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HP 54645D 100MHz

Mixed Signal Oscilloscope


Equipment Notes:

Like New Condition.  Comes with all the accessories seen in the photo. 

1. Logic analyzer cable, pod and 2 sets of clips.
2. Two 10070A 1x Probes

This scope does not include any rear math / communications modules.  But we have a full line of modules in stock.  Different modules will allow communications through RS232 and IEEE488.  Some modules allow advanced math functions such as FFT, Mask Testing and other advanced math functions.  Please contact us for assistance on which module might meet your needs and for pricing.




The 54645D gives you an oscilloscope like operation of both the scope and logic channels. For example, simply turn the time-base knob to set the time/division for all scope and logic channels. Press Auto-scale for the display of all active analog (scope) and digital (logic) channels. There is no scope-logic mode switch, just a seamless integration of logic channels into a scope.

Detailed Specifications: http://cp.literature.agilent.com/litweb/pdf/5968-2610EN.pdf

Vertical system, Scope channels 1 & 2

Bandwidth (3dB) dc to 100 MHz @ >= 10 mv/div (> 75 Mhz @ < 10 mv/div)
ac coupled 1.5 Hz to 100 MHz
Risetime (calculated) ~ 3.5 ns @ > 10 mv/div, (< 4.6 ns @ < 10 mv/div)
Dynamic input range 32 V or 8 div whichever is less
Math Functions Channel 1 + or - channel 2
Input resistance 1 Mohm
Input capacitance ~13pF
Maximum input 400V (dc + peak ac)
Range 1mV/div to 5V/div

Accuracy 1.5% FS
Vernier Fully calibrated, accuracy 3% FS
Single Cursor Accuracy Vertical gain accuracy 1.2% full scale 0.5% of position value
Dual Cursor Accuracy Vertical gain 0.4% of full scale
BW limit Approx. 20 MHz
Coupling ac, dc, GND
Channel isolation dc to 20 MHz >40 dB (with channels at same v/div)
20 MHz to 100 MHz >30 dB
Inversion Channel 1 and channel 2

Logic channels: 16 channels (0-15) in two pods of 8 channels each
Maximum input voltage 40 volts peak
Threshold range 6.0 volts in 50 mV increments
Threshold accuracy (100 mV + 3% of threshold setting)
Input dynamic range 10 Volts about threshold
Minimum input To meet the timing specifications the threshold
voltage overdrive value must be within 20 % of the 50% voltage
point of the input signal
Minimum input voltage swing 500 mV peak to peak
Input resistance 100 K ohm
Input capacitance Approx 8 pF
Channel-to-channel skew 2 ns typical, 3 ns max
Pre-defined thresholds TTL = 1.4V, CMOS = 2.5V, ECL = -1.3V

Horizontal system, scope and logic channels
Sweep speeds 50 s/div to 2 ns/div main and delayed
Accuracy 0.01%
Vernier Accuracy = 0.05%
Horizontal resolution 40 ps

Scope Cursor accuracy
Single channel Horizontal accuracy 0.2% of screen width 40 ps
Dual channel Horizontal accuracy 0.2% of screen width 80 ps
Delay jitter < 10 ppm

Logic cursor accuracy
Single channel Horizontal accuracy 0.2% of screen width
1 logic sample period
Dual channel Horizontal accuracy 0.2% of screen width
1 logic sample period chan-to-chan skew
Delay jitter < 10 ppm Delay range

Delay range
Pre-trigger (negative delay): At least 1 screen width or 2.5 msec
Post-trigger (from trigger point to end of sweep): 500 seconds

Delayed sweep
Delayed Sweep expansion: Delayed timebase can be as fast as 2 nsec/div
but must be at least 2X the main timebase. Delayed sweep display is an
expansion of the same data acquisition as the main.

HP MegaZoom technology (Post acquisition Pan and Zoom): The time/div
and delay controls allow any part of the acquired waveform display to
be expanded to the full extent of the memory available.
Trigger system
Modes Auto, Autolevel, & Normal
Holdoff ~ 200 ns to ~ 25 seconds
Edge triggering Rising or falling on any of
the 18 input channels
Pattern triggering A pattern of high, low, and don't-care
levels and a rising or falling edge
can be established across all 18 channels.
The analog channel's high level is defined
by that channel's trigger level.

Advanced triggering
Selectable as glitch, advanced pattern, or TV

Glitch Less than, greater than, or
within specified range
Source Any of the 18 input channels
Polarity Rising or falling
Minimum pulse width setting 8 ns
Advanced pattern Up to two trigger terms (P1 and P2) and two
edge terms (E1 and E2) may be established
and these terms can be combined as follows:
AND, OR, Then, Entered, Exited, Duration <,
Duration >, Duration range.
TV Available on scope channels only
TV line and field 0.5 divisions of composite synch
required for stable display

Oscilloscope analog triggering
Sensitivity, DC to 25 MHz > 10 mV/div <= 3.5 div or 3.5 mV
< 10 mV/div <= 1 div or 2 mV
Sensitivity, 25MHz to 100MHz > 10 mV/div <= 1 div or 10 mV
< 10 mV/div <= 1.5 div or 3 mV
Sources CH 1, CH 2, & line
Coupling dc, ac, HF reject, LF reject, noise reject
HF reject and LF reject -3dB @ 50 kHz.

Bandwidth 100 MHz
Phase error @ 1 MHz 1.8 degrees

Acquisition system
Maximum display rate 3 million samples per second with
sufficient trigger rate and vectors off.
60 full screens per second, vectors on.
Average Selectable as smoothing, 4, 8, 16, 32,
64, 128, and 256 averages.
Roll mode At sweep speeds of 200 ms/div and slower,
data moves across the display from right
to left with no dead time.

Oscilloscope acquisition system
Maximum sampling rate 200 MSa/s on each channel
Single shot bandwidth 25 MHz
Sample rate accuracy 0.01%
Simultaneous capture on both channels
Vertical resolution 8 bits
Peak detection Can capture and display a pulse at least
5 nsec wide at any timebase setting.
Maximum memory depth 1 MB samples per channel

Logic acquisition system
Vertical resolution 1 bit
Maximum sampling rate 400 MSa/s on one pod,
200 MSa/s on two pods
Sample Period Accuracy 0.01%
Simultaneous capture on all channels
Peak detection Will capture and display a pulse at least
5 nsec wide at any time base setting.
Maximum memory depth 2 MB samples per channel on one pod,
1 MB samples when both pods are used.

Display system
Display 7 inch raster monochrome CRT
Resolution 255 vertical by 500 horizontal points.
Controls Front-panel intensity
Vectors Selectable on/off
Graticle 8 X10 grid, frame, & none

Advanced features
Automatic measurements Measurements continuously updated, markers indicate measurement
Voltage V AVG (dc), V RMS, V PP, V MIN, & V MAX
Time Frequency, Period, + Pulse Width, - Pulse Width, Duty Cycle, Rise Time & Fall Time.
Cursors Manually or automatically placed Read out of time, 1/time, voltage

Setup functions
Autoscale Finds and displays all active channels, sets trigger
to highest numbered channel, sets vertical sensitivity
on active channels, time base to display 1.8 periods
Save/recall (non-volatile) 10 set-ups can be saved/recalled from non-volatile memory

Trace (pixel) memory 2 volatile

User-defined All channels may be assigned a user-defined
channel labels label of up to 6 characters. Labels displayed
in place of 1st division of waveform.

General Specifications
Calibrator Output:
Frequency ~ 1.2 kHz
Amplitude 5V

EMI Commercial Meets FTZ 1046 class B
Mil-T-28800D Meets requirements in accordance with paragraph
3.8.3 EMI Type III, and MIL-STD-461C
as modified by table XII
CE01,CE03 yes
CS01,CS02,CS06 yes
REO1v 15 dB relaxation to 20 kHz;
exceptioned from 20 kHz to 50 kHz
REO2 (with Opt 002) Full limits of class A1c and A1f
REO2 (without Opt 002) 10 dB relaxation from 14 kHz to 100 kHz
RSO2 Exceptioned
RS03 (with Opt 001) Slight trace shift from 80 Mhz to 200 mHz

Size 35.26 x 17.27 x 31.75cm
12.7W x 6.8H x 12.5D in. (excluding handle)
Weight 6.35 Kgs (~ 14 lbs)
Power usage ~90 W
Voltage 88-250 VAC
Line voltage selection Automatic
Frequency 45-440 Hz

Environmental characteristics
This instrument meets the requirements of MIL-T-28800D for Type III,
Class 3 Style D equipment as described below

Shock: HP class B1 and MIL-T-28800 style D, class 3 operating: 30g, 1/2 sine,
11 ms duration, 3 shocks per axis along major axis. Total of 18 shocks.

Vibration operation: 15 minutes along each of 3 major axes;
0.64 mm (0.025 inch) p-p displacement, 10 Hz to 55 Hz in one-minute cycles.
Held for 10 minutes at 55 Hz (4 g at 55 Hz).

Altitude: operating to 4500 M (15,000 ft), non-operating to 15,000 M (50,000 ft)

Humidity: operating 95% RH at 40 C for 24 hrs
Non-operating 90% RH at 65 C, 24 hrs
Ambient temperature: operating -10 C to 55 C,
non-operating -51 C to +71 C

Safety: CSA Certification , IEC 1010



This item is sold with a 3 Day Satisfaction Guarantee.  So bid with confidence.
As our many customers will attest, we will do our very best to resolve any customer problems. But our official policy is:

This item comes with a 3 day right of return policy.
All returns must be made within 3 days of receipt.
All warranties are void if the calibration / warranty seals are broken.
Equipment must be shipped correctly and returned with all accessories.
Customer is responsible for all shipping charges on returns.
Foreign Buyers please be aware: We offer no warranty or returns on items shipped outside the USA

Payment, Shipping & Bidding:

Buyer will pay $50.00 packing and shipping in the continental United States. Payments accepted are Paypal, cashiers checks and money orders only.  No international buyers unless Paypal verified.  Please feel free to contact us if you need other arrangements.

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About Us:

Ascent Concepts and Technologies is a Research & Development Lab. As a service to the companies and institutions we work with, we broker their excess equipment & act as application specialists on their new equipment needs. We are now offering quality used equipment to the public with the same level of professionalism and service.

Please feel free to email at thomasknox@ascentconcepts (no spam) .com or call Thomas @ 1-303-554-0307 with any Technical questions. Please feel free to email at waltwhite@ascentconcepts (no spam) .com or call Walt @ 1-720-276-8288 with any Shipping or Logistical questions. We make every effort to evaluate and guarantee our equipment. Although we do not provide NIST traceable calibration, we do have extensive in house calibration equipment and make every effort to test and verify performance on equipment we sell. However we do not warranty any items shipped outside the USA.


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The equipment shown is a representation only.  We often have multiple units in stock so please email us with your needs.  We have a large inventory and can usually find any test and measurement item in a short time frame.------Inquires info@ascentconcept.com