Pulse Width Verification - Fluke 5820A Service Manual

Table 3-25. Wave Generator Verification at 50
Calibrator
Calibrator Mainframe
Mainframe Output
Wave Type (10 kHz)
square 2.50 V
sine 1.8 mV
sine 10.9 mV
sine 44.9 mV
sine 109 mV
sine 449 mV
sine 1.09 V
sine 2.50 V
triangle 1.8 mV
triangle 10.9 mV
triangle 44.9 mV
triangle 109 mV
triangle 449 mV
triangle 1.09 V
triangle 2.50 V

3-53. Pulse Width Verification

The following equipment is used to verify the pulse width:
High Frequency Digital Storage Oscilloscope: Tektronix 11801 with Tektronix SD-
22/26 sampling head
3 dB attenuator, SMA (m/f)
BNC(f) to SMA adapter (2)
N to BNC cable supplied with the Scope Calibrator (2)
Put the Calibrator into standby. Connect the N to BNC cable supplied with the Scope
Calibrator to the Calibrator Mainframe's CHAN 1 connector. Connect the other end of
the N to BNC cable to one BNC(f) to SMA(m) adapter then to the DSO's sampling head
through the 3-dB attenuator.
Using the second BNC(f) to SMA(m) adapter and N to BNC cable, connect the
Calibrator Mainframe's EXT TRIG (channel 5) connector to the 11801's Trigger Input.
On the Calibrator keypad, select 5. On the display, press the soft key under Pulse.
Press the soft key under TRIG to select the TRIG/1 External Trigger output. Press
on the Calibrator to activate the output.
Auto set the Digital Scope. Then set the Digital Scope to these starting values:
Main Time Base position (initial)
Vertical scale
5790A
Reading Conversion
(V rms) Factor
2.0000
2.8284
2.8284
2.8284
2.8284
2.8284
2.8284
2.8284
3.4641
3.4641
3.4641
3.4641
3.4641
3.4641
3.4641
2 ns/div
200 mV/div
Calibration and Verification
(cont.)
5790A Rdg x
Conversion V p-p Value
Factor x
(V p-p) Correction
3
Verification
Tolerance
(V p-p)
0.0751 V
0.000154 V
0.000427 V
0.001447 V
0.00337 V
0.01357 V
0.0328 V
0.0751 V
0.000154 V
0.000427 V
0.001447 V
0.00337 V
0.01357 V
0.0328 V
0.0751 V
3-53