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Bird Model 4391A Power Analyst
20
then perform a full charge again. If necessary, repeat this
discharge and charge cycle up to three times. If the batteries
do not remain charged after three discharge-charge cycles,
replace the batteries.
Calibration
The RF Power Analyst should be calibrated once each year
or after any repair.
Required
Equipment
Refer to Table 7 for test equipment needed to calibrate the
RF Power Analyst.
Table 7
Required
Calibration
Equipment
Initial Setup On a clean flat workspace perform the following setup
procedure:
1. Remove the front panel. Refer to “Front Panel Removal”
on page 24.
2. Insert a DC feed-in adapter into the FWD element of the
socket. Insert a metal dust plug (supplied with the
instrument) into the RFL element socket.
3. Connect a BNC to BNC cable assembly from the output
of calibrator/source to the DC feed-in adapter.
4. Set the RF Power Analyst range switches to the 10 and
x100 positions. Connect AC power and place the LINE/
OFF/BATT switch to the LINE setting.
WARNING
Use only NIckel Metal Hydride (NiMH) batteries that
have a minimum capacity of 4600 milliamper hours
(mAh). Do not install batteries that are not Nickel Metal
Hydride. Do not install NiMH batteries that have less
than 4600 mAh capacity. Failure to comply may result in
damage to the batteries, damage to the instrument, and
injury to personnel from battery chemicals.
Equipment Recommended Model
Calibrator/Source Keithly Model 263 or
equivalent
Cable Assembly (1 Required) BNC to BNC (1 meter long)
DC Feed-in Element (1 required) Bird Electronic 4381-050