Tektronix DM502A 3-1/2 digit DMM

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Tektronix Catalog CostLow BidHigh Bidaverage
$550 (1982)
$690 (1985)
1017366
$75.00 8/2/01 #1621068578 mikeb61
$67.66 8/9/01 #1623429038 deltafi
$66.50 8/9/01 #1623411333 djay99
$55.45 8/24/01 #1628569264 bbg
$54.00 9/11/01 #1635818258 jbarkley
$51.00 9/11/01 #1635183551 djay99
$99.00 9/20/01 #1638376017 jshank
$56.03 10/4/01 #1643593266 sb812
$50.00 10/31/01 #1656217207 teoutlet
$85.00 11/1/01 #1656141856 cable7
$104.50 11/8/01 #1657850748 abeja
no bids (asked $50) 11/15/01 #1663038516 teoutlet
$100.00 3/3/02 #1709172089 cable7
$44.04 12/7/02 #1922374704 duffer.jim
$43.00 1/18/03 #2300444949 old-radio (tested) (4 bids $10 start)
$61.00 1/25/03 #3108901623 old-radio (tested) (12 bids $10 start)
$91.00 3/25/03 #2517114604 sunnking (untested) (14 bids $10 start)
$21.71 9/12/04 #3838032844 testgearnation (3 bids $20 start) (tested)
$78.78 12/9/05 #7569542006 corbymite (9 bids $23 start) (tested)
$46.00 12/13/05 #7570291829 fdk95 (3 bids $25 start) (untested)
$49.00 12/14/05 #7570251612 precisionlh (5 bids $9.99 start) (powers up)
$68.00 12/29/05 # 7574905230 longbeard4m1m (10 bids $0.99 start) (was working)
$38.00 1/26/06 #7583364467 no..reserve (7 bids $9.99 start) (untested)
$27.66 2/14/06 #7587901743 marinavainer (4 bids $20 start) (untested)
$56.00 3/12/06 #7597191567 k5afc (3 bids $20 start) (working-pic shown)
$64.00 3/13/06 #7597612161 solanotraders (6 bids $10 start) (powers up)
$78.77 4/10/06 #7606848280 jtsele (14 bids $9.99 start) (working-guaranteed)
*$37.00 4/20/06 #7609904353 zdadsales (6 bids $25 start - $12 ship) (powers up-otherwise untested))
$55.00 (+$11 ship) 7/20/07 #270144975410 aqua_bonita (7 bids $0.99 start) (working w/ temp probe)

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    Use the P6601 Temperature Probe with this unit

    Tektronix DM 502A 3 1/2 digit DMM. This multimeter measures six functions with push button convenience. Autoranging, in all modes except current, makes it exceptionally easy to use without having to select ranges. The instrument measures dc and ac voltage, dc and ac current, dB, and resistance. It provides true RMS measurements in all AC modes, which provides more accuracy with distorted, noisy or other non-sinusoidal ac waveforms. The resistance mode also offers Hi-Lo voltage (2v to 0.2v) modes. This user-selectable feature allows in-circuit ohms measurements without turning on diode or transistor junctions. The high-voltage mode allows you to test semiconductor junctions for forward and reverse resistances. The unit offers a 0.1% dc accuracy and overall accuracy is better than that on this unit.
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    The DMM 502A Digital Multimeter measured dc and ac voltage and current, dBm, dBV, resistance, and temperature. The ac functions are true RMS responding. The ranges for dc voltage, ac voltage, dBm, dBV, and resistance are automatically or manually selected as desired. The current and temperature ranges are manually selected.

    The readout is a 3 ˝ digit display using seven segment LED. The decimal point is automatically positioned depending on the operating range of the instrument. Polarity is indication is automatic.

    Electrical Characteristics:
  • DC Voltmeter - Ranges 200mV, 2V, 20V, 200V, and 1000V
  • AC Voltmeter (TRUE RMS) Ranges 200mV, 2V, 20V, 200V, 500V
  • Decibels (dB) - TRUE RMS - Ranges -10dB, +10dB, +30dB, and +50dB
  • Resistance Ranges 200W, 2kW, 20kW, 200kW, 2000kW, and 20MW
  • DC Ammeter Ranges 200ľA, 2mA, 20mA, 200mA, and 2000mA
  • AC Ammeter (TRUE RMS) Ranges 200ľA, 2mA, 20mA, 200mA, and 2000mA
  • Temperature -55deg C to 200deg C .