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General Information 1-7
Installation
This section provides information for installing a 9895A Dual Disc Memory and putting it
into operation.
The 9895A Disc Memory may contain either one or two drives, depending on purchaser
preference. It may also control one or two other drives in another 9895A (Option 011 or
012). It is connected to a controlling mainframe by means of an HP Interface Bus (HP-IB)
System. It is connected to other 9895A's by means of a cable furnished with Option 011 and
012 units (part number 09895-61606). The disc memory is controlled by a standard set of
commands (see Appendix A), utilizing HP-IB timing and protocol. Many HP computers
provide a high-level language subsystem to control a disc memory. Methods for controlling
the disc memory are contained in the computer's programming or subsystem reference
manual. If a high-level disc control language is not available with your mainframe, refer to
the disc memory command set description in the appendix. Contact the local HP Sales and
Service office for assistance.
Please follow these instructions carefully, as a mistake made in the installation can cause
impaired operation.
Power Requirements
The 9895A can operate on line voltages of 100, 120, 220 or 240 Vac (±10%). The line
frequency must be within 2.0% of 50 or 60 Hz. The voltage selector switches on the rear
panel must be set to the nominal ac line voltage for the area it is operating in. Figure 1-1
shows the setting of the voltage selector switches for the various line voltages.
NOTE
Option 001 must be Installed In the 9895 when operating on a line
frequency of 50 Hz. Option 001 requires internal modification.
~....,.240-~-2201
[
l J
L120-LJ-100
240V
n....,.240-~-220=]
c~
L120-LJ-100
220V
~....,.
240 - n - 220
-1
c l J
L120-~-100
120V
Figure 1-1. Line Voltage Selector Switches
nl240-n-220~
c~
120-~-100
lOOV
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