R3131 Spectrum Analyzer Operation Manual
4.1 GPIB Remote Programming
GPIB connector
The following conditions should be observed when using a GPIB interface:
• The total GPIB cable length in a single bus system must not be more than 20m (you can calculate the
current cable length using the formula total length = n x 2m ,where, n is the number of devices to be
connected, including the GPIB controller).
• No more than 15 devices can be connected to a single bus system.
• There are no restrictions concerning the method of connection between cables. However, no more
than three GPIB connectors should be connected to a single device, since more than this may damage
the connector mounting due to excessive strain.
(Example) The total cable length in a system with five devices should be 10m or less (2m x 5 devices =
10m). There is no restriction on the length of the cables between the individual devices as
long as the total length does not exceed 10m. However, if you connect 10 devices or more,
make sure that at least some of the cables attaching the devices are less than 2m so that the
total is less than 20m.
(2) Setting the GPM Address
Use the following procedure to set the GPIB address for the spectrum analyzer:
1. Press CONFIG and GPIB.
This displays the GPIB menu.
2. Press Address.
The current GPIB address is displayed in the active area.
3. Use the data knob, the step keys, or the numeric keys to set the GPIB address as required.
4. Press ENTER (Hz) to set the address.
4-2
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