Tektronix MSO4104B Technical Reference

Performance Verification
3. Set the channel
threshold to 0 V as follows:
a. Push the Thresholds lower-bezel button (if not already selected).
b. Turn the Multipurpose a knob to select channel D0.
c. Turn the Multipurpose b knob and set the value to 0.00 V (0 V/div), using
thecoarseandfine settings of the knob as necessary to set the exact value.
4. Push the Menu Off button and then set the Horizontal Scale to 4μs per
division.
5. Set the Trigger source as follows:
a. Push the front-panel Trigger Menu button.
b. Push the Source low er-bezel button (if not already selected).
c. Turn the
Multipurpose a knob to select channel D0.
6. Set the DC voltage source (Vs) to -400 mV. Wait 3 seconds. Check the logic
level o
f the channel D0 signal display. If it is at a static logic high, change the
DC voltage source Vs to -500 mV.
7. Incre
ment Vs by +10 mV. Wait 3 seconds and check the logic level of the
channel D0 signal display. If it is a static logic high, record the Vs value
as in the 0 V row of the test record.
If the signal level is a logic low or is alternating between high and low, repeat
this step (increment Vs by 10 mV, wait 3 seconds, and check for a static logic
high) until a value for V
s-
is found.
8. Click the lower-bezel Slope button to change the slope to Falling.
9. Set the DC voltage source (Vs) to +400 mV. Wait 3 seconds. Check the logic
levelofthechannelD0signaldisplay.
If it is at a static logic low, change the DC voltage source Vs to +500 mV.
1
0.
R
educe Vs by -10 mV. Wait 3 seconds and check the logic level o f the channel
D0 signal display. If it is a static logic low, record the Vs value as V
s+
in the
0 V row of the test record.
If the signal level is a logic high or is alternating between high and low, repeat
this step (decrement Vs by 10 mV, wait 3 se conds, and check for a static logic
low) until a value for V
s+
is found.
11. Find the average using this formula: V
sAvg
=(V
s-
+V
s+
)/2. Record the average
as the test result in the test record.
Compare the test result to the limits. If the result is between the limits,
continue with the procedure to test the channel at the +4 V threshold value.
76 MSO4000B and DPO4000B Series Specifications and Performance Verification

Tektronix MSO4104B Specifications

General

Brand	Tektronix
Model	MSO4104B
Category	Test Equipment
Language	English