Agilent Technologies 4288A, Programming Manual, Page: 218 / 289

216 Appendix B
Information for Replacing 4278A with 4288A
Functional Comparison and GPIB Command Correspondence
Integration time (measurement time)/averaging
Functional comparison
Differences in usage of GPIB commands
GPIB command correspondence
Cable length
Functional comparison
GPIB command correspondence
4278A 4288A
Integration time (measurement time) SHORT, MEDIUM, LONG
SHORT
*1
, LONG
Averaging count
Allowable setup range 1 to 256 1 to 256
Resolution
Only 9 points:
1,2,4,8,16,32,64,128,256
1
*1.The SHORT mode of the 4288A corresponds to both the SHORT and MEDIUM modes
of the 4278A.
4278A 4288A
ON/OFF of the
averaging function
The averaging function cannot be turned
ON/OFF. It is always ON (equivalent to
OFF when the averaging count is set to 1). The averaging function can be turned
ON/OFF. You have to turn ON the
averaging function when setting the
averaging count.
Table B-5 Correspondence of measurement time/averaging/trigger delay time setup
commands
Setup
GPIB command
4278A 4288A
Integration time
(measurement time)
SHORT
ITIM1 :APER SHOR
MEDIUM
ITIM2
LONG
ITIM3 :APER LONG
Averaging count
AVE= :AVER:COUN :AVER ON
4278A 4288A
Cable length 0 m, 1 m, 2 m 0 m, 1 m, 2 m
Table B-6 Correspondence of setup commands related to measurement time
Setup
GPIB command
4278A 4288A
Cable length
0 m
CABL0 :CAL:CABL 0
1 m
CABL1 :CAL:CABL 1
2 m
CABL2 :CAL:CABL 2