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
from
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
off
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.
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