature: +32º to 85º F (0º ~ 29.5º C)
Long-term temperature: +50º to 80º F (10º ~ 26.7º C)
Operating humidity: 10% to 90% (non c on densing)
SECTION 3
INSTALLING THE
DSP-F-21 UNIT 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)-U1 0 ETU is purchased, the DSP-F -21 is
installed at the factory. Refer to Figure 2-1 DSP-F-21 Unit Installation.