EM-2115 APPENDIX A DESCRIPTION FRONT PANEL CONTROLS
(EM2115A-6)
A-7.0 Detection Switch
Type:
Momentary pushbutton switch.
Indicator:
None.
Function:
To select one of five detector functions: Peak, Quasi-Peak, RMS, Av-
erage, Slideback.
NOTE:
Refer to Section II Paragraph 2.4.6 Detector Mode Selec-
tion (Pages 2-11 thru 2-20) for more complete information
on each detector function.
a. Peak
The peak detector circuit produces a true peak response to the input signal
in terms of a calibrated rms sinewave of equivalent peak value. The rise
time is less than 1 µs and a fall time greater than 10 second with the Sam-
ple Time Control FULL CCW.
b. Quasi-Peak
The quasi-peak detector produces measurements that conform to ANSI
C63.2-1980, CISPR Publication 16, and related VDE requirements. Refer
to Table 1.4 (Section I, Page 1-10) for complete pass band and time con-
stant specifications.
b-1 Sample Time Control
Type:
Composition single turn, 280
rotation, 100 k
with integrated
switch. Switch activated at start of clockwise rotation.
Function:
Used to adjust the length of time the peak detection or quasi-
peak detection circuit holds a signal level.
Sample Time Control (click stop) FULL CCW:
Provides the maximum
hold time for the peak circuit, 10 seconds (approx.).
Sample Time Control FULL CW:
Provides the minimum hold time, 50
ms (approx.).
NOTE:
1) Refer to Table 2.2 (Page 2-13) for more detailed hold
time information.
2) This control also sets the reset/update rate for the over-
load indicator circuit. For most measurements, the Sample
Time Control is set to mid-range. A FULL CCW position
Содержание EM-2115
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