Tektronix MDO4104 User Manual

Performance Ve ri fi cation
3. Set the channel
threshold to 0 V as follows:
a. Push the Thresholds lower-bezel button (if not already selected).
b. Select channel D0.
c. Set the value to 0.00 V (0 V/div) , using the coarse and fine settings of the
knob as necessary to set the exact value.
4. Push the Menu 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 lower-bezel button (if not already selected).
c. Select channel D0.
6. Set the D C voltage source (Vs) to -400 mV. Wait 3 seconds. Check the logic
level of the channel D0 signal display. If it is at a static logic high, change the
DC voltage source Vs to -500 mV.
7. Increment 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
level of the channel D0 signal display.
If it is at a static logic low, change the DC voltage source Vs to +500 mV.
10. Reduce Vs by -10 mV. Wait 3 seconds and check the logic level of 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 seconds, 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.
12. Set the channel threshold to +4 V as follows:
a. Push the front-panel D15-D0 button.
b. Push the Thresholds lower-bezel button.
MDO4000 Series Specifications and Performance Verification 83

Tektronix MDO4104 Specifications

General

Brand	Tektronix
Model	MDO4104
Category	Test Equipment
Language	English