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SECTION 4
GPIB
Interface
+
Inquiry
Messages
(Cont.)
Inquiry
Parameter Name
Message
Output Format and Content of Inquiry
or Function
Header
Header
Parameter
Setting
FREQUENCY
?FR
FR
<Frequency>
Yes
Type:
NR3 (Exponent type)
Range:
120E+OO: 120Hz
lE+03: 1kHz
lOE+03: 1OkHz
1 OOE+03: 1OOkHz
No. of letters:
8 (10)
Yes
LEVEL
?LV
LV
<Measuring
signal level>
Type:
NRl (Integer)
Range:
0 = 50mVrms
1 = 1Vrms
No. of letters:
2 (4)
BIAS ON/OFF
?BO
BO
<Bias>
Yes
Type:
NRl (Integer)
Range:
0 = Off
l=On
No. of letters:
2 (4)
HEADER
?HD
HD
<Header output>
Yes
Type:
NRl (Integer)
Range:
0 = Inhibit (Not output)
1 = Admit (Ouptut)
No. of letters:
2 (4)
SERVICE REQUEST
?RQ
RQ
<Service request output>
No
Type:
NRl (Integer)
Range:
0 = Inhibit (Not output)
1 = Admit (Output)
No. of letters:
2 (4)
STATUS BYTE
?ST
ST
<Status byte>
No
Type:
NRl (Integer)
Range:
0 to 127
Converter to decimal notation and
output
No. of letters:
4 (6)
4-16
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