Polarization Extinction Ratio Meter PEM-340
9-1
9
Communication Interfaces
The PEM-340 supports both GPIB and RS-232C communication protocols. This enables
remote operation of the device and integration in automated test and measurement systems.
Although the two protocols are fundamentally different the core control commands are the
same.
9-1. GPIB Control
A communication function based on standards specied in IEEE-488.
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9-1-1
Connection
Connect the 24-pin GPIB cable to the GPIB connector on the rear panel.
The total extension of the connected cable shall be 20 m or less. The cable length
between each device must be 2 m or less. At most, 15 devices can be connected.
Do not disconnect or connect a cable from and to devices connected with GP-
IB cable, do not short-circuit connector, and do not turn ON/OFF the devices.
Otherwise, action may be stopped, error may occur, causing a failure. In the
event of trouble owing to these causes, reset all the connected devices, and
then activate the system once again.
When conguring a system, remove the unused device or unnecessary cable
and return to the original setup.
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