Hp-Ib Talk/Listen Address Switch; Power Cable Hp - HP 5384A Operating And Service Manual

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HP 5384A and HP 5385A
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Installation
of destination. Refer to Figure 2-2 for the part numbers
of the power cable and plug configurations available.
I
WARNING
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BEFORE ENERGIZING THIS INSTRUMENT, THE
PROTECTIVE EARTH TERMINAL OF THIS
INSTRUMENT MUST BE CONNECTED TO THE
PROTECTIVE CONDUCTOR OF THE (MAINS)
POWER CORD. THE MAINS PLUG SHALL ONLY
BE INSERTED IN A SOCKET OUTLET PROVIDED
WITH A PROTECTIVE EARTH CONTACT. THE
PROTECTIVE ACTION MUST NOT BE NEGATED
BY THE USE OF AN EXTENSION CORD (POWER
CABLE) WITHOUT A PROTECTIVE EARTH
(GROUNDING) CON-DUCTOR.
2-2
E
8120-0698
8120-1351
N
8120-1369
N
8120-1378
L
N
8120-1689
~-
L E
8120-2104
POWER-INPUT
SOCKET
Figure 2-2. Power Cable HP Part Number versus
Mains Plugs Available
2-17. HP-18 Interconnections
2-18. HEWLETT-PACKARD INTERFACE BUS. The
counter with HP-IB is compatible with the Hewlett-
Packard Interface Bus. Interconnection data concern-
ing the rear panel HP-IB connector is provided in
Figure 2-3. This connector is compatible with the HP
10833A/B/C/D cables. (See Table 2-1 for cable de-
scriptions).The HP-IB system allows interconnection
of up to 15 (including the controller) HP-IB
compatible instruments.
Table 2-1. HP-18 Cable Descriptions
HP Model Cable Length
10833A 1 metre (3.3 feet)
108338
2 metres (6.6 feet)
10833C 4 metres (13.2 feet)
108330
0.5 metres (1.6 feet)
2-19. The HP-IB cables have identical "piggy-back"
connectors on both ends so that several cables can be
connected to a single source without special adapters
or switch boxes. System components and devices may
be connected in virtually any configuration desired.
There must, of course, be a path from the calculator
(or other controller) to every device operating on the
bus. As a practical matter, avoid stacking more than
three or four cables on any one connector. If the stack
gets too large, the force on the stack produces great
leverage which can damage the connector mounting.
Be sure each connector is firmly (finger tight) screwed
in place to keep it from working loose during use.
2-20. CABLE LENGTH RESTRICTIONS. To achieve
design performance with the HP-18, the proper voltage
levels and timing relationships must be maintained. If
the system cable is too long, the lines cannot be driven
properly, and the system will fail to perform properly.
Therefore, when interconnecting an HP-IB system, it is
important to observe the following rules.
a. The total cable length for the system must be less
than or equal to 20 metres (65.6 feet).
b. The total cable length for the system must be less
than or equal to 2 metres (6.6 feet) times the total
number of devices connected to the bus.
c. The total number of instruments connected to
the bus must not exceed 15.
2-21. HP-18 Talk/Listen Address Switch
2-22. The HP 5384A and HP 5385A provide a rear
panel HP-IB instrument address selection switch. This
switch determines the mode of remote operation as
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