Re: Trying to understand the 453 calibrator

Colin Herbert

There is a bit of a clue in that the calibration loop on the right-hand side is marked with an arrow pointing left and the words "5mA" followed by a square-wave. The calibration BNC on the front panel is marked "1 kHz". This should lead one to think that the BNC on the front-panel is for Time/Div calibration and the loop on the right side is for Current/Div calibration. I will have to look at how the "1kHz" is generated to see if it really is accurate (most of these are not that accurate).

-----Original Message-----
From: [] On Behalf Of Richard P via
Sent: 03 August 2020 19:02
Subject: Re: [TekScopes] Trying to understand the 453 calibrator

Harvey (and all),

Yeah, my loop is directly grounded, so I will get my calibration voltage signal from the BNC on the front panel. Works fine.

Glad to learn aboutthis. Thanks, all.


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