FDI2056 Use
r’s Manual
v 2.0 r 1.1
– 03/13
Copyright © 2013 Metrolab Technology SA
8
www.metrolab.com
PROGRAMMING THE FDI 2056
3-
VXI & SCPI standard interfaces
3-1 HOST INTERFACE
The FDI 2056 and its associated host software support an Ethernet interface. The
native host interface protocol is based on the following standards, very widespread in
the instrumentation industry:
- VXI-11: Ethernet device control,
- SCPI: command structure.
The native commands provide access to all the features of the FDI 2056.
3-2 SCPI INSTRUMENT MODEL
The FDI 2056 complies with the Standard Commands for the Programmable
Instruments (SCPI) standard. SCPI uses a standard instrument model to organize the
command structure. The diagram below shows the subsystems concerning the signal
flow.
The following table provides a summary of the FDI 2056 capabilities, organized
according to the SCPI command reference
– SCPI 1999, Volume 2 -. The supported
commands include IEEE 488.2 “Common Commands” (start with “*”) as well as SCPI
commands
– see Sections 3-5 through 3-7 for details. In addition to ASCII commands,
the FDI 2056 also supports certain VXI-11 commands, also noted in this table.
Functional Block
Command(s)
Function
Measurement
Function
:MEASure …
Measure with standard settings. Equivalent to
*RST;:READ …
:READ …
Measure with current settings. Equivalent to
:ABORt;:INITiate;:FETCh?
…
:FETCh …
Fetch
measurement
results
previously
acquired with READ or INITiate
CALCulate
:CALCulate…
Cumulative or partial-integrals mode.
CALibration
-
Not used in the FDI 2056
CONTrol
:CONTRol
Quadrature signal decoder configuration
DIAGnostic
:
DIAGnostic: …
Initiate firmware upgrade
DISPlay
:DISPlay
4-Digit display management