Product category:
Electrical and Electronic Testing
News Release from: TTi (Thurlby Thandar Instruments) | Subject: LISN1600
Edited by the Manufacturingtalk Editorial
Team on 09 October 2003
EMC Network Allows Compliance Quality
Measurements
The LISN1600 provides compliance level measurements of conducted EMC emissions at the supply input of any piece of electrical or electronic equipment operating from a single phase AC supply.
The LISN1600 from TTi (Thurlby Thandar Instruments) is a line impedance stabilisation network capable of providing compliance level measurements of conducted EMC emissions at the supply input of any piece of electrical or electronic equipment operating from a single phase AC supply The instrument is designed for use in conjunction with a spectrum analyser or a measurement receiver
This article was originally published on Manufacturingtalk on 2 Jul 2008 at 8.00am (UK)
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The unit allows measurements of conducted interference, as required by CE marking regulations, to be made in-house without recourse to test-house facilities.
It has a continuous current rating of 16 A, making it suitable for virtually all types of single-phase equipment.
The LISN1600 can be purchased with a variety of output connectors including IEC 16 A, UK 13 A and other European standard connector sockets.
The instrument fully meets the requirements of CISPR 16 for measurements in both band A (10 kHz to 150 kHz) and band B (150 kHz to 30 MHz).
A switchable 150 kHz filter is incorporated to limit low-frequency signals (particularly AC line frequency) when measuring in band B.
This reduces the dynamic range requirements of the measuring device.
The LISN1600 incorporates a voltage limiter to protect the vulnerable input of the measuring device against damage from power switching or interference transients.
To avoid the risk of introducing nonlinearity errors, the limiter diodes are held in reverse bias by a built-in lithium battery.
The limiter has a 10 dB pre-attenuator and a switchable 10 dB post-attenuator.
If required, the whole limiter/attenuator network can be switched out.
The measurement circuit can be connected to either supply line or disconnected altogether for checking the noise floor.
Source selection can be remotely controlled by built-in relays where automated measurement sequences are required.
For testing hand-held apparatus which does not have an earth connection, an artificial hand connection is provided.
This conforms to the definitions in EN55014.
The LISN1600 is housed in a robust case suitable for bench or rack use measuring 132 x 212 x 315 mm (3U half rack).
It costs 950 GBP (plus VAT) in the UK.
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