7A14: Difference between revisions

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The '''Tektronix 7A14''' is a 120 MHz current probe amplifier [[7000-series scopes|7000 series]]
The '''Tektronix 7A14''' is a 120 MHz [[7000-series scopes|7000 series]] current probe amplifier
vertical plug-in intended for use with current probes such as the [[P6021]] and [[P6022]].
vertical plug-in intended for use with current probes such as the [[P6021]] and [[P6022]].
The 7A14 is one of the original plug-in modules introduced at the start of the 7000 series in 1969.
The 7A14 is one of the original plug-in modules introduced at the start of the 7000 series in 1969.

Revision as of 13:34, 4 February 2018

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The Tektronix 7A14 is a 120 MHz 7000 series current probe amplifier vertical plug-in intended for use with current probes such as the P6021 and P6022. The 7A14 is one of the original plug-in modules introduced at the start of the 7000 series in 1969.

In the 7A14, the ring around the input BNC connector that is used to identify ×10/×100 probes on voltage probes serves the purpose of detecting the difference between the P6021 and P6022 probes, and switching in appropriate gain and frequency compensation. The P6021 shorts this ring to ground, directly switching three relays connected to -15 V internally.

The front panel gain control screwdriver adjustment affects gain for either P6021 or P6022.

Specifications

  • Bandwidth with P6021 Probe: 25 Hz – 50 MHz (55 MHz in 79xx)
  • Bandwidth with P6022 Probe: 250 Hz – 105 MHz (120 MHz in 79xx, 80 MHz in 76xx)
  • Ranges: 1 mA/Div to 1 A/Div in 1–2–5 sequence

Links

Internals

The 7A14 uses twelve Tek-made miniature relays that can be a service issue.

The amplifier is an 8-stage discrete differential design. The plug-in contains no integrated circuits.

Prices

Year 1970 1974
Catalog price $575 $700
2017 value $3,630 $3,480

Pictures