CIMODQ4

4x LTE modem bank with VoLTE support.

Theory of operation

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Four Quectel Mini PCIe EVB boards provide 4x Quectel EC25 Mini PCIe modems connected via a USB hub to a front-panel USB port.

Bill of materials

CIMODS8 BOM

Component

Description

Manufacturer

Man. Part

Distributor

Dist. Part

Enclosure

1U 19” rackmount enclosure

nVent Schroff

20860-122

Farnell

1455925

S1-16

M3x20 F-F threaded standoff

Wurth

970200321

RS

205-3043

S17-24

M3x10 F-F threaded standoff

Wurth

970100321

RS

176-8403

F1

5Vdc 30x30mm fan

Sunon

MF30150V1-1000U-A99

RS

202-5395

D1

Panel mount LED indicator, green

RS Pro

205-331

RS Components

205-331

TB1

Distribution block with 6 terminals, red

Phoenix Contact

3002765

RS Components

207-2850

TB2

Distribution block with 6 terminals, blue

Phoenix Contact

3002761

RS Components

207-2847

J1

2.5x5.5mm barrel plug

RS Pro

487-854

RS Components

487-854

J2

16-way socket

Binder

09-0340-00-16

RS

734-5969

J3

Male panel mount XLR connector

Neutrik

NC3MD-LX-M3

Mouser

568-NC3MD-LX-M3

J4

Panel-mount USB feed through

RS Pro

124-6393

RS

124-6393

J5-9

Internal audio connector for modem modules

Multicomp Pro

MP-435LN

Farnell

MP-435LN

CBL1-4

USB A to R/A Micro B 0.5m

RS Pro

236-9078

RS

236-9078

CBL5

USB A to B 0.5m

RS Pro

182-8547

RS

182-8547

CBL6-13

Female SMA to U.FL 300mm

RS Pro

794-2831

RS

794-2831

M1-4

Full size SIM to FPC adapter

Sysmocom

fullsize-sim-fpc

Sysmocom

fullsize-sim-fpc

Misc.

30mm fan guard

Qualtek

08346

Mouser

562-08346

Misc.

Four port USB hub

Infineon

CY4608

Misc.

0.5mm2 tri-rated wire in red and black

Misc.

0.5mm2 ferrules