AP | SWR-2755 音頻測(cè)試開(kāi)關(guān)|AudioPrecision|音頻開(kāi)關(guān)
廠商名稱： AP |AudioPrecision


Audio Precision offers three models of the SWR-2755 audio switchers, which expand the 2-channel input and output capabilities of Audio Precision 2700 series and ATS-2 audio analyzers, as well as older System One and System Two instruments.

SWR-2755 switchers replace the current SWR-2122 switchers, which have been discontinued. The new switchers are entirely compatible with our current products and offer better performance at a lower price.
Built with the same feature set and solid integrity of the SWR-2122, the new SWR-2722 series bring significantly lower crosstalk (18 dB better in an unbalanced 600 Ω load; 10 dB better in a balanced 600 Ω load), a new universal power supply that automatically adjusts to all line voltages, a convenient rear-panel ground lug and full EMC and safety regulatory compliance. Manufacturing economies enable us to offer the new switchers at a significantly lower price.


Key features

* Input and output configurations enable switching of generator outputs or analyzer inputs, or both. 
* Balanced and unbalanced configurations are available. 
* Multiple switchers can be connected to an Audio Precision analyzer, expanding the system capability to as many as 192 inputs and outputs. 
* Low inter-channel crosstalk, less than –150 dB at 20 kHz in the balanced configurations. 
* All switchers are one rack unit (RU) high (1.75"). switchers can be used on the bench or rack mounted with an optional rack mount adapter kit.

Specs 

Electrical Characteristics 

* Max Voltage Rating 200 Vpk, 160 Vrms 
* Max Signal Power 5 W or 200 mA

* Crosstalk 
Balanced 600 ohm load 
–150 dB @ 20 kHz
–136 dB @ 100 kHz 
Unbalanced 600 ohm load
–138 dB @ 20 kHz
–124 dB @ 100 kHz

* Series resistance typically <0.3 ohm per side 
* Shunt capacitance typically <90 pF, from signal path to chassis (100 nF from BNC shell to chassis on U versions). 
* Reverse termination 604 ohm, 250 mW maximum 




General Characteristics

* Power Requirements 90–250 Vac, 50-60 Hz, via external dc supply module

* Temperature Range 
Operating 0°C to +50°C 
Storage –40°C to +75°C

* Humidity 80% RH to +40°C, (non-condensing) 
* Dimensions 16.5 x 1.75 x 10.5 inches [41.9 x 4.4 x 26.7 cm] 
* Weight Approximately 9.9 Ibs [4.5 kg]

Regulatory Compliance 
* EMC complies with FCC Part 15 Subpart J (class B), 89/336/EEC, 92/31/EEC, and 93/68/EEC, EN 50081-1 (1992) Emissions Class B, EN-50082-1 (1992) Immunity. 
* Safety complies with 73/23/EEC, 93/68/EEC, EN6010-1 (1903)— IEC 1010-1 (1990) + Amendment 1 (1992) + Amendment 2 (1995).
Installation category II—Pollution Degree 2. 
* External Power Supply AP part number 4540.0020 complies with IEC 60950:1991+A1+A2+A3+A4, UL 950 Third Edition E183744, CSA C22.2 No. 950.
* External Power Supply AP part number 4540.0051 complies with IEC 60950:1991, UL60950 Third Edition E199447, CSA C22.2 No. 60950, PSE J60950:1998, NOM-001-SCFI-1993.