Atec Tektronix-DPO7000 Series - Manual (Page 13)

Digital Phosphor Oscilloscopes — DPO7000 Series
Acquisition Modes
Mode DPO7054 / DPO7104 / DPO7254 / DPO7354
FastAcq Acquisition Mode FastAcq optimizes the instrument for analysis of
dynamic signals and capture of infrequent events
Maximum FastAcq
Waveform Capture Rate
>250,000 wfms/s on all 4 channels simultaneously
Waveform Database Accumulate waveform database providing
three-dimensional array of amplitude, time, and counts
Sample Acquire sampled values
Peak Detect Captures narrow glitches at all real-time sampling rates:
1/sample rate at ≤10 GS/s
Averaging From 2 to 10,000 waveforms included in average
Envelope From 1 to 2×10 9 waveforms included in min-max
envelope
Hi-Res Real-time boxcar averaging reduces random noise and
increases resolution
FastFrame™ Acquisition Acquisition memory divided into segments; maximum
trigger rate >310,000 waveforms per second. Time
of arrival recorded with each event. Frame finder tool
helps to visually identify transients
Roll Mode Scrolls sequential waveform points across the display
in a right-to-left rolling motion. Up to 10 MS/s with a
maximum record length of 40 M
Pinpoint ® Trigger System
Characteristic DPO7054 / DPO7104 / DPO7254 / DPO7354
Sensitivity
Internal DC Coupled 0.7 div DC to 50 MHz increasing to 1.2 div at rated
analog bandwidth (typical); 2.5 div at 3.5 GHz with DSP
bandwidth enhance
External (Auxiliary Input)
1 MΩ
250 mV from DC to 50 MHz increasing to 350 mV at
250 MHz (typical)
Trigger Characteristics
A Event and Delayed B
Event Trigger Types
Edge, Glitch, Runt, Width, Transition Time, Time-out,
Pattern, State, Setup/Hold, Window – all except Edge,
Pattern, and State can be Logic State qualified by up
to two channels
Low-speed Serial
Protocol Trigger Type
(A event only)
I 2 C, SPI, and RS-232 (standard). CAN bus available
as Opt. LSA.
Trigger on address, data, and special handshaking
states and other conditions
Main Trigger Modes Auto, Normal, and Single
Enhanced Triggering User-selectable; it corrects the difference in timing
between the trigger path and the acquired data path
(it supports all Pinpoint trigger types on both A and
B events except pattern trigger and not available in
FastAcq)
Trigger Sequences Main, Delayed by Time, Delayed by Events, Reset
by Time, Reset by State, Reset by Transition. All
sequences can include separate horizontal delay after
the trigger event to position the acquisition window in
time
Communications-related
Triggers
Requires Opt. MTM.
Support for AMI, HDB3, BnZS, CMI, MLT3, and NRZ
encoded communications signals. Select among
isolated positive or negative one, zero pulse form, or
eye patterns as applicable to the standard
Serial Pattern Trigger On DPO7254 or DPO7354 only, and requires Opt.
PTM.
Up to 64 bit serial word recognizer, bits specified in
binary (high, low, don't care) or hex format. Trigger on
NRZ-encoded data up to 1.25 Gb/s
Video-type Trigger
Formats and Field Rates
Triggers from negative sync composite video, field 1,
or field 2 for interlaced systems, any field, specific line,
or any line for interlaced or noninterlaced systems.
Supported systems include NTSC, PAL, SECAM,
and HDTV 1080/24sF, 1080p/25, 1080i/50, 1080i/60,
1080p/24, 720p/60, 480p/60
Clock Recovery System On DPO7254 or DPO7354 only and requires Opt. PTM
or MTM
Clock Recovery Phase
Locked Loop Bandwidth
Fixed at FBaud/500
Frequency Range 1.5 MBaud to 1.25 GBaud
Clock Recovery Jitter
(RMS)
20 ps
RMS
+ 1.25% Unit Interval RMS for PRBS data
patterns.
20 ps
RMS
+ 1.25% Unit Interval RMS for repeating
"0011” data pattern.
Tracking/Acquisition
Range
±5% of requested baud (typical)
Minimum Signal
Amplitude Needed for
Clock Recovery
1 div
p-p
up to 1.25 GBaud (typical)
Trigger Level Range
Internal
±12 divisions from center of screen
Aux Trigger TekVPI interface; ±5 V (50 Ω); 150 V CAT I, derate at
20 dB/decade to 9 V
RMS
above 200 kHz (1 MΩ)
Line Fixed at 0 V trigger level
Trigger Coupling DC, AC (attenuates <60 Hz), HF Rej (attenuates
>30 kHz), LF Rej (attenuates <80 kHz), Noise Reject
(reduces sensitivity)
Trigger Holdoff Range 250 ns min to 12 s max
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