Do you use your scope as your primary tool for troubleshooting digital
circuits because you feel that your
problems are not complex enough for
a logic analyzer? Do you wish that
your scope had the power of a logic
analyzer without the complexity and
cost of one?
If so, these are the logic analyzers for
you. With familiar scope-like operation and high speed display, these are
logic analyzers that you can simply
set on your bench and use like your
scope. Because you are a scope user,
these are the logic analyzers that you
already know how to operate.
The Agilent Technologies 54620A/C
is designed to be used with your scope
to quickly troubleshoot and debug
your mixed signal and digital circuits.
The 54620A is the choice for tight
budget situations. Its monochrome
raster CRT display provides bright
crisp displays of our logic waveforms.
The 54620C adds a full-color active
matrix LCD display. With the addition of color, the logic analyzer’s
16-channel display is easy to use.
Colors can be used to group or highlight channels.
The Agilent 54620A/C offers:
• Scope-like control knobs
• Auto scale for one button set-up
• Trigger Input/outputs for use
with your scope
• Automatic measurements of
frequency, period, duty cycle,
width, channel-to-channel delay,
hold time, and set-up time
• Cursor measurements and
read-out of waveform values in
Hex or Binary
• Edge, pattern, and advanced
triggering
• Store/recall of 16 front panel
setups with channel labels
• Full-color active matrix LCD
display (54620C)
• Monochrome raster CRT display
(54620A)
• Optional GPIB or RS-232
remote control
• Optional hard copy to GPIB,
RS-232, or parallel printers
• Weight 6.8 kg/15 lb.
• 3-Year Warranty
Scope-like operation
The Agilent 54620A/C logic analyzers
are designed for the person whose
primary analysis tool is the oscilloscope, but often wishes for the additional power of a logic analyzer. This
logic analyzer has a control panel
that is very much like that of your
scope. Simply turn a knob, much like
you would on your scope, to make
a change in the time per division or
reposition a channel in the display.
Analyzer set-up is simplified with a
powerful Autoscale operation. Autoscale will turn on and display all
channels that have activity. The time
base will be set to give an optimally
scaled display of all active signals.
Flexible triggering
The simplest and most scope-like triggering is provided in the edge triggering mode. The pattern mode extends
the triggering to be a pattern of high,
low, and “don’t care” levels across
all 16 of the 54620A’s input channels
as well as the external trigger input
port. This pattern can be qualified
Agilent 54620A/C Logic Analyzers
Product Overview
• 16 Channels
• 500 MSa/s
• 3.5 ns Glitch Capture
• Simple Scope-Like Operation
• Full-Color Display with 54620C
2
with an edge. For those applications
where more triggering power is needed
to isolate the event of interest, the
Advanced trigger mode is available.
High speed display
An important consideration of a
troubleshooting tool is its ability
to clearly display changes in the
circuit under test. The 54620A/C
employs an advanced four processor
architecture, giving you a logic analyzer that can display changing waveforms in your system that would be
missed by more traditional analyzers.
Another benefit of the high speed
display system is that the 54620A/C
will respond instantly to your front
panel control inputs. This eliminates
a source of confusion in your troubleshooting process.
See more with color
The display of 16 logic channels can
be somewhat confusing. By the use
of color, you can group channels that
are displaying related information, or
specific channels can be highlighted.
For example, address lines can be
in one color while control lines are
displayed in other colors. Alternate
palettes allow the display to be customized for most favorable viewing.
Upgrade to meet your changing needs
You can upgrade the Agilent 54620A
logic analyzer to produce hard copies
to either printer or plotter Or, you
can interface it to a computer with
either GPIB or RS-232 interfaces.
Using the HP 34810B BenchLink
Scope for Windows, you can easily
upload the logic analyzer display to
your personal computer for preparing
a report, creating a presentation,
or storing the analyzer’s set-up for
later use.
Input Channels
Number of Channels 16 numbered 0–15
Channel Input Cable 54620-61801 with
channels grouped in two
sets of 8. Instrument
is compatible with
0650-61607 cable and
accessories.
Input R&C ~100kΩ and 8pF
Maximum Input ±40 V
Dynamic Range ±10 V about threshold
Minimum Input 500 mV peak to peak
about threshold
Minimum Input To meet timing accuracy,
Voltage Overdrive the threshold value must
be within 20% of the 50%
value of the input signal
Threshold Setting Threshold levels can be
assigned to the input
channels in groups of
8 channels (0–7 and 8–15)
and external trigger
Threshold Accuracy ± (13% of setting
± 100 mV)
Preset Threshold Levels TTL—1.5 V
CMOS—2.5V
ECL—1.3 V
Channel to Channel Skew 2.0 ns typical
3.0 ns maximum
Horizontal System
Sweep Speeds 1 s/div to 5 ns/div
Main & Delayed Sweep
Extended to 5s/div with
Autoglitch disabled
Accuracy 001% of reading
Main, Delayed sweeps,
and verniers
Horizontal Modes Main, Main and Delayed
and post acquisition pan
and zoom
Cursor Accuracy
Single Channel ± (Sample Period + 0.05%
of reading + 0.2% of
screen width)
Dual Channel ± (Sample Period + Ch
to Ch skew + 0.01% of
reading + 0.2% of screen
width)
Delay Jitter 10 ppm
Delay Range Pretrigger (Negative time)
Maximum delay is independent of time reference
(left, center, right)
Sweep Speed Maximum delay
(per division) divisions
5 ns 3,231
10 ns 1,615
20 ns 807
50 ns 323
100 ns 161
200 ns 80.7
500 ns 64.6
1 µs 16
> 1 µs 16
Post-Trigger (from trigger point to
start of sweep) from
5 ns/div to 1 µs/div—
8.829 ms
From 2 ms/div to 1 s/div
—1,048,575 times
sampling period, not to
exceed 100 s.
Delayed Sweep Delayed can be as fast
Operation as 5 ns/div but must be
at least 2X main sweep.
Post Acquisition Acquired waveforms
Pan & Zoom Operation may be panned across
the display and/or
expanded for enhanced
viewing by simply
changing time/div or
delay settings.
Acquisition System
Maximum Sample Rate 500 MSals
Resolution Single bit
Simultaneous Channels 16
Record Length 2 k samples at periods
of 8 ns and slower
(sweep speeds of
1 µs/div to 1 s/div) 8 k
samples at sampling
periods of 2 ns and 4 ns
(sweep speeds of 5 ns/div
to 500 ns/div), or all
sweep speeds when
Autoglitch mode is
disabled
Maximum Update Rate 15 full screens per
second independent of
the number of channels
being displayed.
Glitch Detect Automatically activated
at all sweep speeds
where sampling period
is slowed to be greater
than 4 ns (1 µs/div and
slower). Will detect
glitches as narrow as
3.5 ns at all activated
sweep speeds.
Trigger System
Sources All Channels & External
Auto/Normal Operation Auto will produce a
free running display if
the trigger is not found.
Normal causes the
analyzer to wait
indefinitely for a trigger
to start acquiring data.
Modes: Edge, Pattern and Advanced
Edge A single edge can be
specified on channels
0–15 and External.
Edge may be rising,
falling, or either.
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