Chapter 2 General Operation
Connecting the 9102 Handheld Spectrum Analyzer
9102 Handheld Spectrum Analyzer Software version 5.31
15
If you want to test a device with an impedance of 75 , refer to section
“Changing the input impedance” on page 62 to adapt the 9102
settings.
RF
OUT connector RF OUT is a 50 N-type connector (male).
The link between the device under test and the 9102 Handheld Spec-
trum Analyzer may be attenuated, for example because the link is an
antenna or includes a power splitter, or a long cable. The effect of the
attenuation on the measurement results can be compensated by
entering the attenuation value in the 9102, see section “Compensating
gains and losses” on page 61.
E
XT. REF. IN/ EXT. TRIG.
connector
Can either be used as an input for an external time base (reference
clock) or as an input for an external trigger signal for the spectrum
analyzer sweep (an external device that triggers the measurement by
sending an impulse can be connected for example). Only one of the
two signal types can be connected at any one time.
See “Improving the frequency accuracy” on page 54 on how to make
use of the external time base input.
More on external trigger signals can be found in sections “Using a
trigger” on page 64 and on page 125.
Multi Port In order to provide for external adapters, amplifiers and accessories
the instrument offers a multifunction connector. The Multi Port enables
the instrument to trigger a measurement onto an external signal.
Furthermore it can be used to read data stored in external devices (e.g.
calibration data).
Headphone jack In addition to the build-in loudspeaker the instrument also offers a stan-
dard 3.5 mm headphone jack. When you connect the headphones to
the instrument the loudspeaker will be disabled automatically.
Take care of proper termination
Use of cables and sources with an impedance other than 50
results in inaccurate measurements.
WARNING
The E
XT. TRIG. input is designed for TTL input levels only. Higher lev-
els at this port can damage the instrument!
Note
The external time base feature is available in instruments with serial
number 0704001 or higher.
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