TB 9-6625-2364-24
NOTE
Due to a ground loop design problem with the 11683A option
H01 range calibrator, it will not operate properly unless ground
loops are eliminated. The instrument will continue to operate
with no power applied, and disconnecting the power cord
eliminates the problem.
WARNING
There is a small risk of mild electrical shock from the chassis of
the 11683A option H01 range calibrator unless the power
meter is connected.
NOTE
connected to the DC reference input of the range calibrator.
Ensure that the Guard and LO output of the voltage calibrator
are floating; EX GRD is on; EX SNS is off; and the V-GUARD
terminal is disconnected from the GROUND terminal.
(4) Press TI keys as listed in (a) through (d) below:
(a) Press POWER switch to on position.
(b) Press Preset Local, [Confirm] keys.
(c) Press dBm/W, [W] keys.
(d) Press Meas Setup, [Resolution] to 4.
(5) Set range calibrator controls as listed in (a) through (d) below:
(a)
RANGE to 100 mW.
(b)
POLARITY to NORMAL.
(c)
FUNCTION to STANDBY.
(d)
INT/EXT switch to EXT.
NOTE
Allow enough time for the range calibrator to settle to its zero
value before attempting to zero the TI. This settling would
appear on the TI display as downward drift. When the drift
has reached minimum, (typically less than 60 seconds) the
range calibrator is settled.
(6) Set the meter calibrator for a 0 VDC and output to STANDBY.
(7) Press TI keys as listed in (a) through (d) below:
(a) System Inputs, [A Input Settings].
(b) More, [ChA Filter], [Filter Off On] to On, [Mode Man Auto] to Man.
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