GW Instek GDM-8261 Quick Start Guide - Manual (Page 11)

ADVANCED MEASUREMENT
11
A
DVANCED MEASUREMENT
Measurement item: dBm, dB, Max, Min, Relative, Hold, Compare, Math
1. Make a basic
measurement
Follow the procedures in the Basic measurement
chapter, page 8. For measurement combinations (basic
+ advanced), see page 12.
2. Press the
measurement
key
Press the measurement keys as shown below on the
front panel. The measurement result will appear on the
display.
Item Keys Descriptions
dBm SHIFT/ EXIT Shows
10*log
10
(1000*Vrdg 2 /
Rref)
dB SHIFT/ EXIT
Hz/P
dB Shows (dBm − dBmref)
Max Shows the maximum
reading
Min
x 2
Shows the minimum
reading
Relative* Shows the relative value
compared with the
reference
Hold*
HOLD
The Hold measurement
retains the current
measurement data and
updates it only when the
reading fluctuates more
than the threshold.