TE5251
User Manual
A-2
Filters
Description
Filters can be switch in and out freely except in
standard waveform shape where the filters are
automatically used by the instrument to reconstruct
the sine shape.
Type
25 MHz, Bessel; 50 MHz Bessel; 60 MHz Elliptic; 120
MHz Elliptic
General Run Modes
Description
Define how waveforms start and stop. Run modes
description applies to all waveform types and
functions, except where noted otherwise.
Continuous
Continuously free-run output of a waveform.
Waveform generation can be enabled and disabled
from a remote interface only.
Triggered
Upon trigger, outputs one waveform cycle. Last
cycle always completed
Burst
Upon trigger, outputs a single or multiple pre-
programmed number of waveform cycles. (Does
not apply to Sequence Mode). Burst is
programmable from 1 through 1M cycles
Gated
Transition enables or disables generator output.
Last cycle always completed
Mixed
Same as triggered except first output cycle is
initiated by a software trigger. Consequent output
requires external triggers through the rear panel
TRIG IN connector
Trigger Characteristics
Trigger Sources
External
Front panel BNC
BUS
Trigger commands from a remote controller only
Mixed
Operates in conjunction with the Mixed Run Mode.
External Trigger Input
Impedance
10 k
Trigger Level Range
±5 V
Resolution
1 mV
Sensitivity
200 mV
Damage Level
±12 V
Frequency Range
DC to 2 MHz
Slope
Positive/Negative transitions, selectable
Minimum Pulse Width
≥10 ns
System Delay
(Trigger input to waveform output)
6 sample clock 150 ns
Trigger Delay
(Trigger input to waveform output)
[(0; 200 ns to 20 s) + system delay]
Resolution
20 ns
Error
6 sample clock 150 ns + 5% of setting
Re-trigger Delay
(Waveform end to waveform restart)
200 ns to 20 s
Resolution
20 ns
Error
3 sample clock 20 ns + 5% of setting
Trigger Jitter
1 sample clock period
Summary of Contents for 5251
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