Agilent Technologies 4288A, Programming Manual

Page: 215 / 289

Appendix B 213
Information for Replacing 4278A with 4288A
Functional Comparison and GPIB Command Correspondence
B. I
n
for
m
a
tio
n fo
r Repl
ac
in
g
427
8A
wit
h
42
88A
GPIB command correspondence
Measurement signal
Functional comparison
GPIB command correspondence
High-accuracy measurement (HI-ACC) mode
The 4288A does not have a function corresponding to the 4278A’s high-accuracy
measurement (HI-ACC) mode at the measurement frequency of 1 MHz.
Table B-2 Correspondence of measurement parameter setup commands
Measurement parameter GPIB command
Primary
parameter
Secondary
parameter
4278A 4288A
Cp
D MPAR1 :CALC1:FORM CP :CALC2:FORM D
Q
MPAR2 :CALC2:FORM Q
G MPAR3 :CALC2:FORM G
Cs
D MPAR4 :CALC1:FORM CS :CALC2:FORM D
Q
MPAR5 :CALC2:FORM Q
Rs MPAR6 :CALC2:FORM RS
4278A 4288A
Measurement frequency 1 kHz, 1 MHz 1 kHz, 1 MHz
Frequency shift (1 MHz) +2%, +1%, 0%, -1% +2%, +1%, 0%, -1%
Measurement signal
level (OSC level)
Allowable setup
range
0.1 V to 1 V 0.1 V to 1 V
Resolution 0.1 0.01
Level monitor Unavailable Current value, voltage value
Table B-3 Correspondence of measurement signal setup commands
Function
GPIB command (option number)
4278A 4288A
Measurement
frequency
1 kHz FREQ1 :SOUR:FREQ 1KHZ
1 MHz
FREQ2 :SOUR:FREQ 1MHZ
Frequency shift
*1
(1 MHz)
0% Normal :SYST:FSH 0
+1% Option 003 :SYST:FSH 1
-1% Option 005
:SYST:FSH -1
+2% Option 006 :SYST:FSH 2
Measurement signal level (OSC level) OSC= :SOUR:VOLT
*1.The frequency shift of the 4278A is fixed to a constant value, depending on the config-
uration options. No command is available to alter the value.