HP 8901B Operation And Calibration Manual page 105

Help
3-7
If
You
Need to
Know:
Refer to:
Setur,
e
How
to measure modulation or audio
without using a Sensor Module.
. . . . .
e
How
to make automated modulation or
audio measurements
.
. . . . .
. . . .
. . . . .
. .
HP-I6 (3-7)
e
How
to connect an external time base
Time Base (3-7)
Measurement
No Sensor Module (3-7)
e
How
to interpret an error code, dashes,
or questionable measurement..
. . . . . .
Solving Measurement
Problems (3-8)
No Sensor Module
HP-IB
Time Base
A
Sensor Module is not required for making modulation or
audio measurements. To make measurements without a Sensor
Module, simply connect a 50R cable and Type-N adapter f r o m
the HP 8901Bs INPUT port to the output of your signal source.
The HP 89018 enables you to fuIly automate your modulation
and audio measurements. Refer to your HP 8901B Operation and
Calibration Manual for setup and programming information.
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 89OlB automatically
switches to the external time base and
turns
o f f the time base output
when an external time base of sufficient amplitude
(0.5
Vpp) is applied
at the input. To venfy 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.