beautypg.com

7ghz spectrum analyzer operation manual ⎯ ⎯ 87 – GW Instek GSP-827 User Manual User Manual

Page 88

background image

2.7GHz Spectrum Analyzer Operation Manual

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