User manual

Appendix B – Product Approvals, Regulatory Design Considerations, Compliance

Multi-Tech Systems, Inc. MT2456SMI-22 SocketModem Developer’s Guide 51

SocketModem Placement

This figure illustrates where to place the SocketModem on a typical application. It must be placed so that the

analog end is near the phone jack.

Analog to Digital Barrier

(Shown for Reference Only)

D (Power and GND)

D (Analog)

B or C

Note: The locking end of C should

go in the Motherboard.

E (Digital)

Note: The modem should be placed with the

analog pins as close as possbile to the line jack.

0.035 [0.889] Drill with 0.060 [1.524] Pad

0.125 [3.175] Non-Plated

1.732

[44]

.750

[19.05]

.0787 TYP

[2]

.945

[24.003]

.145

[3.683]

Figure B–3. SocketModem Placement

Note: The dimensions in this diagram are examples only.

See the mechanical drawing in Chapter 2 for true dimensions.

Key

Qty Ref Name Description

1 A Reference Generic Motherboard

1 B (or C) Recommended RICHCO DLMSPM-4-01 Support Post (L=.250”)

1 C (or B) Recommended RICHCO MSPM-4-01 Support Post (L=.250”)

2 D Recommended Singatron Enterprises 1211-04-S-01-B)

2 E Recommended Singatron Enterprises 1211-10-S-01-B)

1 F Reference ModemModule Assembly

1 G Reference Line Jack

Note: The analog to digital barrier is really a safety isolation barrier between TNV and SELV.