TB 9-6625-2185-35
WARNING
HIGH VOLTAGE is used or exposed during the performance
of this calibration. DEATH ON CONTACT may result if
personnel
fail
to
observe
safety
precautions.
REDUCE/DISABLE OUTPUT(S) after each step within the
performance check where applicable.
a. Remove top and
bottom covers as
needed to gain
access to
calibration switches
and adjustment locations respectively.
b. Connect sensor to TI with interconnect cable (p/o TI).
c. Connect TI to 115 V ac power source and allow a 30 minute warm-up.
d. Connect thermistor mount H75-478A to power meter.
Set power meter
NOTE
Ensure digital multimeter input jacks are isolated from
chassis ground throughout this procedure.
NOTE
Calibration factors and serial numbers of power sensors are
stored in the nonvolatile memory of TI. Owning organization
must submit meter and sensor as a unit for proper
calibration. More than one power sensor may be stored in
memory. To select a sensor, press sensor number (1 or 2)
and SELECT SENS. To check the sensor serial number
selected, press decimal (.) and SELECT SENS.
NOTE
Actual value of 20 dB attenuator (p/o TI) should be known to
be within 0.04 dB at 50 MHz prior to calibration of TI.
e. Press decimal () and SELECT SENS pushbuttons. Confirm that TI display
.
matches serial number of sensor (last four digits).
a. Performance Check
(1) Connect frequency counter to TI PWR REF. Frequency counter will indicate
between 49.5 and 50.5 MHz.
(2) Press power to OFF on power meter and remove thermistor mount from
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