Test Equipment Specifications
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Tunable Filters
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Stanford Research Systems
Model
Number of Channels
Low end frequency limit
High end frequency limit
Operation Modes
Attenuation Slope
Filter Type
SR650
2
1000 mHz
100 kHz
LP,HP
115 dB/octave
8-pole, 6-zero elliptic
SR640
2
1000 mHz
100 kHz
LP
115 dB/octave
8-pole, 6-zero elliptic
SR645
2
1000 mHz
100 kHz
HP
115 dB/octave
8-pole, 6-zero elliptic
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Indian Matrimonials
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