Operation
Manual 20791, Rev. C, June 2001 2-39
[
ZERO SENSOR
]
Menu F4: Initiates the zeroing of the sensors. When this softkey is pressed, the softkey menu will
change to F4-5.
Zeroing is eliminates any sensor drift. It is especially important for accurate low level measurements
(40 dBm). At very low levels (60 dBm), zeroing should be done every few minutes.
[
ZERO ALL
]
and [SENSOR (A, B, and C)]
Menu F4-5: Causes the 8003 to attempt to zero all of its calibrated sensors. Pressing SENSOR
A, SENSOR B, or SENSOR C will zero one sensor at a time.
If a supported sweeper is connected to the analyzer, the analyzer will issue an RF-OFF com-
mand via the GPIB to turn the sweeper’s RF OFF. If using non-supported sweepers (sweeper
cannot be controlled over the Private Line GPIB), it is very important to make sure that the
RF power is off to all of the sensors before pressing the ZERO ALL softkey.
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