1155A 2-Channel, Low-Mass Active Oscilloscope Probe
Verifying probe input resistance
Verifying probe input resistance
Specification: 1.0 M& 2%
Equipment Required
EquipmentCritical SpecificationRecommended Model/Part
Digital Multimeter Resistance ?1%34401A
(DMM)
1Connect the DMM probes between the probe tip (ChA) and the ground
at the tip of the probe.
2Set up the DMM to measure resistance.
The resistance should read 1.0 M& 20 k& .
3Record resistance and repeat steps 1 through 3 for ChB.
ChA input resistance ____________.
ChB input resistance ____________.
4Enter these value in the Test Card.
Verifying probe rise time
Specification: d 470 ps
Equipment Required
EquipmentQty Critical SpecificationRecommended Model or
Agilent Part Number
Signal Generator1Square wave, <200 ps, 0 V to 1 Vp, 8131A (or equivalent)
<5% flatness, period 50 ms to
50 ?s.
Oscilloscope1 >1.5 GHz bandwidth, 50-& source54845A (or equivalent)
Terminations250 & BNC plug to BNC socket10100C (or equivalent)
Coaxial Cables350 & , low loss 10503A (or equivalent)
Adapters3BNC to SMA1250-1200
Adapter2BNC to probe tip5063-2174
Adapter2BNC to BNC1250-0080
CAUTION Allow the probe to warm up for at least 15 minutes prior to starting the
calibration tests. Failure to allow the probe to warm up may cause the probe
to fail tests.
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