User manual

Table Of Contents
GPT-9000 Series User Manual
140
MANU:GB:REF
Set
Query
Sets or returns the GB reference value in mΩ. The
test must first be in GB mode before this command
can be used.
The GB reference value must be less than the HI
SET value.
MANU:GB:REF <NR2>
MANU:GB:REF?
<NR2>
0.000 ~ 649.9
MANU:GB:REF 100
Sets the GB reference to 100 m.
MANU:GB:ZEROCHECK
Set
Query
Performs the zero check function. The test must
first be in GB mode and in the Ready Status before
this command can be used.
See page 71 for details on the ZERO function.
MANU:GB:ZEROCHECK {ON|OFF}
MANU:GB:ZEROCHECK?
<ON>
Zero function is active.
<OFF>
Zero function is not active.
MANU:GB:ZEROCHECK OFF
Activates the ZERO function.