EXFO FVA-3150 Variable Attenuator - Manual (Page 51)

Variable Attenuator 45
6 Controlling Your Variable
Attenuator Remotely
The FVA-3150 Variable Attenuator can be remotely controlled either by:

a GPIB interface (through a GPIB cable connected to the GPIB port), or

an RS-232 interface (through a serial cable connected to the serial
port)
The commands used in both protocols are the same and are described in
the following pages. When the Variable Attenuator is being remotely
controlled, Remote appears in the lower left corner of the display.
Note: If you have already designed a GPIB program to control an attenuator from
EXFO’s IQS Series (IQS-3100 or IQS-3150), you can reuse sections for the
FVA-3150.
Setting Up the Variable Attenuator for Remote
Control
To remotely control the Variable Attenuator, you need to set a GPIB address
or activate the RS-232 port from the FVA-3150 front panel.
To set up the Variable Attenuator for remote:
1. Press Setup.
2. Use the left/right arrows to select GPIB-RS.
GPIB
setting