Agilent Technologies HP 83711A, User Manual

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Front/Rear P anel
Connectors
As many as 14 HP-IB instruments can be connected to the synthesizer (15
total instruments in the system). The cables can be interconnected in a star
pattern (one central instrument with the HP-IB cables emanating from that
instrument like spokes on a wheel), or in a linear pattern (like boxcars on a
train), or a combination of the two . There are certain restrictions that must
be followed when interconnecting instruments . These restrictions are as
follows:
Each instrument must have a unique HP-IB address , ranging from 0 to 30
(decimal). Refer to \T o Set the HP-IB A ddress" in Chapter 2 for information
on setting the synthesizer HP-IB address .
In a two-instrument system that uses just one HP-IB cable , the cable length
must not exceed 4 meters (13.2 ft).
When more than two instruments are connected on the bus , the cable
length to each instrument must not exceed two meters (6.6 ft).
The total cable length between all instruments must not exceed 20 meters
(65 ft).
Hewlett-P ackard manufactures HP-IB extender instruments (Models HP
37201A and HP 37204A/B) that overcome the range limitations imposed by
the cabling rules . These extenders allow twin pair cable operation up to 1 km
(3,280 ft), and telephone modem operation over any distance . HP sales and
service oces can provide additional information on the HP-IB extenders .
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