GW Instek GSP-930 Quick start guide - Manual (Page 51)

APPENDIX
49
1 dB Gain Compression
Total Power at 1st
Mixer > 0 dBm Typical ;Fc ≥ 50 MHz;
preamp. off
Total Power at the
Preamp > -22 dBm Typical ;Fc ≥ 50 MHz;
preamp. on
mixer power level
(dBm)= input power
(dBm)-attenuation
(dB)
Displayed Average Noise Level (DANL)
Preamp off 0 dB attenuation; RBW 10 Hz; VBW 10 Hz; span
500 Hz; reference level = -60dBm; trace average
≥ 40
9 kHz to 100 kHz < -93 dBm,
Nominal
100 kHz to 1
MHz < -90 dBm - 3 x (f/100
kHz) dB
1 MHz to 10 MHz < -122 dBm
10 MHz to 3 GHz < -122 dBm
Preamp on 0 dB attenuation; RBW 10 Hz; VBW 10Hz; span
500 Hz; reference level = -60dBm; trace average
≥ 40
100 kHz to 1
MHz < -108 dBm - 3 x (f/100
kHz) dB
Nominal 1 MHz to 10 MHz < -142 dBm
10 MHz to 3 GHz < -145 dBm + 3 x (f/1
GHz) dB
Level Display Range
Scales Log, Linear
Units dBm, dBmV, dBuV, V, W
Marker Level
Readout 0.01 dB Log scale
0.01 % of reference level Linear scale
Level Display
Modes Trace, Topographic,
Spectrogram Single / split
Windows
Number of Traces 4
Detector Positive-peak, negative-
peak, sample, normal,
RMS(not Video) Can be setup for each
trace separately
Trace Functions Clear & Write, Max/Min
Hold, View, Blank, Average