TB 9-6625-2021-35
SECTION III
FREQUENCY COUNTER HEWLETT-PACKARD, MODEL 5340A
6. Preliminary Instructions
process. Personnel should become familiar with the entire bulletin before beginning the
calibration.
b. Items of equipment used in this procedure are referenced within the text by common
name as listed in table 2.
c. Unless otherwise specified, verify the result of each test and, whenever the test
requirement is not met, take corrective action before continuing with the calibration.
Adjustments required to calibrate the TI are included in this procedure. Additional
maintenance information is contained in the manufacturer's manual for this TI.
perform the power supply check prior to making adjustments. After adjustments are made,
repeat paragraphs 8 through 11.
e. Unless otherwise specified, all controls and control settings refer to the TI.
7. Equipment Setup
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
OUTPUT(S) to minimum after each step within the
performance check where applicable.
a. Remove protective covers from TI as necessary to make adjustments.
b. Set line voltage SELECTOR switch (rear panel) for 115 V ac and verify that correct
fuse (as labeled on rear panel) is installed.
and adjust to 115 V ac.
d. Position controls as listed in (1) through (4) below:
(1) RESOLUTION Hz pushbutton to 1.
(2) SAMPLE RATE control fully ccw.
(3) INT-EXT switch (rear panel) to INT.
(4) RANGE switch to 10 Hz - 250 MHz.
