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HP-IB onnectors and ables
A tutorial description of HP-IB is available from Agilent echnologies (see chapter 1 for
ordering information). See also \Remote Operation," which describes the analyzer's HP-IB
capabilities. Figure 2-11 illustrates an HP-IB connector pin con guration and signals.
Connectors
he analyzer has two rear panel HP-IB connectors:
1. he 8757 System Interface (J1).
his remote programming interface lets you connect the analyzer to the HP-IB connector
of compatible instruments and use the analyzer (in either local or remote operation) to
control a plotter, printer, or source. his dedicated HP-IB port is used exclusively by the
analyzer; do not connect a controller to this connector.
2. he HP Interface Bus (J2).
his remote programming interface lets you connect the analyzer to a controller via HP-IB
with or without additional instruments. You can then remotely operate the analyzer with
the same control (except for power, line switch, and internal tests) as with local operation.
he controller maintains remote control by sending commands to and receiving data from
the analyzer over the HP-IB.
Cables
Connect instruments on the HP-IB or on the system interface using HP-IB cables. he
cables are available in lengths from 0.5m (1.6 ft) to 4m (13.2 ft). See chapter 1 \General
Information" for ordering information.
You may connect up to fteen instruments in parallel on the HP-IB or the system interface,
but if the system cable is too long or if the accumulated cable length between instruments
is too long, the system cannot maintain the proper data and control lines voltage levels and
timing relationships (see able 2-5).
2-18 Installation
Table 2-5. HP-IB Cabling Restrictions
Number of Instruments
in the ystem
2
> 2
na
Including the analyzer.
2
To each instrument.
3
Between all units.
Maximum Cable Length
(m/ft)
4/12
2/6
2
20/65
3
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