HP 54520 Series User manual

ee
ye
ee
ee
Guide rvice Se
HP 54520 and HP 54540 Series
Oscilloscopes

Service Guide
Publication Number 54542-97015
First Edition, April 1994
The part number for this Service Guide
with a binder is 54542-99008
For Safety information, Warranties, and Regulatory
information, see the pages at the back of this book.
© Copyright Hewlett-Packard Company 1998, 1994
All Rights Reserved.
HP 54520 and 54540 Series
Oscilloscopes

The HP 54520 and 54540 Series
Oscilloscopes
This family of digitizing oscilloscopes provides a choice of channel count and sample
rate. The HP 54522A and 54542A have two and four channels respectively and offer
500 MHz repetitive and real-time bandwidth and a 2 GSa/s sample rate. The
HP 54520A and 54540A also have two and four channels respectively and offer
500 MHz repetitive bandwidth, but offer a lower maximum sample rate so less
real-time bandwidth.
Features
This family has a variety of high-performance features:
e Two or four signal channels. Two channel models have a front panel external
trigger.
© Up to 2 GSa/s sample rate
© dc to >500 MHz repetitive (equivalent time) bandwidth
Dedicated knobs for vertical, horizontal, and trigger functions
e 32 Kbytes of memory per channel
# 1 mV to 5 V/div channel sensitivity
* Selectable 50-Q or 1-MQ input resistance on channels and external trigger
e Sweep speeds from 500 ps/div to 5 s/div
e Internal and external trigger to >500 MHz
e Auxiliary trigger to >50 MHz
® Autoscale
e 23 automatic pulse parameter measurements
e Time tagging of sequential single-shot acquisitions
© Easy waveform storage
e 1.44-Mbyte disk drive
© Full programmability over HP-IB
e Connections for hardcopy output
Service Policy
The service policy of this instrument requires replacing defective assemblies. Some
assemblies can be replaced on an exchange basis.

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545626 24

In This Book
This
book
provides
the
service
documentation
for
the
HP
54520
and
54540
series
oscilloscopes.
It
is
divided
into
eight
chapters.
Chapter 1 provides general information and specifications.
Chapter 2 shows you how to prepare the oscilloscopes for use.
Chapter 3 gives performance tests.
Chapter
4
covers
calibration
and
adjustment
procedures,
how
to
do
them,
and
how
often
they
need
to
be
done.
Chapter 5 provides troubleshooting information.
Chapter
6
gives
the
procedures
and
techniques
for
replacing
assemblies
and
other
parts.
Chapter
7
includes
a
list
of
exchange
assemblies
and
other
replaceable
parts,
part
ordering
information,
and
shipping
information.
Chapter 8 briefly covers the internal operation of the oscilloscopes.
At
the
back
of
the
book
you
will
find
Safety
information,
Warranties,
and
Regulatory
information.
iv

Contents
General Information
Instruments Covered by This Service Guide 1-2
Accessories Supplied 1-2
Accessories Available 1-3
Options Available 1-4
Specifications 1-4
Performance Characteristics 1-5
Operating Characteristics 1-7
General Characteristics 1-16
Recommended Test Equipment 1-18
Preparing for Use
Setting Up the Oscilloscope 2-3
To inspect the instrument 2-3
To check power requirements 2-3
To set the line voltage selection 2-4
To clean the instrument 2-5
Operating the Oscilloscope 2-6
Important features of the front panel 2-6
To connect a signal 2-8
To set the instrument to a known starting condition 2-9
To measure peak-to-peak voltage 2-9
To measure a waveform period 2-10
To set the probe attenuation 2-10
To change vertical scale 2-~10
To change horizontal scale 2-11
To modify the edge trigger level 2-11
To pan and zoom ona signal 2-11
To use softkey menuitems 2-12
To save asetup to memory 2-12
To recall a setup from memory 2-12
To save a waveform to disk 2-13
To load a waveform from disk 2-13
To printhardcopy 2-14
Contents-1

Contents
3 Testing Performance
Testing Interval 3-2
Equipment Required 3-2
Self-Test Verification 3-2
Test Record 3-3
Operating Hints 3-3
Keystroke Conventions 3-3
Specifications 3-4
Performance Test Procedures 3-4
To test the de Calibrator 3-4
To test input resistance 3-5
To test voltage measurement accuracy 3-6
To test offset accuracy 3-8
To test bandwidth 3-9
To test time measurement accuracy 3-11
To test trigger sensitivity 3-15
To test the oscillator output 3~18
4 Calibrating and Adjusting
Equipment Required 4-2
Calibration Interval 4-2
Cal RAM Checksum Error 4-2
Operating Hints 4-2
Key-Down Powerup 4-3
Loading New Software 4-3
Calibration and Adjustment Procedures 4-3
Power Supply 4-4
To adjust the power supply 4-4
Main Assembly 4-5
To load the default calibration 4-5
To adjust the high-frequency pulse response 4-6
To calibrate the firmware 4-9
CRT Monitor 4-11
To adjust the display 4-11
Contents-2

Contents
5 Troubleshooting
Safety 5-2
Tools Required 5-2
ESD Precautions 5-2
Keystroke Conventions 5-2
Default Setup 5-3
Key-Down Powerup 5-3
To troubleshoot the instrument 5-3
To check power supply voltages 5-10
To check probe power outputs 5-12
To check CRT monitor signals 5-12
To check the keyboard 5-13
Troubleshooting attenuator failures 5-13
Selftest Menu 5-15
Self Cal Menu 5-16
Service Menu 5-17
Software Revisions 5-18
Registration Form 5-18
6 Replacing Assemblies
ESD Precautions 6-2
Tools Required 6-2
To return the instrument to HP for service 6-3
To remove and replace
Cover 6-4
Rear panel 6-4
Disk drive 6-5
Power supply 6-5
Keyboard 6-6
Fan 6-7
Rear panel cables 6-7
Main assembly 6-8
Attenuator 6-9
Acquisition hybrid 6-10
CRT monitor assembly 6-12
Contents-~3

Contents
7 Replaceable Parts
Ordering Replaceable Parts 7-2
Listed Parts 7-2
Unlisted Parts 7-2
Direct Mail Order System 7-2
Exchange Assemblies 7-2
Power Cables and Plug Configurations 7-3
Exploded Views 7-4
Replaceable Parts List 7-6
8 Theory of Operation
Block-Level Theory 8-3
Power Supply Assembly 8-3
CRT Monitor Assembly 8-4
Main Assembly 8-4
Front Panel 8-4
Disk Drive 8-4
Attenuators 8-4
Attenuator Theory 8-7
Main Assembly Theory 8-7
Acquisition System 8-7
System Control 8-10
Contents-4

1 General Information

Instruments Covered by This Service Guide 1-2
Accessories Supplied 1-2
Accessories Available 1-3
Options Available 1-4
Specifications 14
Performance Characteristics 1-5
Operating Characteristics 1-7
General Characteristics 1-16
Recommended Test Equipment 1-18
General Information

General Information
This chapter of the Hewlett-Packard 54520 and 54540 series oscilloscopes service
guide gives you general information about the instrument. The following topics are
covered in this chapter.
Instrument identification
Accessories
Options
Specifications and characteristics
Test equipment requirements
Accessories Supplied
The following accessories are supplied.
HP 10441A miniature passive probes (four with the HP 54540A and 54542A, two with the
HP 54520A and 54522A)
One 2.3-meter (7.5-ft) power cord (See chapter 7, "Replaceable Parts," for available power
cords)
One set of User’s and Programmer’s Guides
One Service Guide
Accessories Available
The following accessories are available for use with these oscilloscopes.
HP 10441A 10:1 1 MQ probe (2m)
HP 10430A 10:1 1MQ probe (1m)
[P 10438A 1:1 probe (1m)
IP 10439A 1:1 probe (2m)
TP 10002A 50:1 1 MQ (1000 V peak) probe
[P 10437A 1:1 50 Q probe (2m)
TP 10442A 10:1 500 Q probe (for 50 Q inputs, 2m)
IP 10443A 20:1 1000 Q probe (for 50 Q inputs, 2m)
IP 10020A Resistive Divider Probe Kit
HP 10450A SMT probe accessory kit
HP 1144A 800 MHz Active Probe
HP 01144-61604 1:2 probe power fan-out
room mo
fal

Options Available
e HP 1141A/11424 Differential Probe system
e@ HP 547014 2.5 GHz/0.6 pF Active Probe (need HP 1148A probe power)
e HP 1137A 1000:1 High voltage divider probe
e HP 1138A TV/Video Sync Pod
e HP 102114 24-pin IC Clip
e HP 10024A 16-pin IC Clip
e HP 1250-1454 BNC to Miniature Probe Adapter
e HP 1250-2427PC Board Mini-Probe Socket (horizontal mount)
e@ HP 1250-2428 PC Board Mini-Probe Socket (vertical mount)
e HP 10240B BNC Blocking Capacitor
e HP 11094B 75Q Feedthrough Termination
e HP 5062-7379 Rack Mount Kit
e HP 1494-0015 Rack Mount Slide Kit
e HP 1540-1066 Soft Carrying Case
e HP 1180A Tilt-tray Testmobile
e HP 92199B Power Strip for test: mobile
e@ HP 2227B QuietJet
e HP 92203J HP-IB to Centronics converter
MicroPrint 45CXA HP-IB to Centronics converter
e HP 7440A (Option 002) Color Pro plotter
HP 7475A (Option 002) plotter
HP 7550B (Option 005) plotter
Options Available
The following options are available for these oscilloscopes.
e Option 910 — Additional User’s and Programmer's Guide Set, and Service Guide
¢ Option 090 — Deletion of probes
® Option 908 — Rackmount kit
e Option IBN — MIL-STD Certification. Product calibration certificate in compliance with
MIL-STD-45662A.
e Option 1BP — MIL-STD Certification with data. Product calibration certificate and
performance test data report in compliance with MIL-STD-45662A.
© Option +W50 — Two additional years (five years total) of return-to-HP service.
© Option +W52 — Five years of HP Calibration service at an HP service center.
Other options are available. See your HP sales representative.
1-3

Vertical
AN
Time Base
Trigger
Chapter 1: General Information
Specitications
Specifications
The specifications are listed below. Specifications are valid after a 30 minute warm-up period.
Bandwidth (—3dB, dc coupled)
Repetitive (all models) dc to 2500 MHz (equivalent time)
Real Time
HP 54520A de to 2125 MHz
HP 545224 dc to 2500 MHz
HP 54540A dc to 2125 MHz (8 or 4 CH on), de to 2250 MHz (1 or 2 CH on)
HP 54542A dc to 2500 MHz
Rise Time !
Repetitive (all models) <700 ps
Real Time
HP 54520A <2.8ns
HP 54522A <700 ps
HP 54540A <2.8 ns (3 or 4 CH on), <1.4ns (1 or 2 CH on)
HP 54542A <700 ps
Input R (selectable) 1 MQ +1% or 50 2 +1%
Maximum Input Voltage ;
1M Q +250 V [de + peak ac(<10 kHz)]
50Q 5 Vims
Offset Accuracy ” +(1.25% of channel offset + 2% of full scale)
Voltage Measurement Accuracy (dc) 23
Dual Cursor +{1.25% of full scale + (0.032) (V/div)]
Single Cursor +[1.25% of full scale + offset accuracy + (0.016) (V/div)]
Delta-t Accuracy
Repetitive (28 averages) +[(0.005% x delta-t) + (0.1% of full scale)+ 100 ps]
Real Time 4 +(0.005% x delta-t) + (0.2 x sample period)]
Peak Detect +((0.005% x delta-t) + 1 sample period]
Sensitivity @
de to 100 MHz 100 MHz to 500 MHz
Internal 0.5 division 1.0 division
External 0.0225 x signal range 0.045 x signal range
(HP 54520A/54522A)
Auxiliary dc to 50 MHz, 250 mVp-p
14

Vertical
Performance Characteristics
Maximum Input Voltage
External Trigger (HP 54520A and 54522A)
1M Q +250 V [de + peak ac(<10 kHz)]
50 Q 5 Vims
Auxiliary Trigger +15 V
Notes:
1 Rise time figures are calculated from: tr = 0.35/Bandwidth.
2 Magnification is used below 7 mV/div range so the vertical resolution and accuracies are
correspondingly reduced. Below 7 mV/diy, full scale is defined as 56 mV.
3 The voltage measurement accuracy decreases 0.08% of full scale per 0 °C from the firmware
calibration temperature. This specification is valid for a temperature range +10 °C from the
firmware calibration temperature. The specification applies to both the repetitive and real time
modes.
4
The
specification
applies
for
bandwidth
limited
signals
(tr
=
1.4
x
sample
interval).
The
sample
interval
is
defined
as
1/(sample
rate).
The
specification
also
applies
to
those
automatic
measurements
computing
time
intervals
on
pulses
with
identical
slope
edges
(for
example,
pos-pos,
neg-neg).
Performance Characteristics
The performance characteristics are listed below.
Switchable Bandwidth Limits
ac-coupled (lower —3 dB frequency) 10 Hz
LF reject (lower —3 dB frequency) 400 Hz
Bandwidth Limit (upper -3 dB frequency) 30 MHz
Number of Channels (Simultaneous Acquisition)
HP 54520A/54522A 2
HP 54540A/54542A 4
Vertical Sensitivity Range 1 mV/div to 5 V/div
Vertical
Gain
Accuracy
(dey)?
+1.25%
of
full
scale
Vertical
Resolution”
8
bits
over
8
divisions
(+0.4%),
10
bits
over
HP-IB
with
averaging
(40.1%)
Maximum Sample Rate
HP 54520A 500 MSa/s
HP 54522A 2 GSa/s
HP 54540A 500 MSa/s (3 or 4 CH on), 1 GSa/s (1 or 2 CH on)
HP 54542A 2 GSa/s
Waveform Record Length?
Real Time 32,768 points (Selectable in powers of 2: 512, 1024, 2048 .. .)
Repetitive 501 points ;

Horizontal
Trigger
Chapter 1: General Information
Performance Characteristics
Input C 7 pF nominal
Input Coupling ac, dc
Offset Range
1mV-50 mV/div +2V
>50
mV
-
250
mV/div
+10
V
>250
mV
-
1.25
Wdiv
+50
V
>1.25 V-5 Vidiv +250V
Dynamic
Range
+(1.5
x
full
scale)
from
the
center
of
the
screen
Channel-to-channel Isolation (with channels at equal sensitivity)
de to 50 MHz 50dB
50 to 500 MHz 40dB
Time Base Range 500 ps/div to 5 s/div
Time Base Resolution 10 ps
Time
Tag
Accuracy
+(0.005%
of
reading
+
100
ps)
Time Tag Resolution 100 ps
Delay Range
Posttrigger
10’
x
sample
period
Pretrigger
32K
x
sample
period
Trigger Pulse Width (minimum)
Internal and External 1 ns
Auxiliary 15 ns
Trigger Level Range
Internal
+(1.5
x
full
scale)
from
the
center
of
the
screen
External
(HP
54520A
and
54522A)
Selectable:
+1
V,
+5
V,
425
V
Auxiliary
t5V
Auxiliary
Input
R
4kQ

FFTs
Vertical
Operating Characteristics
HP 54520A HP 54522A HP 54540A HP 54542A
Freq Range 4dcto: 250 MHz 1GHz 250 MHz (3-4 CH) 1GHz
500 MHz (1-2 CH)
Freq Resolution
inimum 977 kHz 3.9 MHz 997 kHz (84 CH) 3.9 MHz
(max samp rate)/(512 pts) 1.95 MHz (1-2 CH)
Maximum (minimum sample rate)(32768 points): 0.305 mHz (all models)
-3 dB Frequency Range dc to 500 MHz (analog bandwidth)
Frequency Accuracy 4 sample frequency + (signal frequency x 0.005%)
2x number of points
Spectrum Displays
Amplitude Power in dBm
Signal-to-noise Ratio 55 to 65 dB (typical). Noise floor can be reduced by
increasing the number of points in the FFT.
Sensitivity Range 1 dBm/div to 100 dBn/div
Dynamic Range 55 to 65 dB (typical)
Offset Range -—200 dBm to +200 dBm
Notes:
1 The gain accuracy decreases 0.08% of full scale per °C from the firmware calibration
temperature. This characteristic is valid for a temperature range +10 °C from the firmware
calibration temperature.
2 Expansion is used below 7 mV/div range so vertical resolution and accuracies are
correspondingly reduced. Below 7 mV/div full scale is defined as 56 mV.
3 The available waveform record length over HP-IB is 32,768 points in the real time mode and 500
points in the repetitive mode.
4 FFT amplitude readings are affected by input amplifier roll-off (-3dB at 500 MHz, with
amplitude decreasing as frequency increases above 500 MHz).
Operating Characteristics
The operating characteristics are listed below.
Deflection Factors All input channels: With a single screen selected, you can adjust
deflection factors from 1 mV/div to 5 V/div in a 1-2-5 sequence with the knob. You can
make fully calibrated vernier adjustments using direct keypad entry or the using the knob
with Fine selected.
Probe Attenuation Factors You can enter values from 0.9 to 1000 to scale the
oscilloscope for external probes or attenuators attached to the channel inputs. When
probe tip calibration is performed, this value is calculated automatically. The front-panel,
probe calibration source impedance is 500 Q, so with low probe impedances, automatic
calibration accuracy is dependant on the impedance of the probe.
Input Impedance 1 MQ or 50Q, selectable for channels and the external trigger.
1-7

Horizontal
Chapter 1: General Information
Operating Characteristics
Bandwidth Limit (HF Reject) A low-pass filter with a -3 dB point at about 30 MHz for
both triggering and signal display. You can select HF reject for each front-panel input
individually, whether vertical or external trigger.
LF Reject A high-pass filter with a —3 dB point at about 400 Hz for the triggering and
vertical signal. You can select LF reject for each front-panel input individually, whether
vertical or external trigger.
ac Coupling A high-pass filter with a —-3 dB point at about 10 Hz for both triggering and
signal display. You can select ac coupling for each front-panel input individually, whether
vertical or external trigger.
ECL/TTL Presets For ECL and TTL levels, you can preset the vertical deflection factor,
coupling, offset, and trigger level independently on any vertical input channel. It is not
available for the external trigger input.
Effective Resolution The maximum sample rate and the number of bits in an
oscilloscope’s digitizer are too often used for comparing oscilloscopes. These
specifications, however, do not describe performance under dynamic signal conditions.
Effective resolution is a igure of merit that describes the digitizing oscilloscope’s
performance under dynamic conditions, and is measured using the sine wave curve fit
test. This method considers:
e Quantization error
e Nonlinearities (including preamp and ADC)
e System noise
e@ Frequency of input signal
All of these affect the effective resolution of the instrument. Some manufacturers specify
effective bits using half-scale sinewaves. While the effective bits performance using half-scale
testing is overstated when compared to full-scale testing, Hewlett-Packard publishes both sets
of numbers for the oscilloscope, so that when comparing effective bits performance between
digitizing oscilloscopes, a fair comparison can be made. The oscilloscope’s typical
performance for a single acquisition is shown below:
Frequency S50kHz 1MHz 20MHz SOMHz 100MHz 250MHz 500 MHz
Fullscale 7.5 74 6.6 5.8 5.8 5.2 5.2
Halfscale 7.6 7.4 7.0 6.5 6.5 5.8 5.5
For more information about effective resolution, please contact your Hewlett-Packard sales
office, and ask for Product Note 5180A-2, Dynamic Performance Testing of A to D
Converters, (pub # 02-5952-7629).
Pan and Zoom Changing the Time/div and/or Delay values once acquisition is stopped
allows access to all captured data on each acquisition in the real-time sampling mode only.
The record length control sets the number of points (512 to 32,768) acquired with each
acquisition. The auto adjust softkey allows setting the sample rate independent of the time
base. The entire record length may be displayed when the oscilloscope is in the run mode.
Delay Between Channels You can null out differences in delay between channels to
compensate for differences in input cables or probe length using the probe null feature.
Reference Location You can set the reference point at the left edge, center, or right
edge of the display. The reference point is the trigger point plus the delay time.
1-8

Trigger
Trigger Modes
Operating Characteristics
Auto Trigger Auto trigger provides an acquisition when no trigger is present. When set
to auto, if the instrument does not see a trigger within about 50 ms, it will auto- matically
start an acquisition. When set to trg’d, it will wait for the next qualified trigger.
Trigger Holdoff Trigger can be held off either by time or events over the ranges:
e time: 40 ns to 320 ms
® events: 2 to 16,000,000
An event is defined as the specified trigger condition. A separate holdoff setting (time or
events) is available for each trigger mode except delayed trigger, which is set to 40 ns.
Holdoff is not available for the auxiliary or line trigger. The maximum event counting rate is
70 MHz.
Noise Reject Reject improves triggering on noisy signals by increasing trigger hysteresis
(internal trigger only). When selected, noise reject is active for all trigger modes.
Edge Trigger
You can select a positive or negative edge for trigger on any channel, the external trigger input
(only on the HP 54520A and 54540A), or the auxiliary input. For the channel and external
trigger sources, you can set coupling to de, ac (10 Hz) , or lfrej (low frequency reject, 50 kHz).
Trigger coupling is independent of the vertical signal coupling and noise reject. Coupling for
all sources is automatically set to dc for all trigger modes except edge trigger. You can also
select line trigger in the edge trigger menu.
Pattern Trigger
You can specify a pattern using any front panel channel or external trigger input. Each input
can be specified as a high, low, or don’t care with respect to the level setting in the edge
trigger menu. The trigger can be selected to occur on the last edge to enter the specified
pattern or the first edge to exit the specified pattern. The pattern must be present for more
than 1.75 ns (for the channels and external trigger), before the trigger will respond.
Time Qualified Pattern Trigger A trigger occurs on the first edge to exit a pattern
only if it meets the specified time criteria. The available time qualified modes are
(user-specified time is in brackets):
® pattern present < [time]
© pattern present > [time]
@ range: pattern present > [timel] and < [time2]
The time settings are adjustable from 20 ns to 160 ms (+3% +2 ns). The time filter recovery
time is <12 ns. In the "pattern present < [time]" mode, the pattern must be present for more
than 1.75 ns (for the channels and external trigger), before the trigger will respond.
Glitch Pattern Trigger Pattern triggering can be used to glitch trigger in conjunction
with a pattern. Using any front panel channel or external trigger input. Use "pattern
present < [time]" with [time] selected, such that it is just less than the nominal pulse width
of the signal you are analyzing. The minimum glitch width is 1 ns.
You can use the Glitch Trigger mode for glitch triggering on single sources with glitch widths
from 1 ns to 160 ms,
1-9

Display
Chapter 1: General Information
Operating Characteristics
State Trigger
After selecting any front panel channel or external trigger input as a clock, a pattern is
specified using any of the remaining front panel inputs. The user may specify that a trigger
will occur on the rising or falling edge of the input specified as the clock, when the pattern is
present or not present, Setup time for the pattern with respect to the clock is 10 ns or less
and hold time is zero.
Delayed Trigger
Event-Delayed Mode The trigger can be qualified by an edge, pattern, time qualified
pattern, or state. The delay can be specified as a number of occurrences of a rising or
falling edge of any one of the selected channels. After the delay, an occurrence of a rising
or falling edge of any of the three inputs will generate the trigger. The trigger occurrence
value is selectable from 1 to 16,000,000. The maximum edge counting rate is 70 MHz.
Time-Delayed Mode The trigger can be qualified by an edge, pattern, or state. The
delay is selectable from 30 ns to 160 ms. After the delay, an occurrence of a rising or
falling edge of any one of the selected channels or external trigger will generate the
trigger. The trigger occurrence value is selectable from 1 to 16,000,000. The maximum
edge counting rate is 70 MHz.
TV Trigger .
60 Hz /525 Lines Trigger source is selected to be any front-panel input. Trigger level is
adjustable for the selected trigger source. Polarity is selected for positive or negative
synchronizing pulses. <A trigger occurs on the selected line and field of a 2/1 interlaced
composite video signal. Line numbering is 1 to 263 for field 1 and 1 to 262 for field 2.
This TV trigger mode is compatible with broadcast standard M.
50 Hz / 625 Lines Same as 60 Hz/ 525 lines except that line numbering is 1 to 313 for
field 1 and 314 to 625 for field 2. This TV trigger mode is compatible with broadcast
standards B, ©, D, G, H, I, K, K1, L, and N.
User-Defined Mode Source is selected to be any front-panel input. Trigger level is
adjustable for the selected source. The trigger is qualified with a high or low pulse that
meets a selectable time range. The trigger is an occurrence of a rising or falling edge of
the source after the qualifying pulse. The time settings for the qualifier are selectable
from 20 ns to 160 ms. The trigger occurrence value is selectable from 1 to 16,000,000.
NOTE: All TV trigger modes require a clamped video signal for stable triggering. Use the
HP 1133A TV/Video Sync Pod to provide clamped video output that can be used in conjunction
with the oscilloscope’s TV triggering capabilities.
Glitch Trigger
Triggers the oscilloscope on a positive or negative glitch which is less than or greater than a
selectable setting. Settings are 2.5 ns, 5 ns, 10 ns, 20, 40, 60 ns.... The oscilloscope will
trigger on glitches from 1 ns to 160 ms. Glitch accuracy from 2.5 to 10 ns is +1.5 ns and from
20 ns to 160 ms is +(8% +2 ns).
Data Display Resolution 501 points horizontally by 256 points vertically.
Number of Screens You can select 1, 2, or 4 screens. This can provide overlapping
channels or memories for comparison, or can provide separate displays on a split viewing
area.
1-10