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Signal Conditioning Measurement Operations & Settings
Agilent 8163A/B, 8164A/B & 8166A/B Mainframes, Fifth Edition 165
Compatibility of the 81560A/1A/6A/7A
modular attenuator family to the 8156A
attenuator
The 81560A/1A/6A/7A modular attenuator family is intended to be SCPI
compatible with the 8156A attenuator but, because the modular attenuator
family is part of a platform concept, there are some compatibility
limitations. This section describes the differences between the SCPI
syntax and the command semantic and how to deal with them.
Slot Numbers
INPUT and OUPUT SCPI commands (page 106-114) are used to access the
functionality of the 8156A Attenuator. The 816xA/B mainframes are able
to host a number of modules, so a slot identifier is needed. This slot
identifier was not required by the 8156A attenuator. Simply substitute
INPutn for INPut, and OUTPutn for OUTPut, where n is the slot number of
your attenuator module.
Example1: Setting the attenuation
8156A:INP:ATT 10 dB
8156x:INP2:ATT 10 dB
(when the attenuator is hosted in Slot 2)
Example2: Setting the output power
8156A:OUTP:POW 10 dBm
8156x:OUTP2:POW 10 dBm
(when the attenuator is hosted in Slot 2)
If you forget to enter the slot number, one of the following error messages
is placed in the SCPI error queue:
-303,"Module slot empty or slot / channel invalid"
-301,"Module doesn't support this command (StatCmdUnknown)"
TIP: Query the SCPI error queue using SYST:ERR?
The page numbers in brackets refer to pages in the Agilent Technologies
8156A Attenuator Operating and Programming Guide, Second Edition, May
2000 with part number 08156-91011:E0500.
NOTE