LTE Modem and USB Add-on Datasheet
Board Connections and I/O
Physical Specification
| Specicifcation |
Value |
| Weight |
12g |
| Dimensions |
|
| 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 Matimg 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-030-02- L-D-A-K |
| J7 Mating Connector |
Samtec Inc., MPN: QSH-030-01-L-D-A-K |
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.
USB Ports
Two USB 2.0 compliant ports
Debug Ports
Serial debug port
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
| Pin |
Description |
| 1 |
3.3 VDC |
| 2 |
UART_RX_3P3V |
| 3 |
UART_TX_3P3V |
| 4 |
GND |
J16 - USB Port 1
| Pin |
Description |
| 1 |
5VDC (500mA min) |
| 2 |
D- |
| 3 |
D+ |
| 3 |
GND |
J17 - USB Port 2
| Pin |
Description |
| 1 |
5VDC (500mA min) |
| 2 |
D- |
| 3 |
D+ |
| 3 |
GND |
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 |
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.