VT740 / LTE slot modem (for VT335i, VT825i, VT855i) (legacy)

Owned by Vladimir Tayzhev
Last updated: Jul 22, 2024 by Vasily T.
3 min read

Product page: https://vutlan.com/modems/165-vt740-lte-slot-modem.html

 

 

Datasheet page: https://vutlan.atlassian.net/wiki/spaces/DEN/pages/2735931393/VT740+LTE+slot+modem

 

Usage

Allows to receive and send messages (2G, 3G). Provides Ethernet over LTE (4G). Can be installed in VT335i , VT825i, VT825ii, new VT825DC, VT825DCDC, VT825iDC, VT855i, VT855ii, VT855DC, VT855iDC monitoring systems.

Inventory

Description

4G LTE slot modem for Vutlan monitoring units. Allows to receive and send SMS messages. Provides Ethernet over 4G LTE. Power-cycling is an embedded function.

Panel

 

  1. "Auxiliary" - Connector, used when the modem is installed inside of the appliance to connect LTE auxiliary antenna. The additional antenna helps to strengthen the signal level. ( Auxiliary LTE antenna is supplied together with the modem).

  2. "Status" - displays modems status. Blinking = working.

  3. "SIM card" - SIM card slot with an injector.

  4. "Main antenna" - Connector, used when the modem is installed inside of the appliance to connect LTE main antenna. ( The main antenna is supplied together with the modem).

VT740 has a miniature RF connector on the board for connecting GNSS antenna. GNSS antenna is not sold together with VT740.

Installation

You can install the modem while the system is turned On. You may wait up to 3 minutes until the Telecom operator information is renewed.

Step 1

1.1 Use the wire cutter tool to cut off the metal panel labeled “LTE Modem slot”.

You can dispose of the metal panel after.

Step 2

Plug the VT740 slot modem as shown on the picture into the opening. The board should slide into the guide rails (marked as “1”) and plug into the jack (marked as “2”).

Step 3

3.1 Screw the main LTE antenna into “Main” antenna” jack.

3.2 If you want to strengthen the signal, you can screw in the second auxiliary antenna into “Auxiliary” jack.

 

 

Step 4

Plug in the micro SIM card. The SIM card slot has an injector.

Step 5

 

You are ready to go! Turn on the system.

You can install the modem while the system is turned On. You may wait up to 3 minutes until the Telecom operator information is renewed.

Configuring the modem

Please read the following section for the configuration instructions:

Online documentation page link: Setting up a modem

The direct page link for users with paper documentation:

https://vutlan.atlassian.net/wiki/spaces/DEN/pages/1016347/Setting+up+a+modem

Technical specifications

Specifications

Specifications

GSM/GPRS/EDGE 900/1800 MHz

Control Via AT Commands

GNSS gps One Gen 8B;standalone;assisted,XTRA

Uplink up to 5Mbps, Downlink up to 10Mbps

ROHS, REACH, CE

Modem errors:

Problem

Cause

Solution

Problem

Cause

Solution

Modem is not initializing. Power light status is not working.

  1. The cable has disconnected due to transportation.

  2. The unit is not updated to the latest driver version.

  3. An incorrect converter board is installed inside the unit by mistake.

  1. Power down the device. Open the unit’s case. Check the cable is connected.

  2. Please, update the unit to the latest version.

  3. Check if you have a correct converter board installed inside the unit.