APIB or GPIB?
A 2700 se ries in stru ment is nor mally con trolled by Au dio Pre ci sion’s
AP2700 con trol soft ware us ing the APIB in ter face bus. In the GPIB con fig u -
ra tion, the in stru ment can be con trolled by ei ther GPIB or APIB as se lected by
a switch on the GPIB hard ware mounted on the in stru ment rear panel.
The GPIB con fig u ra tion makes it pos si ble to in te grate 2700 se ries hard ware
into a sys tem that may in clude other GPIB-com pat i ble in stru ments and de vices
un der op er ated by your choice of GPIB control software.
Au dio Pre ci sion does not pro vide con trol soft ware for GPIB ap pli ca tions.
We do of fer full doc u men ta tion of the 2700 se ries func tions con trol la ble by
GPIB in the 2700 Series GPIB Pro gram mer’s Ref er ence Man ual, which con -
tains a list ing of all 2700 series GPIB com mands and de tailed ex pla na tions of
com mand pa ram e ters. The ref er ence man ual co mes with a com pan ion CD-
ROM that con tains sam ple pro grams writ ten for Microsoft Vi sual Ba sic. These
pro grams pro vide ex am ples of how to con trol a 2700 se ries in stru ment to
perform many common audio measurements.
With this in for ma tion and some knowl edge of 2700 se ries the ory and op er a -
tion, you can de velop cus tom soft ware to con trol your GPIB sys tem. A rec om -
mended path of soft ware de vel op ment is dis cussed in the following topics.
LabVIEW pro ject files
We have pub lished a Cer ti fied LabVIEW Plug and Play (pro ject-style) In -
stru ment Driver that al lows you to con trol Au dio Pre ci sion 2700 Se ries GPIB-
equipped in stru ments from within the NI LabVIEW en vi ron ment. Visit our
Web site for more in for ma tion about the LabVIEW driver.
The GPIB Software Development Process
A prac ti cal work ing knowl edge of your in stru ment is re quired in or der to
de velop ef fec tive GPIB soft ware for it. Fig ure 66 il lus trates a typ i cal soft ware
de vel op ment sce nario in which the 2700 series con trol soft ware is used to de -
velop ex per tise with the 2700 se ries in stru ment be fore at tempt ing to in te grate
the in stru ment into a larger sys tem con trolled by a GPIB in ter face soft ware
pro gram.
Since the GPIB pro gram ming com mands for the 2700 se ries are mod eled
di rectly on the 2700 se ries con trol software user in ter face, the fast est path for
GPIB soft ware de vel op ment in volves the use of the con trol soft ware as a
learning tool.
Work ing in the 2700 se ries con trol soft ware you can de velop test meth ods
for your DUT and build con fi dence that your meth ods are cor rect. You can use
Chapter 7: GPIB Configuration LabVIEW pro ject files
92 Getting Started with Your 2700 Series Instrument
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