Edge Amplitude Verification; Edge Frequency Verification; Edge Amplification Verification - Fluke 5820A Service Manual

5820A
Service Manual

3-36. Edge Amplitude Verification

For the edge amplitude verification, connect the Calibrator Mainframe's CHAN 1
connector to the HP 3458A input, using the cable supplied with the Calibrator
Mainframe, the external 50
(The 50
1. For measurements of a 1 kHz signal, set the HP 3458A to DCV, NPLC = .01,
2. Manually lock the HP 3458A to the range that gives the most resolution for the
3. For each calibration step, take samples for at least two seconds, using the HP 3458A
4. The peak-to-peak value of the wave form is the difference between the topline and
Calibrator
Mainframe Edge
Output
100 mV, 1 kHz
1.00V, 1 kHz
5 mV, 10 kHz
10 mV, 10 kHz
25 mV, 10 kHz
50 mV, 10 kHz
100 mV, 10 kHz 1 V dc
500 mV, 10 kHz 1 V dc
1.00 V, 10 kHz
2.5 V, 10 kHz

3-37. Edge Frequency Verification

This procedure uses the following equipment:
3-30
termination is closest to the HP 3458A input.)
LEVEL 1, TRIG LEVEL, and the DELAY to .0002 for measuring the upper part of
the wave form (i.e. topline), and the DELAY to .0007 for measuring the lower part
of the wave form (i.e. baseline). For measurements of a 10 kHz signal, set the HP
3458A to DCV, NPLC = .001, LEVEL 1, TRIG LEVEL, and the DELAY to .00002
for measuring the topline, and the DELAY to .00007 for measuring the baseline.
baseline measurements. Use this same range for the corresponding baseline
measurements at each step. Note that in the EDGE function, the topline is very near
0 V, and the baseline is a negative voltage. See Table 3-14.
MATH functions to enter the average or mean value.
baseline measurements, correcting for the load resistance error. To make this
correction, multiply the readings by (0.5 * (50 + Rload)/Rload), where Rload =
actual feedthrough termination resistance. Record each reading as indicated in Table
3-14.
Table 3-14. Edge Amplification Verification
HP 3458A Topline
Range Reading
100 mV dc
1 V dc
100 mV dc
100 mV dc
100 mV dc
100 mV dc
1 V dc
10 V dc
PM 6680 Frequency Counter with an ovenized timebase (Option PM 9690 or PM
9691)
N to BNC cable supplied with the Scope Calibrator
termination, and the BNC(f) to double banana adapter.
Baseline Peak-to-
Reading Peak
Peak-to-
Peak x Tolerance
Correction ( V)
0.0022
0.0202
0.0003
0.0004
0.0007
0.0012
0.0022
0.0102
0.0202
0.0502