AOR SDU5600 Specifications download pdf (Page 34)

6-2 Monitor the VHF FM band in the spectrum analyser mode

Continue to operate the SDU5600 from section 6-1 where the SDU5600 / AR5000A+3 has been set

in the spectrum monitoring mode.

The example to the right is the actual

result which was obtained after

monitoring the signal spectrum at the

AOR headquarters in Tokyo. It indicates

the input signal being saturated,

resulting in some weak ghost signals

appearing at regular intervals close to

the floor level of the spectrum trace.

Adjust the input sensitivity

(from -30 to -20)

Press the AMPLITUDE key to display

the reference level on the LCD, which

appears in reverse contrast (-30dBm).

Rotate the main dial to select -20dBm

which lowers the input sensitivity by

10dB followed by ENT

(MHz or kHz)

Adjust the resolution bandwidth

(from 4kHz to 128kHz)

Press the RBW key to display the

resolution bandwidth value on the LCD,

which appears in reverse contrast

(4kHz). Rotate the main dial to select

128kHz followed by ENT

(MHz or kHz)

The example on the right now shows the

same result with the RBW set to

128kHz, this bandwidth is far more

suitable for monitoring FM broadcast

signals with wider band occupancy.

Refer to page 23, section 5-4-1

should you wish to operate the

CF, frequency span, etc in the

spectrum analyser mode.

Section 6-2

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AOR SDU5600 Specifications Page 34