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HP 54720D Four-channel, 8 GSa/s Real-time Modular Oscilloscope Mainframe![]()
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The HP 54720D allows sample rates to 8 GSa/s and a single-shot analog bandwidth of 2-GHz. Each of the four 2 GSa/s A/Ds have 64K of memory allowing 256k points of acquisition at the maximum sample rate.
Available modules include:
Time-Interval Measurement Accuracy Specifications
Real Time ą[(0.2)(sample interval) + 0.007% of delta-time marker reading] Equivalent Time ą(30 ps + 0.007% of delta-time marker reading) (16 averages)
Typical Channel Characteristics
ADC Input Sources (simultaneous 4 plug-in slots, each having its own 2-GSa/s acquisition) ADC. Acquisition memory is 65,536 points per slot. Best Accuracy Calibration Performing the best accuracy cal on a channel just prior to a series of critical measurements will ensure the most accurate results. This cal adjusts the channel s gain, offset, and linearity, and requires a specific plug-in to stay installed in a specific mainframe slot. Channel Skew Adjustment The time skew between channels can be manually eliminated all the way to the probe tip to 1-ps resolution. Probe Calibration A probe calibration routine automatically computes the offset and attenuation created by the probe attached to the channel input.
Typical Time Base Characteristics
Time Base Scale (fullscreen is 10 divisions) 100 ps/div to 20 s/div (in 1-2-5 or fine steps) Time Base Position Range (auto sample rate and record length) Pretrigger: 0 to 10 s or one fullscreen width, whichever is larger. Posttrigger: 0 to 10 s or one fullscreen width, whichever is larger. Trigger Interpolator Resolution: 1 ps Time Base Window Scale: 1 ps/div to the main time base scale factor Position: The window must always stay in the time window defined by the main sweep.
Typical Triggering Characteristics
Sources All four input plug-in slots can be used for triggering. See plug-in specifications for more details. Edge Slope Positive/negative Holdoff Range 60 ns to 320 ms Pattern Trigger A pattern can be specified using any channel or external trigger input (up to four bits wide). Each of the inputs can be specified as high, low, or don t care with respect to the trigger level setting for that source. Trigger occurs when that pattern is entered or exited. Glitch Trigger This mode makes it easy to look for glitches greater than or less than specified width on a single source. You can distinguish glitches down to 3 ns ą1 ns in width and can capture glitches as narrow as 500 ps in width. Time-Qualified A trigger will occur on the first edge to exit Pattern Trigger a pattern only if it meets one of these 3 criteria: 1) pattern present <[time] 2) pattern present >[time] 3) pattern present in range >[time1] and <[time2]. The time settings are adjustable from 20 ns to 160 ms [ą(3% + 2 ns)] with 10 ns resolu- tion. Filter recovery time is <=12 ns. State Trigger A pattern is specified on any three ofthe four inputs, with the fourth input used as a clock. Trigger occurs on the rising or falling edge of the input specified as the clock, and when the pattern is present or is not present. Setup time for the pattern with respect to the clock is 10 ns or less; hold time is zero. TV Trigger Standard TV systems: 525 lines 60 Hz 625 lines 50 Hz 875 lines 60 Hz User defined Event-Delayed Trigger The trigger is qualified by an edge. The delay can be specified as a number of occurrences of a rising or falling edge of any of the inputs. After the delay, an occurrence of a rising or falling edge of any of the 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. Edges occurring <30 ns after the qualifying edge may not be detected. Time-Delayed Trigger The trigger is qualified by an edge.The delay is selectable from 30 ns to 160 ms. After the delay, an occurrence of a rising or falling edge on any one selected input will generate the trigger.
Functions and Measurements
Functions Magnify Invert Add Subtract Multiply Divide Versus Integrate Differentiate Min Max FFT (mag) Histograms Measurement limit testing Waveform mask testing Color graded display Measurements V(ampltd) V(base) V(top) Preshoot Overshoot V p-p V(time) V(min) V(max) V(rms) V(avg) V(upper) V(middle) V(lower) FFT(freq) FFT(mag) FFT(deltafreq) FFT(deltamag) Duty cycle Delta time Period Frequency T(fall) T(rise) T(max) T(min) T(volt) + width - width Histograms p-p median mean std dev u ± 1 sigma u ± 2 sigma u ± 3 sigma hits peak Autoscale Can find repetitive signals: > 50 Hz < 1/2 max sample rate duty cycle > 1 % amplitude> 50 mV p-p (HP 54722A > 150 mV p-p)
Display Update and HPIB Throughput
Maximum Display Update Rate: 550 Kpixels/s typical Maximum HP-IB Transfer Rate: 500 Kbytes/s typical Throughput Waveforms/second Measurements/second ------------------------------------------------------------------- Measurement Vpp Period ------------------------------------------------------------------- Front Panel Capture > 170 > 44 > 39 and Transfer Rate ------------------------------------------------------------------- HP-IB Capture and > 50 > 33 > 31 Transfer Rate ------------------------------------------------------------------- This throughput data was taken in the real-time sampling mode (250 MSa/s) with 512-point records on screen, no measurements, no inter- polation, fast draw mode, infinite persistence, markers off, math off, and one channel acquisition. Vpp does not require threshold detection, but Period does.
Effective Bits
Effective Bits 1 MHz 10 MHz 100 MHz 250 MHz 500 MHz 1 GHz (HP 54721A System) ------------------------------------------------------------------- Real Time (4 GSa/s) with fs/4 filter interpolation 7.5 7.5 7.2 6.7 6.7 6.2 without fs/4 filter interpolation 7.0 7.0 6.6 6.1 5.9 5.3 ------------------------------------------------------------------- Digital Bandwidth Limit (fs/20 FIR 8.0 7.9 8.2 7.8 - - Filter) ------------------------------------------------------------------- Typical effective bits of resolution describes the dynamic perfor- mance of an ADC sine wave curve fit test. The inputs used are 90% of full scale amplitude sine waves.
FFT
Update rate for 1024 point record is 70 ms. Magnitude accuracy 0.26 db (3%) near dc to -3 db at max bandwidth.
Environmental Characteristics
Temperature Operating +10° C to +40° C Nonoperating -40° C to +70° C Humidity Operating Up to 95% relative humidity (noncondensing) at +40° C Nonoperating Up to 90% relative humidity at +65° C Altitude Operating Up to 4,600 meters (15,000 feet) Nonoperating Up to 15,300 meters (50,000 feet) Voltage 90 to 132 or 198 to 264 VAC, 48 to 66 Hz Power 1200 VA; 650 W Weight Net 26.4 kg (58 lbs) Shipping 33.6 kg (74 lbs)
HP 54720D Four-channel, 8-GSa/s real-time modular oscilloscope mainframe Opt 002 Training kit including a PC board, a demo guide, and a power supply (HP P/N 54720-68701 + 9100-4503 USA only) Opt 907 Rackmount kit (handles only) (HP P/N 54710-68703) includes long screws Opt 908 Rackmount kit (ears only) (HP P/N 54710-68704) includes special long screws Opt 909 Rackmount kit with handles (HP P/N 54710-68705) includes long screws Opt 0B1 One additional User s and Programmer s Book Set (English only)
Plug-Ins HP 54711A 50-W attenuator plug-in with external trigger HP 54712A 50-W amplifier plug-in with internal trigger HP 54713B 50-W/1-MW, amplifier plug-in with internal trigger HP 54714A 2-channel plug-in HP 54715A Single channel differential probe HP 54717A cal plug-in (for yearly mainframe calibration) HP 54721A 2-slot amplifier plug-in (4 GSa/s sample rate) HP 54722A 4-slot attenuator plug-in (8 GSa/s sample rate) HP 54700A filler panel Options Available for Each Plug-in: Opt 090 Delete probe (HP 54713B plug-in only) Opt 0B1 One additional User s and Programmer s Book Set (English only) Opt 1AK HP 54714A & 54722A delete media option
Support Options These support options are available at time of purchase. Yearly contracts can be purchased through your local service center. Each option applies to one specific model and serial number. +W30 Three years of return-to-HP service. +W32 Three years of HP Calibration service at HP service center. Opt 1BN Mil-std calibration. Product calibration certificate in compliance with MIL-STD-45662A. Opt 1BP Mil-std cal with data report. Product calibration certificate and performance test data report in compliance with MIL-STD-45662A.
Probes and Probing Accessories HP 54701A 2.5-GHz active probe Option 001 Add APC 3.5(f) bulkhead to N-type(f) adapter to use with the HP 54120 Option 0B1 One additional User and Service guide (English only) HP 1141A Differential Probe HP 1142A Probe Control and Power Module HP 1143A Probe Power Supply Option 001 One 1.5 meter probe power cable extension cord (HP P/N 01143-61602) Option 0B1 One additional User and Service Guide (English only) HP 54006A 6-GHz passive probe HP 10430A 500-MHz, 6.5-pF passive probe (1 m) HP 10441A 500-MHz, 9-pF passive probe (2 m) HP 1141A 200-MHz differential probe (Order HP 1142A also) HP 1142A probe power supply HP 1137A 1000:1 high-voltage divider probe (500 MW, 3 pF, 1-MHz bandwidth) HP 1133A TV/video sync pod HP 54300A 16-to-2 probe multiplexer HP 54002A 50 W input pod for HP 54300A HP-IB Cables HP 10833A 1 m cable HP 10833B 2 m cable HP 10833C 4 m cable HP 10833D 0.5 m cable Centronics Cables HP 13242G 25-pin (m) to 25-pin (m) Centronics cable (5 m) HP 92284A 25-pin (m) to 36-pin (m) Centronics cable (2 m) HP 92219Z 25-pin (m) to 15-pin (m) Centronics cable (1 m) Rack Mounting Hardware Support rail kit for all HP racks (HP 12679B) Standard slide kit, nontilt (HP P/N 1494-0059) Standard slide kit, tilting (HP P/N 1494-0063) Slide end brackets for non-HP racks (HP P/N 1494-0061) New slide cover required for slides (1 each) (HP P/N 5060-9948) Testmobile HP 1181A system testmobile HP 35181A top-mounted printer stand for HP 1181A HP 35181C 3.5-inch drawer for HP 1181A HP 35181D Work Surface
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Page Updated: Wednesday January 14 23:52:27 UTC 1998