Specifications
1-18
CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual
Table 1- 4: Trigger specifications (Cont.)
Characteristic Description
n Time-qualified trigger timer accuracy For Gl itch, Timeout, or Width t ypes
Time range Accuracy
340 ps to 1.5 s
(360 ps t o 1.8 ns typical)
±5% of setting
1.5 sto1s ±91 ns
Trigger level or threshold range Trigger Source Sensitivity
Any channel ±12 divisions from center of screen
Auxiliary input ±5V
Line ±0 V, not settable
Trigger level or threshold accuracy, typical Edge trigger, DC coupling, for signals having rise and fall times ≤1ns
Trigger Source Accuracy
Any channel ± [(2% × | setting -- net offset | ) +
(0.35 div × volts/div setting) + offset
accuracy] (≥ 10 mV/div only)
Auxiliary Not specified
where, net offset = offset -- ( position × volts/division)
B Event (Delayed) trigger Trigger After Time Trigger on n
th
Event
Range Delay time = 5 ns to 250 s Event count = 1 to 10
7
Minimum pulse width, typical — 250 ps
Minimum time between events, typical — 1ns
Trigger position error, typical Edge trigger, DC coupling, for signals having a slew rate at t he trigger point of ≥ 0.5
division/ns
Acquisition mode Error
Sample, Average ± (1 waveform interval + 200 ps)
Peak Detect, Envelope ± (2 waveform interval + 200 ps)
Trigger holdoff range 250 ns to 12 s plus random holdoff, if enabled.
Minimum resolution is 8 ns for settings ≤1.2 s. A dither of 800 ps is added to the
holdoff set ting
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