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HP 1145A Two-Channel, 750-MHz, Small-Geometry Active Probe for Surface-Mount Devices![]()
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The electrical performance of the HP 1145A is unmatched by any off-the-shelf probe designed for SMD probing. The probe combines high bandwidth, high input resistance, and low input capacitance. This combination is superior to that of passive divider probes that have higher input capacitance because it provides minimal circuit loading at high and low frequencies. As signal speeds increase, passive divider probes don't deliver the performanceneeded. This lower performance can result in waveshapes that do not represent the actual signal. The HP 1145A used with an HP 54542 scope, for example, introduces the equivalent of only 1/2 of a typical CMOS gate load (approximately 3.0 pF per gate) to a CMOS circuit. Other SMD probes used with comparable scopes can introduce 1-1/2 or more gate loads to the circuit under test.
A versatile set of accessories lets you probe many SMD packages. SMT grabbers provide solid connection to leads with .050" spacings, ground extenders allow for hands free probing of signal-ground pairs with 100-mil spacing. Flexible SMT leads can be soldered to any convenient signal access point. For probing fine pitch SMT down to .5mm (.020") spacing, the HP 10075A .5mm Micrograbber Accessory Kit is available.
The HP 1145A is powered directly by the HP 54520 and HP 54540 Family Oscilloscopes, and the HP 54615B, HP 54616B and the HP 54616C oscilloscopes. For all otherscopes the HP 1142 A Power Supply is needed.
Bandwidth:1 Greater than or equal to 750MHz RiseTime:1,2 Less than of equal to 470 ps Attenuation3: 10:1 +/-3% Input Resistance: 1M ohm +/-2% Maximum Input Voltage: +/-40V (dc + peak ac) 1Above 35°C, bandwidth and rise time degrade approximately 1/2%/°C.2Rise time figure calculated from tr=0.35/Bandwidth.
3When connected to an instrument input of 50 Ohm, +/-0.5%.
Characteristics
Input Capacitance: 2.0-pF (typical) Overshoot and Ringing:1 +/-10% for the first 6 ns +/-4% from 6 ns to20ms +/-1.5% thereafter Output Voltage Offset: Less than +/-10V Input Dynamic Range: +/-6.0V Output Load Requirement: 50 ohm Power Requirements: +/-6V dc +/-2% (at approximately 180 mA each supply) Weight: Net: approximately 8 oz Shipping: approximately 1 kg (2.2 lbs) 1Oscilloscope Characteristics Excluded.
Environmental Characteristics
Temperature: Operating: 0°C to +55°C (32°F to +131°F) Non-Operating: -40°C to +70°C (-40°F to +158°F) Humidity: Operating: up to 95% relative humidity (non-condensing) at +40°C (+104°F) Non-Operating:up to 90% relative humidity at +65°C (+149°F) Altitude: Operating: up to 4,600 meters (15,000 ft) Non-Operating: up to 15,300 meters (50,000 ft) Vibration: Random vibration 5 to 500 Hz 10 minutes per axis, 0.3 grms Random vibration 5 to 500 Hz 10 min per axis, 2.41 grms Resonant search 5 to 500 Hz swept sine, 1 octave/min sweep rate, (0.75g), 5 min resonant dwell at 4 resonances per axis
HP 1145A Two-Channel, 750-MHz, Small-Geometry Active Probe for Surface-Mount DevicesAll orders include the following:
HP 1142A Probe Control and Power Module
HP 10075A 0.5 mm MicroGrabber Accessory Kit
HP 10467-68701 1 Package of 4; MicroGrabbers
Included with the HP 1145A are:
4 probing pins 5 SMT grabbers 2 ground extenders 2 ground leads with pin-sockets 2 red solderable SMT leads 2 black solderable SMT leads 1 user and Service Guide 1 One-year Warranty
Available accessories for this product include:
No literature is available online at this time.
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Page Updated: Monday October 05 18:59:58 UTC 1998