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Performance Tests
TDS 684A, TDS 744A, & TDS 784A Service Manual
4–21
TDS 684A Test Record (Cont.)
Instrument Serial Number: Certificate Number:
Temperature: RH %:
Date of Calibration: Technician:
TDS 684A Performance Test MaximumOutgoingIncomingMinimum
Delay Between Channels
Delay Between Channels N/A __________ __________ 100 ps
Time Base System
Long Term Sample Rate/
Delay Time @ 500 ns/10 ms
–2.0 Div __________ __________ +2.0 Div
Trigger System Accuracy
Pulse-Glitch or Pulse-Width,
Hor. scale ≤ 1 ms
Lower Limit
Upper Limit
2.5 ns
2.5 ns
__________
__________
__________
__________
7.5 ns
7.5 ns
Pulse-Glitch or Pulse-Width,
Hor. scale > 1 ms
Lower Limit
Upper Limit
1 ms
1 ms
__________
__________
__________
__________
3 ms
3 ms
Main Trigger, DC Coupled, Positive Slope 9.863 V __________ __________ 10.137 V
Main Trigger, DC Coupled, Negative Slope 9.863 V __________ __________ 10.137 V
Delayed Trigger, DC Coupled, Positive Slope 9.863 V __________ __________ 10.137 V
Delayed Trigger, DC Coupled, Negative Slope 9.863 V __________ __________ 10.137 V
CH1 Sensitivity, 50 MHz, Main Pass/Fail __________ __________ Pass/Fail
CH1 Sensitivity, 50 MHz, Delayed Pass/Fail __________ __________ Pass/Fail
CH1 AUX Trigger Input Pass/Fail __________ __________ Pass/Fail
CH1 Sensitivity, 1 GHz, Main Pass/Fail __________ __________ Pass/Fail
CH1 Sensitivity, 1 GHz, Delayed Pass/Fail __________ __________ Pass/Fail
Output Signal Checks
MAIN TRIGGER OUTPUT, 1 MW
High
Low
High ≥ 2.5 V __________
__________
__________
__________
Low ≤ 0.7 V
MAIN TRIGGER OUTPUT, 50 W
High
Low
High ≥ 1.0 V __________
__________
__________
__________
Low ≤ 0.25 V
DELAYED TRIGGER OUTPUT, 50 W
High ≥ 1.0 V __________
__________
__________
__________
Low ≤ 0.25 V
DELAYED TRIGGER OUTPUT, 1 MW
High ≥ 2.5 V __________
__________
__________
__________
Low ≤ 0.7 V