Xplore Technologies Corp. MC7750 Manual Do Utilizador

RF Specifications

Rev 4  Sep.11

Proprietary and Confidential - Contents subject to change

41

Note that antenna impedance affects radiated emissions, which must be 
compared against the conducted 50-ohm emissions baseline. (AirPrime 
embedded modules meet the 50-ohm conducted emissions requirement.)

A wireless host device contains many noise sources that contribute to a reduction 
in Rx performance.

To determine the extent of any receiver performance desensitization due to self-
generated noise in the host device, over-the-air (OTA) or radiated testing is 
required. This testing can be performed by Sierra Wireless or you can use your 
own OTA test chamber for in-house testing.

Although AirPrime embedded modules are designed to meet carrier requirements 
for receiver performance, they are still susceptible to various performance 
inhibitors.

As part of the Engineering Services package, Sierra Wireless offers modem OTA 
sensitivity testing and desensitization (desense) investigation. For more 
information, contact your account manager or the Sales Desk (see 

 on page 4).

For CDMA bands, sensitivity is defined as the input power level in dBm that 
produces a FER (Frame Error Rate) of 0.5%. Sensitivity should be measured at 
all CDMA frequencies across each band.

For LTE bands, sensitivity is defined as the RF level at which throughput is 95% of 
maximum.

The MC7750 supports:

Single-band LTE — See 

 on page 42.

Dual-band CDMA — See 

 on page 42.

GPS

Radio transceiver requirements for 3GPP Release 7