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T.O. 33K3-4-3760-1
TECHNICAL MANUAL
CALIBRATION PROCEDURE
FOR
DIGITAL OSCILLOSCOPE
WAVESURFER 44MXS-B
(LECROY)
Distribution Statement C - Distribution authorized to U. S. Government agencies and thei r contractors for
official use or for administrative or operational purposes only, 28 February 2014. Requests for this
document shall be referred to AFMETCAL, 813 Irving-Wick Dr W, Heath, OH 43056-1199.
Destruction Notice - For unclassified, limited documents, destroy by any method that will prevent
disclosure of the contents or reconstruction of the document.
Published under Authority of the Secretary of the Air Force
28 FEBRUARY 2014
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T.O. 33K3-4-3760-1
DIGITAL OSCILLOSCOPE
WAVESURFER 44MXS-B
(LECROY)
1 CALIBRATION DESCRIPTION:
Table 1.
Test Instrument (TI) Performance Test
Characteristics Specifications Method
DC Accuracy Range: 2 mV to 1 V/div, 50 coupled; Compared to a standard
2 mV to 10 V/div, 1 M coupled voltage
Accuracy: (with 0 mV offset) 2 mV/div,
≤(3.5% of reading + 1.0% of FS * + 1 mV);
5 mV/div,
≤(3.0% of reading + 1.0% of FS * + 1 mV);
10 mV to 10 V/div,
≤(1.5% of reading + 1.0% of FS * + 1 mV)
DC Offset Range: 50 and 1 MΩ coupled:
2 to 99 mV/div, 1 V;
100 mV/div to 1 V/div, 10 V
1 M coupled only: 1.02 to 10 V/ di v , 100 V
Accuracy:
(1.5% of offset + 0.5% of FS * + 1 mV)
Bandwidth Range: 2 mV to 1 V/div, 50 coupled, Apply a constant amplitude
DC to 400 MHz signal while changing
frequency. Vertical
Accuracy: Down not more than 3 dB deflection compared
against deflection at a
referenced frequency
Trigger Range: All Channels (Internal) and Compared to a standard
External Trigger sources; signal
DC levels of -2.5, 0 and +2.5 major screen div;
Positive and Negative slopes
Accuracy: (4.0% of FS * + 2 mV)
Time Base Accuracy Range: 200 ps to 1000 s/div Compared to a known
frequency source
Accuracy: (5 to 40 ºC) ≤10 ppm
* FS = 8 div
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T.O. 33K3-4-3760-1
2 EQUIPMENT REQUIREMENTS:
Minimum Use Calibration Sub Noun Specifications Equipment Item
2.1 OSCILLOSCOPE Range: 0 to 30 VDC Fluke
CALIBRATOR 9500B/3200AF
Accuracy: 0.475% of setting
Range: Leveled Sinewave:
600 to 720 mV p-p,
10 kHz to 400 MHz
Accuracy: Flatness, 5%
relative to 50 kHz;
Frequency, 2.5 ppm
3 PRELIMINARY OPERATIONS:
3.1 Review and become familiar with the entire procedure before beginning the Calibration Process.
WARNING
Unless otherwise designated, and prior to beginning the Calibration Process,
ensure that all test equipment voltage and/or current outputs are set to zero (0) or
turned off, where applicable. Ensure that all equipment switches are set to the
proper position before making connections or applying power. If not strictly
observed, could result in injury to, or death of, personnel or long term health
hazards.
3.2 Connect the test equipment to the appropriate power source. Set POWER switch to ON and allow a warm-up
period as required by the manufacturer.
3.3 Connect the TI to the appropriate power source. Press the TI switch and allow a 20 minute warm-up peri od .
3.4 Throughout the Calibration Process, the TI front panel push-buttons and knobs appear in bold, the touch screen
menu selections in bold italicized, and the icon and function softkeys in italicized font.
3.5 Press TI Touch Screen to enable the touch screen as needed during the Calibration Process.
3.6 When numeric entries are required, access a soft keypad by pressing the appropriate TI function softkey twice.
3.7 Perform only those portions of the procedure that pertain to TI being calibrated.
3.8 Unless otherwise specified, the TI controls should be set for several cycles of stable display with ample
amplitude.
NOTE
The Active Head (p/o Oscilloscope Calibrator) is an integral part of the
Oscilloscope Calibrator. All connections are to be made through the Active
Head.
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4 CALIBRATION PROCESS:
NOTE
Unless otherwise specified, verify the results of each test and take corrective
action whenever the test requirement is not met, before proceeding.
4.1 DC ACCURACY CALIBRATION:
4.1.1 Set the TI controls as follows:
File Recall Setup…
Recall Default
Horizontal s ns 1.00
C1
Volts/div 2.00 mV
Bandwidth 20MHz
Averaging 5, then OK
C2
Volts/div 2.00 mV
Bandwidth 20MHz
Averaging 5, then OK
Vertical 3
Volts/div 2.00 mV
Bandwidth 20MHz
Averaging 5, then OK
Vertical 4
Volts/div 2.00 mV
Bandwidth 20MHz
Averaging 5, then OK
Measure Measure Setup…
Show Table (checked)
P1 Mean
C1
s
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P2 Mean
C2
P3 Mean
C3
P4 Mean
C4
Vertical 2 (press twice to turn channel off)
Vertical 3 (press twice to turn channel off)
Vertical 4 (press twice to turn channel off)
Close
4.1.2 Connect the Oscilloscope Calibrator to the TI 1 connector.
4.1.3 Set the Oscilloscope Calibrator for the first value listed in the Applied column of Table 2 into 1 M. Set the
OUTPUT to ON.
Table 2.
Volts/Div Applied (VDC) Limits (VDC)
2.00 m +6 m +4.630 to +7.370 m
-6 m -7.370 to -4.630 m
5.00 m +15 m +13.150 to +16.850 m
-15 m -16.850 to -13.150 m
10.0 m +30 m +27.75 to +32.25 m
-30 m -32.25 to -27.75 m
20.0 m +60 m +56.50 to +63.50 m
-60 m -63.50 to -56.50 m
50.0 m +150 m +142.75 to +157.25 m
-150 m -157.25 to -142.75 m
100 m +300 m +286.5 to +313.5 m
-300 m -313.5 to -286.5 m
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Table 2. (Cont.)
Volts/Div Applied (VDC) Limits (VDC)
200 m +600 m +574.0 to +626.0 m
-600 m -626.0 to -574.0 m
500 m +1.5 +1.4365 to +1.5635
-1.5 -1.5635 to -1.4365
1.00 +3 +2.874 to +3.126
-3 -3.126 to -2.874
2.00 * +6 +5.749 to +6.251
-6 -6.251 to -5.749
5.00 * +15 +14.374 to +15.626
-15 -15.626 to -14.374
10.0 * +30 +28.75 to +31.25
-30 -31.25 to -28.75
* DC1M coupled only.
4.1.4 Press TI Clear Sweeps and allow at least 100 sweeps as indicated on the TI display before proceeding.
4.1.5 Verify the TI P1:mean(C1) indication is within the corresponding values listed in the Limits column of
Table 2.
4.1.6 Set the Oscilloscope Calibrator OUTPUT to OFF.
4.1.7 Set the Oscilloscope Calibrator for the next value listed in the Applied column of Table 2 into 1 M. Set the
OUTPUT to ON.
4.1.8 Repeat steps 4.1.4 through 4.1.6.
4.1.9 Set TI Vertical V mV to the next value listed in the Volts/Div column of Table 2.
4.1.10 Set the Oscilloscope Calibrator for the next value listed in the Applied column of Table 2 into 1 M. Set the
OUTPUT to ON.
4.1.11 Repeat steps 4.1.4 through 4.1.8.
4.1.12 Repeat steps 4.1.9 through 4.1.11 for the remaining values listed in Table 2.
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4.1.13 Set the TI controls as follows:
C1
Volts/div 2.00 mV
Coupling DC50
Close
4.1.14 Repeat steps 4.1.3 through 4.1.12 for the applicable values listed in Table 2 with the Oscilloscope Calibrator
output impedance set to 50 .
4.1.15 Disconnect the Oscilloscope Calibrator from the TI 1 connector and connect to the TI 2 connector.
4.1.16 Press TI Vertical 1, then Vertical 2 to turn C1 off and C2 on.
4.1.17 Repeat steps 4.1.3 through 4.1.14 for TI C2, using C2 controls and settings.
4.1.18 Disconnect the Oscilloscope Calibrator from the TI 2 connector and connect to the TI 3 connector.
4.1.19 Press TI Vertical 2, then Vertical 3 to turn C2 off and C3 on.
4.1.20 Repeat steps 4.1.3 through 4.1.14 for TI C3, using C3 controls and settings.
4.1.21 Disconnect the Oscilloscope Calibrator from the TI 3 connector and connect to the TI 4 connector.
4.1.22 Press TI Vertical 3, then Vertical 4 to turn C3 off and C4 on.
4.1.23 Repeat steps 4.1.3 through 4.1.14 for TI C4, using C4 controls and settings.
4.1.24 Disconnect the test setup.
4.2 DC OFFSET CALIBRATION:
4.2.1 Set the TI controls as follows:
File Recall Setup…
Recall Default
Horizontal s ns 50.0 ns
C1
Offset 750 mV
Averaging 5, then OK
C2
Offset 750 mV
Averaging 5, then OK
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VERTICAL 3
Offset 750 mV
Averaging 5, then OK
VERTICAL 4
Offset 750 mV
Averaging 5, then OK
Measure Measure Setup
Show Table (checked)
P1 Mean
C1
P2 Mean
C2
P3 Mean
C3
P4 Mean
C4
Vertical 2 (press twice to turn channel off)
Vertical 3 (press twice to turn channel off)
Vertical 4 (press twice to turn channel off)
Close
4.2.2 Connect the Oscilloscope Calibrator to the TI 1 connector.
4.2.3 Set the Oscilloscope Calibrator Amplitude for -750 mV DC into 1 M. Set the OUTPUT to ON.
4.2.4 Press TI Clear Sweeps and allow at least 100 sweeps as indicated on the TI display before proceeding.
4.2.5 Verify the TI P1:mean(C1) indication is within -764.25 to -735.75 mV.
4.2.6 Touch TI C1, set the Offset to -750 mV, then touch Close.
4.2.7 Set the Oscilloscope Calibrator Amplitude for +750 mV DC.
4.2.8 Press TI Clear Sweeps and allow 100 sweeps as indicated on the TI display before proceeding.
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4.2.9 Verify the TI P1:mean(C1) indication is within +735.75 to +764.25 mV.
4.2.10 Set the Oscilloscope Calibrator OUTPUT to OFF.
4.2.11 Set the TI controls as follows:
C1
Offset 750 mV
Coupling DC50
Close
4.2.12 Set the Oscilloscope Calibrator Amplitude for -750 mV DC into 50 . Set the OUTPUT to ON.
4.2.13 Repeat steps 4.2.4 through 4.2.10.
4.2.14 Disconnect the Oscilloscope Calibrator from the TI 1 connector and connect to the TI 2 connector.
4.2.15 Press TI Vertical 1, then Vertical 2 to turn C1 off and C2 on.
4.2.16 Repeat steps 4.2.3 through 4.2.13 for TI C2, using C2 controls and settings.
4.2.17 Disconnect the Oscilloscope Calibrator from the TI 2 connector and connect to the TI 3 connector.
4.2.18 Press TI Vertical 2, then Vertical 3 to turn C2 off and C3 on.
4.2.19 Repeat steps 4.2.3 through 4.2.13 for TI C3, using C3 controls and settings.
4.2.20 Disconnect the Oscilloscope Calibrator from the TI 3 connector and connect to the TI 4 connector.
4.2.21 Press TI Vertical 3, then Vertical 4 to turn C3 off and C4 on.
4.2.22 Repeat steps 4.2.3 through 4.2.13 for TI C4, using C4 controls and settings.
4.2.23 Disconnect the test setup.
4.3 BANDWIDTH CALIBRATION:
4.3.1 Set the TI controls as follows:
File Recall Setup…
Recall Default
Horizontal s ns 20.0 µs
C1
Volts/div 100 mV
Coupling 50ΩDC
Averaging 5, then OK
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C2
Volts/div 100 mV
Coupling 50ΩDC
Averaging 5, then OK
VERTICAL 3
Volts/div 100 mV
Coupling 50ΩDC
Averaging 5, then OK
VERTICAL 4
Volts/div 100 mV
Coupling 50ΩDC
Averaging 5, then OK
Measure Measure Setup…
Show Table (checked)
P1 Peak to peak
C1
P2 Peak to peak
C2
P3 Peak to peak
C3
P4 Peak to peak
C4
Vertical 2 (press twice to turn channel off)
Vertical 3 (press twice to turn channel off)
Vertical 4 (press twice to turn channel off)
Close
4.3.2 Connect the Oscilloscope Calibrator to the TI 1 connector.
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4.3.3 Set the Oscilloscope Calibrator for a 600 mV p-p leveled sine wave at 50 kHz into 50 . Set the OUTPUT to
ON.
4.3.4 Adjust TI Trigger Level as necessary for a stable display.
4.3.5 Adjust the Oscilloscope Calibrator output controls for a TI P1:pkpk(C1) indication of as close as possible to
600 mV.
4.3.6 Press TI Clear Sweeps and allow at least 100 sweeps as indicated on the TI display.
4.3.7 Set the Oscilloscope Calibrator Frequency to 400 MHz.
4.3.8 Adjust the TI Horizontal controls as necessary for several cycles of display. Touch TI Timebase, Horizontal
Setup, set the Sampling Mode to RIS, then touch Close.
4.3.9 Press TI Clear Sweeps and allow at least 100 sweeps as indicated on the TI display.
4.3.10 Verify the TI P1:pkpk(C1) average indication is 425 mV.
4.3.11 Set the Oscilloscope Calibrator OUTPUT to OFF.
4.3.12 Disconnect the Oscilloscope Calibrator from the TI 1 connector and connect to the TI 2 connector.
4.3.13 Press TI Vertical 1, then Vertical 2 to turn C1 off and C2 on.
4.3.14 Touch TI Timebase, Horizontal Setup, RealTime, then set the Time/Division to 20.0 µs.
4.3.15 Touch TI Trigger, Trigger Setup, Source, C2, then Close.
4.3.16 Repeat steps 4.3.3 through 4.3.11 for TI C2, using C2 controls, settings and readouts.
4.3.17 Disconnect the Oscilloscope Calibrator from the TI 2 connector and connect to the TI 3 connector.
4.3.18 Press TI Vertical 2, then Vertical 3 to turn C2 off and C3 on.
4.3.19 Touch TI Timebase, Horizontal Setup, RealTime, then set the Time/Division to 20.0 µs.
4.3.20 Touch TI Trigger, Trigger Setup, Source, C3, then Close.
3.21 Repeat steps 4.3.3 through 4.3.11 for TI C3, using C3 controls, settings and readouts.
4.
4.3.22 Disconnect the Oscilloscope Calibrator from the TI 3 connector and connect to the TI 4 connector.
4.3.23 Press TI Vertical 3, then Vertical 4 to turn C3 off and C4 on.
4.3.24 Touch TI Timebase, Horizontal Setup, RealTime, then set the Time/Division to 20.0 µs.
4.3.25 Touch TI Trigger, Trigger Setup, Source, C4, then Close.
4.3.26 Repeat steps 4.3.3 through 4.3.11 for TI C4, using C4 controls, settings and readouts.
4.3.27 Disconnect the test setup.
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4.4 TRIGGER CALIBRATION:
4.4.1 Set the TI controls as follows:
File Recall Setup…
Recall Default
Horizontal s ns 10.00
C1
Volts/div 100 mV
Coupling 50ΩDC
Averaging 10, then OK
C2
Volts/div 100 mV
Coupling 50ΩDC
Averaging 10, then OK
Vertical 3
Volts/div 100 mV
Coupling 50ΩDC
Averaging 10, then OK
Vertical 4
Volts/div 100 mV
Coupling 50ΩDC
Averaging 10, then OK
Cursors Cursors Setup…
Horizontal (Time)
X1 0.0 ns
X2 0.0 ns
Vertical 2 (press twice to turn channel off)
Vertical 3 (press twice to turn channel off)
s
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Vertical 4 (press twice to turn channel off)
Close
4.4.2 Connect the Oscilloscope Calibrator to the TI 1 connector.
4.4.3 Set the Oscilloscope Calibrator for a 10 kHz, 700 mV p-p leveled sinewave into 50 . Set the OUTPUT to
ON.
4.4.4 Adjust the Oscilloscope Calibrator for 7. 2 d i v o f v e rtical deflection on t h e T I d i s p l a y .
4.4.5 Press TI Clear Sweeps and allow at least 10 sweeps as indicated on the TI display.
4.4.6 Verify the TI C1 ↓ and ↑ (cursors) indications are within -34.0 to +34.0 mV.
4.4.7 Touch TI Trigger, Trigger Setup, set the slope to Negative, then touch Close.
4.4.8 Repeat steps 4.4.5 and 4.4.6.
4.4.9 Touch TI Trigger, Trigger Setup, set the slope to Positive, Level to +250 mV, then touch Close.
4.4.10 Repeat steps 4.4.5 through 4.4.8 verifying the TI C1 ↓ and ↑ (cursors) indications are within +216 to
+284 mV when performing step 4.4.6.
4.4.11 Repeat steps 4.4.9 and 4.4.10 for a TI trigger level setting of -250 mV, verifying the C1 ↓ and ↑ (cursors)
indications are within -284 to -216 mV.
4.4.12 Set the Oscilloscope Calibrator OUTPUT to OFF.
4.4.13 Disconnect the Oscilloscope Calibrator from the TI 1 connector and connect to the TI 2 connector.
4.4.14 Press TI Vertical 1, then Vertical 2 to turn C1 off and C2 on.
4.4.15 Set the TI controls as follows:
Trigger
Trigger Setup
Slope Positive
Source C2
Close
4.4.16 Set the Oscilloscope Calibrator OUTPUT to ON.
4.4.17 Repeat steps 4.4.4 through 4.4.12 for TI C2 using the C2 controls and settings.
4.4.18 Disconnect the Oscilloscope Calibrator from the TI 2 connector and connect to the TI 3 connector.
4.4.19 Press TI Vertical 2, then Vertical 3 to turn C2 off and C3 on.
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4.4.20 Set the TI controls as follows:
Trigger
Trigger Setup
Slope Positive
Source C3
Close
4.4.21 Set the Oscilloscope Calibrator OUTPUT to ON.
4.4.22 Repeat steps 4.4.4 through 4.4.12 for TI C3 using C3 controls and settings.
4.4.23 Disconnect the Oscilloscope Calibrator from the TI 3 connector and connect to the TI 4 connector.
4.4.24 Press TI Vertical 3, then Vertical 4 to turn C3 off and C4 on.
4.4.25 Set the TI controls as follows:
Trigger
Trigger Setup
Slope Positive
Source C4
Close
4.4.26 Set the Oscilloscope Calibrator OUTPUT to ON.
4.4.27 Repeat steps 4.4.4 through 4.4.12 for TI C4 using C4 controls and settings.
4.4.28 Disconnect the test setup.
4.5 TIME BASE ACCURACY CALIBRATION:
4.5.1 Set the TI controls as follows:
File Recall Setup…
Recall Default
Horizontal s ns 500 ms
Vertical 2 (press twice to turn channel off)
C1
Volts/div 100 mV
Coupling 50ΩDC
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Trigger Normal
Measure Measure Setup…
Show Table (checked)
P1 Frequency
C1
Close
4.5.2 Connect the Oscilloscope Calibrator to the TI 1 connector.
4.5.3 Set the Oscilloscope Calibrator for a 600 mV p-p leveled sinewave at 10 MHz into 50 . Set the OUTPUT to
ON.
4.5.4 Verify the TI P1:freq(C1) indication is within -100 to +100 Hz.
4.5.5 Set the Oscilloscope Calibrator OUTPUT to OFF.
4.5.6 Set all POWER switches to OFF or STBY. Disconnect and secure all equipment.
CALIBRATION PERFORMANCE TABLE
Not Required
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