5520A
Service Manual
6-22
Note
The Calibrator Mainframe will warn when the entered value is out of
bounds. If this warning occurs recheck the setup and carefully re-enter the
reading insuring proper multiplier (i.e., m, u, n, p). If the warning still
occurs, repair may be necessary.
3. Repeat step 2 until the Calibrator Mainframe display indicates that the next steps
calibrate WAVEGEN. Press the OPTIONS, then STORE CONSTS blue softkeys to
store the new calibration constants.
6-35. Wave Generator Calibration
This procedure uses the following equipment:
• Hewlett-Packard 3458A Digital Multimeter
• BNC(f) to Double Banana adapter
• BNC cable supplied with the SC600
Within the calibration menu, press the OPTIONS and NEXT SECTION blue softkeys
until the display reads “WAVEGEN Cal:”. Then follow these steps to calibrate the Wave
Generator:
1. Connect the Calibrator Mainframe’s SCOPE connector to the HP 3458A input, using
the BNC cable and the BNC(f) to Double Banana adapter.
2. Set the HP 3458A to DCV, NPLC = .01, 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). Manually
range lock the HP 3458A to the range that gives the most resolution for the topline
measurements. Use this same range for the corresponding baseline measurements at
each step.
3. For each calibration step, take samples for at least two seconds, using the HP 3458A
MATH functions to retrieve the average or mean value. See “Setup for SC600 Edge
and Wave Generator Measurements” for more details.
6-36. Edge Amplitude Calibration
This procedure uses the following equipment:
• Hewlett-Packard 3458A Digital Multimeter
• BNC(f) to Double Banana adapter
• BNC cable supplied with the SC600
• 50 Ω feedthrough termination
Refer to Figure 6-3 for the proper setup connections. Press the OPTIONS and NEXT
SECTION blue softkeys until the display reads “Set up to measure fast edge
amplitude”. Then follow these steps to calibrate edge amplitude:.
1. Connect the Calibrator Mainframe’s SCOPE connector to the HP 3458A input, using
the BNC cable and the BNC(f) to Double Banana.
2. Set the HP 3458A to DCV, NPLC = .01, 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). Manually lock
the HP 3458A to the range that gives the most resolution for the baseline
measurements. Use this same range for the corresponding baseline measurements at
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