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Tektronix

AM 503 Current Probe Amplifier

Test & ProbeProduced 1976–Tektronix AM 503 Current Probe Amplifier family
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This page was generated automatically from cited public sources and hasn't completed the full research pass yet. Every specification shown carries its source; more detail is added as research completes.

The Tektronix AM 503 Current Probe Amplifier is a current probe amplifier. The Tektronix AM 503 Current Probe Amplifier operates in Tektronix TM 500-Series power modules only. The Tektronix AM 503 Current Probe Amplifier has selectable bandwidth settings of FULL or 5 MHz.[1][2]

AM 503 Current Probe Amplifier — Inventory photo
Fig. 01AM 503 Current Probe AmplifierInventory photo[3]

Produced

1976–

Power

120 vac[3]

What it is

The Tektronix AM 503 is a current probe amplifier.[3][4][5][2][1][6][7]

The AM 503 is a Tektronix plug-in instrument intended for use with compatible current probes.[2][1][6][3][4]

How it works

The AM 503 provides selectable input coupling and selectable bandwidth.[2][1][6]

The AM 503 uses a calibrated attenuator with a one, two, five sequence and knob-skirt illumination that indicates current per division.[2][1][6]

Applications

The AM 503 is used for current measurement with compatible current probes in electronic test setups.[2][1][6][3][4]

The AM 503 supports ac and dc input coupling, which allows measurement of low amplitude ac signals on a high level dc current.[2][1][6]

What do the numbers mean?

Power & electrical2

Voltage
120 vac[3]
Accurate?
Bandwidth settings
FULL or 5 MHz[1]
Accurate?

Configuration & options6

OEM
Tektronix[3]
Accurate?
Model
AM 503[3]
Accurate?
Product type
Current Probe Amplifier[3]
Accurate?
Compatible platform
Tektronix TM 500-Series power modules[1]
Accurate?
Input coupling modes
AC, DC, CAL DC LEVEL[1]
Accurate?
First printing
September 1976[2]
Accurate?

Observed configurations

How individual machines were equipped when they appeared on the secondary market — as listed, per unit. These describe one specific machine, not the model in general.

Unit as listed[3]

  • Power module operates at 120 VAC

Vintage & configurations

  1. 1976Production start[2]

    First printing is September 1976.

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What does it need to run?

Site utility requirements, footprint, and infrastructure needed to install and operate this tool. Sourced from public records.

  • Voltage120 vac[3]
  • Bandwidth settingsFULL or 5 MHz[1]

Where are the manuals?

Generated from public-source data on file. Enter your email to access — nothing is published; details are routed privately.

Not publicly documented

Field notes

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Frequently asked questions

What is the AM 503 designed to work with?

The AM 503 is designed for use with compatible current probes.[2][1][6][3][4]

What bandwidth settings does the AM 503 provide?

The AM 503 provides FULL bandwidth, which is limited by the current probe in use, and a 5 MHz setting.[2][1][6]

How does the AM 503 indicate current per division?

The AM 503 uses attenuator knob-skirt illumination to provide direct indication of current per division.[2][1][6]

Does the AM 503 support both ac and dc coupling?

The AM 503 supports selectable ac and dc input coupling.[2][1][6]

What power modules does the AM 503 use?

The AM 503 operates in Tektronix TM 500-series power modules only.[2][1][6]

Not publicly documented

The following facts about the AM 503 Current Probe Amplifier are absent from this record as of this revision. First-hand knowledge or a citation closes a gap; every submission is reviewed before publication.

  • No publicly documented variants, configuration options, or revision breakpoints of the AM 503 Current Probe Amplifier are on record.

    Answerable by: an OEM product catalog or an engineer who ordered or specified the tool

  • The control-system platform and OS era of the AM 503 Current Probe Amplifier are not on record.

    Answerable by: an engineer who operated it or OEM installation records

  • No publicly documented failure modes or field errata for the AM 503 Current Probe Amplifier are on record.

    Answerable by: a field service engineer, process engineer, or maintenance technician

  • The process node or technology generation of the AM 503 Current Probe Amplifier is not on record.

    Answerable by: an OEM datasheet or a fab qualification report

  • No publicly documented compatible parts, consumables, or accessories for the AM 503 Current Probe Amplifier are on record.

    Answerable by: an OEM parts catalog or a service engineer

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Sources & citations

Sources (7)Every fact above is drawn from these public sources
  1. [1]ia801008.us.archive.org — ia801008.us.archive.orgia801008.us.archive.org
  2. [2]w140.com — w140.comw140.com
  3. [3]Inventory photo
  4. [4]Inventory photo
  5. [5]TEKTRONIX AM 503 INSTRUCTION MANUAL Pdf Download | ManualsLib — manualslib.commanualslib.com
  6. [6]https://archive.org/download/am503currentprob00unse/am503currentprob00unse.pdf — archive.orgarchive.org
  7. [7]Tektronix AM 503 Manuals and Documents | MetrologyManuals — metrologymanuals.commetrologymanuals.com
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Last updated Oct 4, 2026.

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