Atec Agilent-54845A - Manual (Page 6)

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Trigger (continued) 54810A, 54815A, 54820A and 54825A 54835A and 54845A
Sweep Modes Auto, triggered, single
Trigger Coupling dc, ac(7 Hz), low frequency reject (50 kHz), high frequency reject (50 kHz)
Trigger Holdoff Range 60 ns - 320 ms
Trigger Modes Edge, Glitch, Pattern, State, Delay by Time, Delay by Events, Violation (Runt, Setup/Hold Time,
Pulse width, Transition), Video, Line
Glitch Select positive or negative polarity, width. Captures glitches as narrow as 500 ps.
Pattern Select inputs as High, Low or X (don't care) to create pattern. Trigger when pattern is entered, exited,
present > t, present < t, or present over a range of time. Captures patterns as narrow as 500 ps.
State Select one channel as clock, specify other inputs as High, Low or X. Logic Type: AND or NAND.
Setup time is 1 ns and hold time is 0 ns.
Delay by Time Time: 30 ns to 160 ms. The trigger is qualified by an edge. After the delay, a rising/falling edge on any
one selected input will generate the trigger.
Delay by Events Events: 1 to 16,000,000 rising or falling edges. The trigger is qualified by an edge.
After the delay, a rising/falling edge on any one selected input will generate the trigger.
Violation Trigger
Runt Select Positive, Negative or either polarity, thresholds, time qualified. Captures runts as narrow as 500 ps.
Standard feature on models 54835A/54845A. Option 015 on models 54810A/54815A/54820A/54825A.
Setup/Hold Modes: Setup, Hold or Setup and Hold. Select Clock, thresholds, setup and/or hold time. Edges must
be
≥
1.5 ns. The difference in slew rates between clock and data must be less than a 2:1 ratio.
Pulse Width Triggers on pulse width > t, or < t. Captures pulses as narrow as 500 ps.
Transition Select Rise Time or Fall Time, present > t or present < t, thresholds. Catures edges as fast as 800 ps.
Accuracy (time) for glitch, pulse 1.5 ns - 20 ns: ±(20% setting + 500 ps)
width and time-qualified pattern 20 ns - 160 ms: ±(3% setting + 2 ns)
Video Triggering 525 lines/60 Hz (NTSC), 625 lines/50 Hz (PAL), 875 lines/60 Hz. Trigger on Field 1 or Field 2, any line.
User defined triggering: User can specify sync pulse level, width and polarity, edge number.
Display
Display
8.4 inch diagonal color active matrix LCD module incorporating amorphous silicon TFTs.
Annotation Up to 12 labels, with up to 100 characters each, can be inserted in the waveform display area.
Labels can be saved to and recalled from image files and setup files.
Active Display Area 6.73"x 5.04" (33.92 sq. in.) 171 mm x 128 mm (21,888 sq. mm)
Waveform Viewing Area 4.10"x 6.25" (25.6 sq. in.) 104 mm x 159 mm (16,536 sq. mm) in Full screen mode
Display Resolution 640 pixels horizontally x 480 pixels vertically
Persistence Minimum, Variable (Up to 6 levels of gray scale, 100 ms to 40 s), Infinite, Color Graded
Color Graded Infinite Persistence Previous sweeps are stored in differing colors based on the number of times each pixel is illuminated.
User can turn on or off, and can define colors to be used. This allows easy visual recognition of
waveform behavior over time.
Display Update Rate Real Time mode, minimum persistence display mode, triggered sweep mode, no interpolation,
Measurement Conditions markers off, math off, connect the dots off, 1 channel acquisition, 50 ns/div, statistics on
Waveforms/sec >2,100
Vpp Measurements/sec >130
Measurements
Automatic Parametrics
27 automatic measurements: V
pp
, V
min
, V
max
, V
avg
, V
amptd
, V
base
, V
top
, V
rms
, Preshoot, Overshoot,
V
upper
, V
middle
, V
lower
, Rise Time, Fall Time, Period, Frequency, Positive Width, Negative Width,
Duty Cycle, Delta Time, T
max
, T
min
, FFT Frequency, FFT Magnitude, FFT Delta Frequency,
FFT Delta Magnitude. Over HP-IB only: VTime, TVolts
Threshold Definition Selectable 10%, 20%, 50%, 80%, 90% or Custom (in % or absolute voltage) Independent thresholds
can be set for each channel.
Top-Base Definition Standard or Custom (in absolute voltage)
Statistics On/Off selectable. Current measurement, mean and standard deviation
Histograms Use vertical and horizontal waveform markers to define region to analyze. Can use in vertical (for timing and
jitter measurements) or horizontal (noise and amplitude change) modes. Measurements included: mean,
standard deviation, peak-to-peak value, median, total hits, peak (area of most hits), and mean +/ 1,2, and 3 sigma.
Eye Diagram Measurements Eye diagram display mode allows triggering on both the negative-going and positive going edges of a
signal. Eye diagram measurements include eye height, eye width, jitter, crossing percentage, Q factor,
and duty cycle distortion.
Performance Characteristics
* Denotes Warranted Specifications, all others are typical. Specifications are valid after a 30-minute warm-up period, and ±10°C (models 54810A/15A/20A/25A) or
±5°C (models 54835A/45A) from firmware calibration temperature.