Product category:
Test Accessories
News Release from: TTi (Thurlby Thandar Instruments) | Subject: Audio Precision SWR-2755 family
Edited by the Electronicstalk Editorial
Team on 12 January 2006
Switchers add more channels to audio
analysers
The Audio Precision SWR-2755 family of programmable switchers are now available in the UK from TTi (Thurlby Thandar Instruments), the exclusive distributor.
The Audio Precision SWR-2755 family of programmable switchers are now available in the UK from TTi (Thurlby Thandar Instruments), the exclusive distributor These units are compatible with most of Audio Precision's audio analysers including the 2700 Series, ATS-2, System One, System Two, System Two Cascade and Cascade Plus instruments
This article was originally published on Electronicstalk on 12 May 2000 at 8.00am (UK)
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When used without a switcher, these instruments can provide two analogue outputs and two analogue inputs.
Using a programmable switcher such as the SWR-2755 expands the two-channel input and output to interface to multichannel devices or production "bed of nails" test fixtures.
SWR-2755 switchers use highly reliable electromechanical relays to preserve the signal integrity of the generator and signals from the device under test (DUT) for transparent operation.
Unlike conventional industrial audio signal routing switchers, the SWR-2755 achieves exceptional crosstalk performance of less than -150dB at 20kHz in balanced operation.
The switchers are controlled by the proprietary APIB interface, and the switcher operation is integrated into Audio Precision's AP2700, ATS, APWIN and S1.exe control software.
"Channel in use" LEDs next to each connector indicate crosspoint activity.
The SW-2755 comes in three configurations.
The SWR-2755M has a front panel fitted with 12 XLR male connectors and two XLR female connectors and is typically used as an output switcher.
The SWR-2755F has a front panel with 12 XLR female connectors and two XLR male connectors, and is typically used as an input switcher.
The SWR-2755U is fitted with 14 BNC connectors.
The U or unbalanced switchers can appear to the control software as either an input or output switcher according to the position of a rear-panel switch.
The core of each switcher is a balanced 12 x 12 crosspoint matrix.
Either of the two common points can be connected under software control to any of the 12 selectable points.
Up to 16 switchers of any configuration can be used in a system, enabling testing of DUTs with a total of up to 192 inputs and/or outputs (up to 96 stereo pairs).
Additional switchers are daisychained on the APIB bus.
SWR-2755 switchers cost GBP 1015 (plus VAT) each.
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