[time-nuts] Re: Noise down-converter project

[Adrian Godwin]

It looks identical to my Agilent U1732B, thjough I think the Agilent's spec
is poorer. It was replaced by a U1732C which may be closer thjough both are
going back a way now. Presumably Agilent badged it and it has continued to
improve. I don't know whether there's a corresponding Keysight version.

On Mon, Jun 27, 2022 at 11:55 PM Mike Monett via time-nuts <
time-nuts at lists.febo.com> wrote:

> The Tonghui has arrived. It is ideal for measuring small RF components. It
> has a resolution of 100 microohms, 1 nanohenry and 0.001 picofarad.
>
> There is no need to buy Kelvin clips. It comes with a complete set,
> including SMD and ordinary multimeter clips.
>
> TH2822 series are equipped with the following
> contents:
> •  TH2822/TH2822A/TH2822C handheld LCR meter
> •  Instruction manual (in Chinese)
> •  Mini USB Interface Cable
> •  Short-circuit plate
> •  *9V Alkaline battery or 8.4 rechargeable battery
> •  *AC adapter (240V, 4mm)
> •  *TH26027A Kelvin clip test leads
> •  *TH26009C SMD test tweezers
> •  Red / Black Banana plugs—Crocodile clip Test Leads
>
> It also has a USB interface for data transfer. This requires a special
> driver available from www.tonghui.com.cn.
>
> The only problem is the charger is 240V to 12V with a 4mm connector. This
> is a problem for North America customers, but the needed chargers appear to
> be available at Amazon. For example, see
>
>
> https://www.amazon.ca/SHNITPWR-Universal-Switching-Adjustable-Transformer/dp/B08N46GMM8/
>
> The manual is available all over the place, for example at
>
> http://file.yzimgs.com/327099/2011101217170714.pdf
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