Specifications

AirPrime Embedded Module Hardware Integration Guide
86 Proprietary and Confidential 2130114
Note: Actual measured
results will vary, depending
on your testing setup.
3. Take measurements using the following commands (Note that the module
has a gain of 4 dB in audio loopback mode.):
a. Press the
ACV button to measure the AC level.
· Expected range: 1–2.5 VAC
b. Press the
FREQ button to measure the frequency.
· Expected value: 1 kHz
c. Press the
Shift and THD buttons at the same time to measure the total
harmonic distortion.
· Expected value: < 1%
d. Reset the audio parameters:
· (MC5727V/MC5728V)
AT!AVAUDIOLPBK=0 (Disables audio loop-back mode)
· (MC8775V/MC8790V/MC8791V/MC8792V/MC8795V)
AT!AVDEF (Set configurable audio parameters to default values.)
Quality assurance testing
Note: QA is an ongoing
process based on random
samples from a finished
batch of devices.
The quality assurance tests that you perform on your finished products should be
designed to verify the performance and quality of your devices.
The following are some testing suggestions that can confirm that the antenna is
interfaced properly, and that the RF module is calibrated and performs to
specifications:
• Module registration on cellular networks
• Power consumption
• Originate and terminate data and voice (if applicable) calls
• Cell hand-off
• Transmitter and receiver tests
• FER (Frame Error Rate) as an indicator of receiver sensitivity/performance
• Channel and average power measurements to verify that the device is trans-
mitting within product specifications
• RF sensitivity tests
•
MC57xx-specific:
· Waveform quality tests (calculating the “rho” parameter) to compare the
CDMA signal’s power distribution against the ideal distribution—rho must
be >0.97 with max freq error of 0.5 to pass.
· FER testing—Test receiver sensitivity for conditions of minimum cell power.
FER can be measured for the specified receiver sensitivity of -104 dBm.
The objective of this test is to determine if the FER measured is within the
acceptable limits for the specified receiver sensitivity of the module. Unlike
the FER tests performed during production testing, this test determines the
receiver performance without the influence of the noise factor (AWGN), but
with extremely low cell power. The reported FER and the confidence level
must be <1% and >95% respectively for the test to be considered a pass.
• MC8xxx-specific:
· RF sensitivity testing—BER/BLER for different bands and modes
· Transmitter and receiver tests (based on relevant sections of the 3GPP
TS51010 and 3GPP 34121 documents)