Technical data

Testing Performance 2
6000 Series Oscilloscopes Service Guide 47
7 Press the oscilloscope User softkey, then turn the Entry
knob ( ) on the front panel on the oscilloscope to set
the threshold test settings as shown in Table 7.
8 Do the following steps for each of the threshold voltage
levels shown in Table 7.
a Set the threshold voltage shown in the User softkey
using the Entry knob on the oscilloscope.
b Enter the corresponding DC offset voltage on the
oscilloscope calibrator front panel. Then use the
multimeter to verify the voltage.
Digital channel activity indicators are displayed on the
status line at the top of the oscilloscope display. The
activity indicators for D7-D0 should show all of the
channels at digital high levels.
c Use the knob on the oscilloscope calibrator to decrease
the offset voltage, in increments of 10 mV, until the
activity indicators for digital channels D7- D0 are all at
digital low levels. Record the oscilloscope calibrator
voltage in the Performance Test Record (see page 70).
d Use the knob on the oscilloscope calibrator to increase
the offset voltage, in increments of 10 mV, until the
activity indicators for digital channels D7- D0 are all at
Table 7 Threshold Accuracy Voltage Test Settings
Threshold voltage
setting
(in oscilloscope User
softkey)
DC offset voltage setting
(on oscilloscope
calibrator)
Limits
+5.00 V +5.250 V ±1 mV dc Lower limit = +4.750 V
Upper limit = +5.250 V
–5.00 V –4.750 V ±1 mV dc Lower limit = –5.250 V
Upper limit = –4.750 V
0.00 V +100m V ±1 mV dc Upper limit = +100 mV
Lower limit = –100 mV
6000_series_service_guide.book Page 47 Friday, March 23, 2007 2:43 PM