Tektronix DPO5000 Series Technical Reference

6. Set the source as follows:
a. Push the front-panel Trigger Menu button.
b. Under Source, click Select.
c. In the Source Selection box, select Ch D0. Click OK.
7. 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 high, change the
DC voltage source Vs to -500 mV.
8. 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 Vs-is found.
9. Click the lower Slope button to change the slope to Falling.
10. 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.
11. 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
Vs+ 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 Vs+ is found.
12. 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.
13. Begin the +4 V threshold test as follows:
a. Push the front-panel D15-D0 button.
b. Set the D0 Threshold value to 4.00 V (+4.0 V/div).
14. Set the DC voltage source (Vs) to +4.4 V. Wait 3 seconds. Check the logic
level of the channel D0 signal display.
If it is a static logic low, change the DC voltage source Vs to +4.5 V.
15. Decrement 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
Vs+ in the 4 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 Vs+ is found.
16. Push the front-panel Trigger Menu button.
Performance verification (MSO/DPO5000/B series)
MSO70000C/DX, DPO70000C/DX, DPO7000C, MSO5000/B, DPO5000/B Series 335

Tektronix DPO5000 Series Specifications

General

Brand	Tektronix
Model	DPO5000 Series
Category	Test Equipment
Language	English