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CHAPTER 2
INSTALLATION
2.1 SCOPE
This chapter describes the preparation and installation of the DHQ 11 option. It contains the following
sections.
•
Unpacking
•
Preparation
•
Installation
•
Testing
2.2 UNPACKING AND INSPECTION
If ordered as part of a system, the DHQll will already be installed, and you should refer to the
instructions for unpacking the system.
If ordered as an add-on option to an existing system, a DHQII-M (Q-bus module) will be supplied
together with a cabinet kit, distribution panels, and interconnecting cables. The choice of cabinet kit
depends on the type of system and on whether EIA-232-D or DEC423 connection standards apply
(Table 2-1 gives details of these options).
NOTE
DEC423 is a term used in this manual to indicate a
data-Ieads-only implementation of the RS-423-A
electrical interface standard.
If the equipment is to be installed by DIGITAL Field Service, the customer should not open the
packages.
If the DHQ11 was ordered as an add-on option, find the carton marked OPEN FIRST and carefully
unpack it. There is a shipping list inside the carton.
Undo each package and examine the contents for physical damage. Check that the contents of each
package are complete. Report any damaged or missing items to the shipping agent and to the DIGITAL
representative. Do not dispose of the packing material until the unit has been installed and is
operational.
2-1