TB 9-6625-2339-24
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.
NOTE
Throughout this procedure soft keys are identified by the use of
brackets [ ] around the key.
NOTE
Ensure proper calibration factors for sensor module being used
are loaded into measuring receiver.
a. Connect TI to 115 V ac power source.
b. Connect equipment as shown in figure 1.
Figure 1. Frequency reference setup.
c. Press LINE pushbutton to ON and record the power on time.
d. Ensure TI is not in external reference mode.
NOTE
For model E4407B, perform e through q and x through z
below. For all other models perform r through w and x
through z below.
e. Set up frequency counter to measure frequency to 0.1 Hz resolution.
f. Wait for frequency counter to stabilize and record reading as "Counter Reading 1".
g. Press TI keys System, [Alignments], [Timebase], [Fine].
h. Record the number in TI active function block as "Timebase Fine".
