CDMA and GSM / UMTS Mini Card Hardware Integration Guide
96
Proprietary and Confidential
2130114
In the event of a discrepancy in values between this guide and the Product Specification Document (PSD), the PSD takes precedence.
c.
AT!AVCODECSTG=0,FFFF
(Sets
sidetone
gain
for
audio
profile
0)
3.
Take
measurements
using
the
following
commands
(Note
that
the
module
has
a
gain
of
4
dB
in
audio
loopback
mode.)
Note: Actual measured results
will vary, depending on your
testing setup.
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:
·
(MC5725V
/
MC5727V
/
MC5728V)
AT!AVAUDIOLPBK=0
(Disables
audio
loop
‐
back
mode)
·
(MC8775V
/
MC8785V
/
MC8790V
/
MC8791V
/
MC8792V)
AT!AVDEF
(Sets
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
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
sensi
‐
tivity
/
performance
•
Channel
and
average
power
measurements
to
verify
that
the
device
is
transmitting
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
the
receiver
sensitivity
for
conditions
of
minimum
cell
power.
FER
can
be
measured
for
the
