GW Instek GSP-827 User Manual - Manual (Page 88)

2.7GHz Spectrum Analyzer Operation Manual
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87
8.4.3 Option
Option function is to control the function of TG, Demodulator, Extern Reference Frequency
and Battery.
TG , Tracking Generator can be switched ON/OFF and its Output Level is controlled by TG
function keys. Offset offers a frequency offset between TG output and input frequency of
spectrum analyzer. It is programmable from -990kHz to 990kHz. When the offset is at
100kHz, it means the TG output frequency is 100kHz greater than spectrum analyzer.
Considering the flatness calibration of TG measurement, the Normalization is to make the
through response flat. Therefore if the frequency response test is about to performe, directly
connect the TG output and RF input with the same testing fixture to normalize first, then
connect the DUT into test. The normalization will calibrate the uneven characteristics of
fixtures used. The Ref Value allows that the normalized line of through response can be
specified at any level.
There are AM and FM in the Demodulator option. The related control like Tone and
Squelch
are also provided. The External Reference Frequency allows 13 selections that
depend on user’s application. The most common frequency 10MHz is surely included. When
the Battery Pack is installed, activating the Battery monitor will give the information of
battery status.
F1
F2
F3
F4
F5
F6
Center
Start
stop
Step
TG
ExtRef
Freq
0
1 2 3
7
6 5 4
8 9
. -
Option
Demod
Battery
Center
Start
stop
Step
TG
ON OFF
Normal
ON Off
TG
Level
Offset
Ref
Value
L
Return
Center
Start
stop
Step
FM OFF
WB NB
Volume
AM
ON OFF
Tone
FM Det
AC DC
Squelch