CMX661 查看數據表（PDF） - MX-COM Inc

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CMX661

Pair Gain Dual SPM Detector

MX-COM Inc  

Pair Gain Dual SPM Detector

Page 7 of 14

CMX661 Advance Information

4.2.1 Will Detect and Will Not Detect Bandwidths

There are four selectable bandwidths which are common to both channels. The ‘will detect’ bandwidth can be

programmed to ±1.5%, ±3%, ±5% or ±7.5%. The corresponding ‘will not detect’ band edges are ±4%, ±5.5%,

±7.5% and ±10%. Pins D0 and D1 program the bandwidth selection, shared by both channels, as shown in

Tables 4 and 5.

D0-D1

(both channels)

00

01

10

Lower

Will Not Detect

11.52kHz (-4.0%)

11.34kHz (-5.5%)

11.10kHz (-7.5%)

Lower

Will Detect

11.82kHz (-1.5%)

11.64kHz (-3.0%)

11.40kHz (-5.0%)

Upper

Will Detect

12.18kHz (+1.5%)

12.36kHz (+3.0%)

12.60kHz (+5.0%)

Upper

Will Not Detect

12.48kHz (+4.0%)

12.66kHz (+5.5%)

12.90kHz (+7.5%)

11

10.80kHz (-10.0%) 11.10kHz (-7.5%) 12.90kHz (+7.5%) 13.20kHz (+10.0%)

Table 3: Setting 12kHz Will Detect/Will Not Detect Bandwidths

D0-D1

(both channels)

00

01

10

11

Lower

Will Not Detect

Lower

Will Detect

Upper

Will Detect

Upper

Will Not Detect

15.36kHz (-4.0%) 15.76kHz (-1.5%) 16.24kHz (+1.5%) 16.64kHz (+4.0%)

15.12kHz (-5.5%) 15.52kHz (-3.0%) 16.48kHz (+3.0%) 16.88kHz (+5.5%)

14.80kHz (-7.5%) 15.20kHz (-5.0%) 16.80kHz (+5.0%) 17.20kHz (+7.5%)

14.40kHz (-10.0%) 14.80kHz (-7.5%) 17.20kHz (+7.5%) 17.60kHz (+10.0%)

Table 4: Setting 16kHz Will Detect/Will Not Detect Bandwidths

The CMX661 will always respond to valid inputs between the Lower ‘Will Detect’ and Upper ‘Will Detect’

frequencies inclusive. It will not respond to frequencies at or below the Lower ‘Will Not Detect’ or at or above

the Upper ‘Will Not Detect’.

4.2.2 System Select

The System Select pin selects the operating frequencies of the CMX661 (logic '1' = 12kHz, logic '0' = 16kHz).

©2001 MX-COM, INC.

www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054

Doc. # 20480228.001

4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies.

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