Chapter 2 Service
About the HP 53131A/132A Calibration Menu
Assembly-Level Service Guide 2-11
2
The Fine Time Interval Calibration requires a special calibrator signal
source to provide input—because it produces eight calibration terms, each
tailored to a different combination of input conditions. It requires the
synthesizer driving the calibrator to produce a very accurate 10 MHz
waveform—because it calibrates the pulse width configuration against the
50-nanosecond pulse width so provided. It minimizes systematic error by
calibrating the instrument in each of the eight configurations: falling to
falling edges, falling to rising edges, etc., and both SEPARATE and
COMMON routing.
Notes Pertaining to CAL: TI QUIK?
Advantage: Calibration signal is simple.
Disadvantage: One correction term for all slope and routing
configurations.
Input signal: clean square wave, fast rise time, approximately
10 MHz, 1 volt peak-to-peak, no dc offset (oscillating about 0.0 volts),
driving 50
Ω
.
Timebase: Any external timebase you provide is ignored during
calibration.
Procedure: From the front-panel calibration menu, one keypress
invokes the calibration.
Notes Pertaining to CAL: TI FINE?
Advantage: Calibration minimizes systematic error for any
supported combination of input slope and routing.
Disadvantage: Calibration signal is more complex. If you perform a
calibration that you feel is erroneous and do not feel you can perform
the fine calibration, perform the CAL: TI QUIK? calibration instead, or
restore the calibration factors that you saved prior to starting.
Equipment: HP 8130A Pulse Generator or equivalent.
HP 59992A J06 Time Interval Calibrator or equivalent.
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