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Videos & Tutorials

Troubleshooting Cellular Modems - 15:29

Downloads

ACEManager v.3.3.0 (11.4 MB) Download Now

ACEManager is a configuration and diagnostic tool for the Sierra Wireless AirLink Raven modems.

Modem Doctor v.4.0.0.23 (1.37 MB) Download Now

Modem Doctor is a diagnostic tool for the Sierra Wireless AirLink Raven modems.

Raven GPRS/EDGE PPP Template 115200 v. (28 K) Download Now

For use with AT&T and other (GPRS/EDGE) Raven modems.

This template file is used with the Sierra Wireless ACEManager software to configure the AirLink Raven modem to 115200 baud communicating with the datalogger using PPP (point-to-point protocol).  Using PPP allows access to the dataloggers IP capabilities (Email, HTTP, FTP, etc). The CR800, CR1000 and CR3000 dataloggers supports PPP.

Raven GPRS/EDGE Template 115200 v. (28 K) Download Now

For use with AT&T and other (GPRS/EDGE) Raven modems.

This template file is used with the Sierra Wireless ACEManager software to configure the AirLink Raven modem to 115200 baud.  The CR800, CR1000 and CR3000 dataloggers communicate at 115200 baud.

Raven GPRS/EDGE Template 9600 v. (27 K) Download Now

For use with AT&T and other (GPRS/EDGE) Raven modems.

This template file is used with the Sierra Wireless ACEManager software to configure the AirLink Raven modem to 9600 baud.  The CR200(X), CR10(X), CR510, CR500, 21X and CR7 dataloggers communicate at 9600 baud.

FAQs

Is a wireless cellular phone transmitter available for Campbell Scientific dataloggers?

Yes. Both the RavenXTV (Verizon) and the RavenXTG (AT&T) are available.

Do the RavenXTV and the RavenXTG come with a half-wave antenna?

No. A half-wave antenna may not work in the transmission area. Several antenna options, however, are available for purchase:

  • 21831 – a half-wave dipole whip antenna
  • 18285 – a dual-band, omnidirectional antenna
  • 20679 – a dual-band, omnidirectional antenna
  • 10530 – a high-gain, directional (Yagi) antenna
Do the RavenXTV and the RavenXTG require a dipole cellular antenna?

No. A dipole antenna, such as the 21831, transmits a short distance, emitting a signal 360° around the antenna plain. To transmit to a distant point, a Yagi antenna, such as the 10530, is a more appropriate option.

Do the RavenXTV and the RavenXTG have an RS-232 DB9 connector?

Yes. Both modems connect to a datalogger using an RS-232 9-pin connector for their communication.

Do the RavenXTV and the RavenXTG run on 12 Vdc?

Yes. These modems have an input voltage range of 6 to 28 Vdc.

What configuration settings need to be made to a RavenXTG to make an AT&T network mobile-to-mobile connection?

AT&T’s standard Access Point Names (APN) do not allow mobile-to-mobile connections within their network.  However, a mobile device on a non-AT&T network would be able to connect to an AT&T mobile device; for instance, connect with LoggerLink on a Verizon device to a datalogger with a RavenXTG.  For more details, contact an application engineer at Campbell Scientific.

Can a RavenXTG be used in an application outside of the U.S.?

Yes. The RavenXTG uses the GPRS/GSM technology, which is commonly used throughout the world.  However, be sure to check with the service providers to verify what network technology they use.

Why is the SC105 recommended for connecting a RavenXTV or RavenXTG to a datalogger with a PakBus operating system?

Using an SC105 with a RavenXTV or RavenXTG cellular modem allows for the two devices to communicate at differing baud rates. It also allows for other devices, such as an RF401 radio or CR1000KD handheld display, to simultaneously be connected to the datalogger’s CS I/O port.

Are there any unique cabling requirements to connect a CR800 or CR850 with a Raven XT-series modem?

A standard null modem cable can be used to connect a RavenXT-series modem to the datalogger RS-232 port. Alternatively, an SC12 cable and an SC105 interface can be used to connect the RavenXT-series modem to the datalogger CS I/O port.

What needs to be done to have a data table sent to an FTP server using a RavenXTV or a RavenXTG?

For the datalogger to transfer data via FTP, the modem has to be set up to use a PPP connection between it and the datalogger.

Is it possible to network two dataloggers to download data from both over a single cellular phone using a Raven XT-series modem?

It is not possible to connect two dataloggers to one modem and transmit data from both dataloggers. However, two dataloggers can be networked together so that data is sent from one datalogger to the other, and then the datalogger connected to the modem can transmit the data from both dataloggers.

How can the RavenXTG or RavenXTV be coded to only work for a couple hours when the data is to be sent to the server?

The simplest and most robust way of doing this is to program the datalogger to turn the modem on and off at the user-specified times. For more information, see the “Decisions, Decisions, Decisions…” article. 

If the RS-232 connection between a datalogger and a Raven XT-series modem works fine, but the CS I/O connection does not work, what might be the cause?

To connect the modem to the datalogger’s CS I/O port, either the SC932A or the SC105 must be used.  This communication also depends on the configuration of the ports on the modem and datalogger (PPP versus serial server); the two must match.

If the connection can no longer be made to a datalogger that is connected to a Raven XT-series modem via an RS-232 port, what might be the reason?

There are three main reasons that a datalogger might lose communication over a cellular modem:

  • Loss of power
  • Physical damage
  • Network service issues

Contact an application engineer at Campbell Scientific for assistance with troubleshooting.

What criteria should be used to select an antenna?

Antenna selection depends on multiple criteria: 

  • Consider how many stations a particular station needs to communicate with. For remote stations in communication with only one repeater or base station, a directional or Yagi antenna may be an appropriate choice. In contrast, repeater stations that receive data from many different locations will probably require an omnidirectional antenna. 
  • Consider if a high-gain antenna is needed to overcome the path between two points. Higher-gain antennas are larger and more expensive. 

To help with antenna selection and site placement, consider renting and using a demo kit to test the pathway quality. Campbell Scientific offers a 900 MHz demo kit for the RF401, RF430, CR206X, and AVW206, as well as a demo kit for the RF450. Contact an application engineer at Campbell Scientific for assistance.

Resources and Links

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(1) Power cable from original mfg