Low Voltage SPM Detector
7
MX631
Cha ra c te ristic s Note s
1.
2.
3.
4.
5.
6.
With adherence to Signal-to-Voice and Signal-to Noise specifications.
With Input Amp gain setting: 15.5dBMIN/19.5dBMAX
Common Mode SPM and balanced voice signal.
Immune to false responses.
.
Immune to false de-responses
With SPM and voice signal amplitudes balanced; To avoid false de-responses due to saturation, the
peak-to-peak voice+noise level at the output of the Input Amp (12/16kHz Filter Input) should be no
greater than the dynamic range of the device.
7.
8.
Maximum voice frequencies = 3.4kHz
Response, De-Response and Power-up Response Timing.
Ap p lic a tion Inform a tion ......
12.00kHz
16.00kHz
15.76kHz
11.82kHz
12.18kHz
16.24kHz
11.52kHz
12.48kHz
15.36kHz
16.64kHz
F0 - 4%
F0 - 1.5%
F0 F0 + 1.5%
F0 + 4%
F0 - 4%
F0 - 1.5%
F0 F0 + 1.5%
F0 + 4%
Figure 5 - Will/Will-Not Decode Frequencies
Syste m Tim ing
SIGNAL INPUT
TONE
NOTONE
TONE FOLLOWER OUTPUT
RESPONSE
DELAY
PACKET MODE OUTPUT
SIGNAL INPUT ......
TONE FOLLOWER OUTPUT ......
PACKET MODE OUTPUT ......
DERESPONSE
DELAY
Figure 6 - Examples of Input and Output Relationships
© 1997 MX•COM, INC.
www.mxcom.com Tele: 800 638 5577 910 744 5050 Fax: 910 744 5054
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