GW Instek GSP-827 User Manual - Manual (Page 43)

2.7GHz Spectrum Analyzer Operation Manual
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42
Input Z 50 Ω/ 75Ω
Keep pushing Input Z key will switch the input impedance between 50 and 75Ω. The prompted
message will appear that the “zz adaptor” should be connected.
Input Z Cal
UP/DOWN and Scroll: To change offset by 0.1dB for every move.
Editing : Editing keys can adjust the offset from -10.0 to 10.0dB in 0.1 dB resolution. The ideal
number is at 5.9dB
The “Input Z Cal” performs only when the input Z is at 75Ω. In other words, when the input Z is
switched to 50Ω, the calibration value will return to 0.
Amplitude Input Z
50Ω
1
Start:99.5MHz
RBW:30 kHz
Stop:100.5MHz
VBW:100 kHz
Center:100.0MHz
Span:1.0MHz
Sweep:100.0ms
75 Ohm adaptor
Ref Lvl: 77.0 dBuV
77.0
67.0
57.0
47.0
37.0
27.0
17.0
-3.0
7.0
SAT JAN 28, 2003 14:30:25
INT:REF
AMPL CAL Ref
Level
InputZ
75Ω
Scale
5dB
Unit
dBuV
ExtGain
Loss
InputZ
Cal
1
Amplitude Input Z
Cal
Start:99.5MHz
RBW:30 kHz Stop:100.5MHz
VBW:100 kHz
Center:100.0MHz
Span:1.0MHz
Sweep:100.0ms
Input Z Loss:5.0 dB
Ref Lvl: 82.0 dBuV
82.0
72.0
62.0
52.0
42.0
32.0
22.0
2.0
-95.0
SAT JAN 28, 2003 14:30:25
INT:REF
AMPL CAL Ref
Level
InputZ
75Ω
Scale
5dB
Unit
dBuV
ExtGain
Loss
InputZ
Cal
Input Z
75Ω
0
1 2 3
7
6 5 4
8 9
. -
GHz
dBm
MHz
dBmV
kHz
dBuV
BK SP
12.