Warranted Characteristics
1–18
TDS 500B, 600B and TDS 700A Service Manual
Table 1–12: Warranted Characteristics — Triggering System
Name Description
ns
t
t
, E
, Co
n
Trigger Source Sensitivity
s
t to “
C”
Any Channel
Auxiliary
TDS 620B & 644B: 0.35 division from DC to 50 MHz, increasing to
1 division at 500 MHz
TDS 680B & 684B: 0.35 division from DC to 50 MHz, increasing to
1 division at 1 GHz MHz
TDS 500B, 724A, 744A: 0.35 division from DC to 50 MHz,
increasing to 1 division at 500 MHz
TDS 784A: 0.35 division from DC to 50 MHz, increasing to
1 division at 1 GHz
TDS 600B or 784A: 250 mV from DC to 50 MHz, increasing to
500 mV at 100 MHz
TDS 500B, 724A, 744A: 400 mV from DC to 50 MHz, increasing
to 750 mV at 100 MHz
TDS 784A: 250 mV from DC to 50 MHz, increasing to 500 mV at
100 MHz
(
m
) fo
s
t
o
Time Range Accuracy
s
t
n
1 ns to 1 ms
1.02 ms to 1 s
±(20% of setting + 0.5 ns)
±(100 ns + 0.01% of Setting)
Input Signal Sync Amplitude for Stable
Triggering, NTSC and PAL modes
(Option 05 Video Trigger)
Field selection “Odd”, “Even”, or “All”: 0.6 division to 4 divisions
Field selection “Numeric”: 1 division to 4 divisions (NTSC mode)
Jitter (Option 05 Video Trigger) 60 ns
p-p
on NTSC or PAL signal
1
The minimum sensitivity for obtaining a stable trigger. A stable trigger results in a uniform, regular display triggered on
the selected slope. The trigger point must not switch between opposite slopes on the waveform, and the display must not
“roll” across the screen on successive acquisitions. The TRIG’D LED stays constantly lighted when the SEC/DIV setting
is 2 ms or faster but may flash when the SEC/DIV setting is 10 ms or slower.
Table 1–13: Warranted Characteristics — Output Ports, Probe Compensator, and Power Requirements
Name Description
Lo
L
s,
n
n
Characteristic Limits
t
ts
Vout (HI)
Vout (LO)
≥2.5 V open circuit; ≥1.0 V into a 50 W
load to ground
≤0.7 V into a load of ≤4 mA;
≤0.25 V into a 50 W load to ground
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