Manual Supplement 5520A Operator
28 11/10
Change #4
On page 6-18, replace EXTGUARD and EXTGUARD?, with the following:
EXTGUARD
Overlapped CoupledIEEE-488 RS-232 Sequential
xx xxx
(External guard command) Connects or disconnects the internal guard shield from the LO binding
post.
Parameter: ON (external guard is on, i.e. disconnected from LO)
OFF (external guard is off, i.e. connected to LO)
Once set, the Calibrator retains the external guard setting until power off or reset.
Example: EXTGUARD ON
EXTGUARD?
Sequential Overlapped
Coupled
IEEE-488 RS-232
x x xx
x
(External guard query) Returns whether the internal guard shields are connected or disconnected
from LO binding post.
Response: (character) ON (external guard is on, i.e., disconnected from LO)
(character) OFF (external guard is off, i.e., connected to LO)
Example: EXTGUARD? returns ON
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