LTE Modem and USB Add-on v1 Datasheet

Table of contents

  1. Board Connections and I/O
  2. Specifications
    1. Physical Specification
    2. Radio Specification
      1. VOXL-ACC-LTEH-NA
      2. VOXL-ACC-LTEH-DOD / World
    3. SIM Cards and Supported Networks
  3. LEDs
    1. Status LEDs
    2. USB LEDs
  4. Connector Pinouts
    1. J11 - Serial Debug Port
    2. J16 - USB Port 1
    3. J17 - USB Port 2
  5. RF Characteristics
  6. Environmental
    1. Operating Temperature
  7. Emergency Boot Switch

Board Connections and I/O

voxl-acc-lteh-na-144.png

Specifications

Physical Specification

Specicifcation Value
Weight 12g
Dimensions 37.1 x 43.18mm
Downstream USB ports 2
Cellular 3GPP Bands Supported LTE 2, 4, 5, 12 WCDMA 2, 5
WWAN Antenna Connectors (MIMO) UFL-R-SMT-110
Recommend Antennas W3907B0100
Debug Console Connector SM04B-SRSS-TBLFSN
Debug Console Mating Connector SHR-04V-S-B
USB2 Host Connectors 4 Position JST GH, Vertical, BM04B-GHS-TBT
USB2 Host Mating Connector JST GHR-04V-S
J7 Connector (bottom of board) Samtec Inc, MPN: QTH-030-01-F-D-K
J7 Mating Connector Samtec Inc., MPN: QSH-030-01-L-D-A-K

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Radio Specification

VOXL-ACC-LTEH-NA

Specicifcation Value
North America CAT4 LTE Bands 2, 4, 5, 12, 3GPP release 10
Bandwidth up to 150/50 Mbps Download/Upload
3G Fallback UMTS/WCDMA bands 2/5, 3GPP release 8

VOXL-ACC-LTEH-DOD / World

The ModalLink system uses Band 3 modems to operate in the DOD’s 1800MHz spectrum. The same add-on board can be used for international use.

Specicifcation Value
CAT4 LTE Band 1,2,3,5,7,8,20,28,38,40
Bandwidth up to 150/50 Mbps Download/Upload

SIM Cards and Supported Networks

The modem card requires the use of a Nano SIM card.

AT&T, Verizon and T-Mobile are supported. For Band 3 support, the VOXL-ACC-LTEH-DOD modem is requiered and Band 3 SIM cards need to be requested through ModalAI.

LEDs

Status LEDs

LED Description
PWR Illuminates GREEN when the board is powered
MODEM Illuminates GREEN when the modem is powered
WWAN Illuminates solid BLUE when connected to the network

USB LEDs

The Modem USB Power and USB Port Power LEDs illuminate green to indicate the USB bus and ports are powered

Connector Pinouts

J11 - Serial Debug Port

  • Connector - BM04B-SRSS-TB
  • Mating Connector - SHR-04V-S-B
Pin Description
1 3.3 VDC
2 UART_RX_3P3V
3 UART_TX_3P3V
4 GND

J16 - USB Port 1

  • Connector - 4 Position JST GH, Vertical, BM04B-GHS-TBT
  • Mating Connector - JST GHR-04V-S
Pin Description
1 5VDC (500mA max)
2 D-
3 D+
3 GND

J17 - USB Port 2

  • Connector - 4 Position JST GH, Vertical, BM04B-GHS-TBT
  • Mating Connector - JST GHR-04V-S
Pin Description
1 5VDC (500mA max)
2 D-
3 D+
3 GND

RF Characteristics

Specicifcation Value (3GPP)
TX Power (LTE) 23 dBm (typical)
TX Power (WCDMA) 24 dBm (typical)
RX Sensitivity (LTE) -102 dBm (typical)
RX Sensitivity (WCDMA) -110 dBm (typical)

Environmental

Operating Temperature

Parameter Min Max Unit
LTE System Functional -40 +60 ºC
Module Functional -40 +85 ºC
Module 3GPP Compliant -20 +60 ºC

Emergency Boot Switch

Typically left in the OFF state, this switch can be used to enable emergency boot mode. More information can be found here.