Performance Veri
fi
cation
Check Digital Threshold
Accuracy (MSO4000B
Only)
For the MSO4000B series only, this test checks the threshold accuracy of the
digital channels. This procedure applies to digital channels D0 through D15, and
to channel threshold values of 0 V and +4 V.
1.
Connect the P6616 digital probe to the MSO4000B Series instrument, as
shown in the following illustration:
a.
Connect the DC voltage source to the digital channel D0.
b.
If you are using the Fluke 9500 calibrator as the DC voltage source,
connect the calibrator head to the digital channel D0, using the
BNC-to-0.1 inch pin adapter listed in the Required Equipment table. (See
Table 13 on page 27.)
c.
Connect channel D0 to both the corresponding signal pin and to a ground
pin on the adapter.
WARNING.
The generator is capable of providing dangerous voltages. Be sure to
set the generator to off or 0 volts before connecting, disconnecting, and/or moving
the test hookup during the performance of this procedure.
2.
Turn on the digital channels as follows:
a.
Push the front-panel
D15-D0
button.
b.
Push the
D15-D0 On/Off
lower-bezel button.
c.
Push the
Turn On D7 - D0
and the
Turn On D15 - D8
side-bezel buttons
to turn these channels On.
d.
Ensure that the side-bezel
Display
selection is
On
.
e.
The instrument will display the 16 digital channels.
MSO4000B and DPO4000B Series Speci
fi
cations and Performance Veri
fi
cation
75