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{{Plugin Sidebar 2|
{{Plugin Sidebar
title=Tektronix 7A14|
|manufacturer=Tektronix
summary=120 MHz current probe amplifier|
|series=7000-series scopes
image=Tek 7a14.jpg |  
|type=7A14
caption=7A14 |
|summary=120 MHz current probe amplifier
introduced=1969 |
|image=Tek 7a14 de.jpg
discontinued=1975 |
|caption=7A14
series=[[7000-series scopes]]|
|introduced=1969
manuals=
|discontinued=1975
* [http://bama.edebris.com/download/tek/7a14/tek-7a14.pdf Tektronix 7A14 Manual (PDF)]
|designers=Hans Springer;
|manuals=
* [[Media:070-0979-00.pdf|Tektronix 7A14 Manual]]
}}
}}
The '''Tektronix 7A14''' is a 120 MHz current probe amplifier vertical plug-in for [[7000-series scopes|7000 series]], intended to be used with passive current probes such as the [[P6021]] and [[P6022]].


The '''Tektronix 7A14''' is a 120 MHz current probe amplifier vertical plug-in for [[7000-series scopes]]. 
The [[P6019]] and [[P6020]] also work but with reduced bandwidth flatness, and the P6019 needs an adapter (s.b.)
It is intended for current probes [[P6021]] and [[P6022]].


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 7A14 is one of the original plug-in modules [[introduced in 1969|introduced at the start of the 7000 series in 1969]].


The front panel gain control screwdriver adjustment affects gain for either P6021 or P6022. 
{{BeginSpecs}}
==Specifications==
{{Spec | Deflection | 1 mA/Div to 1 A/Div in 1–2–5 sequence }}
{{Spec | Bandwidth | P6021: 25 Hz – 50 MHz (55 MHz in [[7904|79xx]])<br />P6022: 250 Hz – 105 MHz (120 MHz in [[7904|79xx]], 80 MHz in [[7603|76xx]])}}
{{EndSpecs}}


* Bandwidth: 25 Hz – 50 MHz ([[P6021]] Probe)
==Operation==
* Bandwidth: 250 Hz – 105 MHz ([[P6022]] Probe)
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.
* Ranges: 1 mA/Div to 1 A/Div in 1–2–5 sequence
The P6021 shorts this ring to ground, directly switching three relays connected to −15 V internally. When connecting a [[P6019]] probe, the ring must also be grounded but the probe connector does not have the matching pin.  The [[131-0750-00]] adapter solves this problem.
 
The front panel gain control screwdriver adjustment affects gain for either P6021 or P6022, i.e. swapping probes requires re-adjustment.


==Links==
==Links==
Line 31: Line 37:
The 7A14 uses twelve Tek-made [[miniature relays]] that can be a service issue.
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.
The amplifier is an 8-stage discrete differential design.
The plug-in contains no integrated circuits.
 
==Prices==
{| class="wikitable"
|-
! Year
! 1969
! 1974
|-
! Catalog price
|width="4em" "align="right" |  $575
|width="4em" align="right"  |  $700
|-
! In 2022 Dollars
|align="right" | $4,600
|align="right" | $4,200
|-
|}


==Pictures==
==Pictures==


<gallery>
<gallery>
Tek 7a14 1.jpg
Tek 7a14 12.jpg
Tek 7a14 3.jpg
7a14 front.jpg  | 7A14 front panel
7a14 front.jpg  | 7A14 front panel
7a14 left.jpg  | 7A14, left side
7a14 left.jpg  | 7A14, left side
Retrieved from "https://w140.com/tekwiki/wiki/Special:MobileDiff/30356...79898"

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