HP 8901B Operation And Calibration Manual page 95

Help
If
You Need to
Know:
Refer
to:
0
How to measure frequency without
using a Sensor Module..
.............
No
Sensor Module (2-8)
How
to make automated frequency
measurements.
.......................
UP-IB
(2-8)
How
to connect an external time base
Time Base
(2-8)
Measurement
0
How
to interpret an error code, dashes
or questionable measurement..
......
Solving Measurement
Problems (2-9)
NO Sensor Module A Sensor Module is not required for making RF Frequency or
Frequency Error measurements. To make measurements without a
Sensor Module, simply connect a
50R
cable and Type-N adapter from
the HP 8901B's
INPUT
port to the output of your signal source.
HP-/B
The HP 8901B enables you to fully automate your measurements. Refer
to your HP 8901B Operation and Calibration Manual for setup and
programming information.
Time Base A time base input is provided on the rear panel of the
HP
8901B.
This
input allows you to connect the HP 8901B to an external 10 MHz
time base. The time base
circuitry
within the HP 8901B automatically
switches to the external time base and turns
o f f
its time base output
when an external time base of sufficient amplitude
(0.5 Vpp) is applied
at the input. To verify that an external time base is being used, key
in 15.1 SPCL. The instrument will display a 1 if the external time
base
is
being used or a 0 if the internal time base is being used.