Electro-Metrics EM-2115, Instruction Manual

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ELECTRO-METRICS EM-2115 2.0 OPERATING INSTRUCTIONS
(EM2115S2-31)
The amplitude of signals appearing on the CRT can be determined by using the Threshold
Control (Slideback position only) of the receiver in conjunction with the front panel digital meter
indication.
Starting with the Threshold Control FULL CCW, rotate the Threshold Control CW (trace
line will move up the CRT display) until the trace line intersects the peak of the signal in ques-
tion. Since the digital indication of the receiver matches the trace level increase on the CRT dis-
play, the amplitude level of the signal in question is indicated by the digital meter.
The other positions of the Detector Switch--Average, Peak--will also produce valid dis-
plays on the CRT. However, the indication of signal amplitude level cannot be determined as ac-
curately for these positions since the detector time constants are weighting the swept response.