CDMA and GSM / UMTS Mini Card Hardware Integration Guide
90
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.
g.
AT!RX2AGC?
(Reads
back
the
power
level,
in
dBm,
from
the
diversity
receiver)
Response
examples:
·
RX2AGC
=
0xFFFFFF76
=
‐
84
dBm
(when
signal
generator’s
RF
port
is
OFF)
·
RX2AGC
=
0xFFFFFFC6
=
‐
69
dBm
(when
signal
generator’s
RF
port
is
ON)
typical
h.
AT!RX=0
(Turns
off
main
receiver)
i.
AT!RX2=0
(Turns
off
diversity
receiver)
3.
Test
limits
Run
ten
or
more
good
DUTs
through
this
test
proce
‐
dure
to
obtain
a
nominal
received
power
value.
·
Apply
a
tolerance
of
±
5
to
6
dB
to
each
measurement
(assuming
a
good
setup
design).
·
Make
sure
the
measurement
is
made
at
a
high
enough
level
that
it
is
not
influenced
by
DUT
‐
generated
and
ambient
noise.
·
The
Signal
Generator
power
level
should
be
at
least
‐
50
dBm.
·
Monitor
these
limits
during
mass
‐
production
ramp
‐
up
to
determine
if
further
adjustments
are
needed.
Note: The value measured by the DUT depends on the test setup and
DUT design. Host RF cabling loss, antenna efficiency and pattern,
test antenna efficiency and pattern, and choice of shield box all signifi-
cantly influence the measurement.
Note: When doing the same test over the air in an RF chamber,
values are likely to be significantly lower.
Testing RF Receive path—MC87xx
Note: This procedure segment is performed in Step
of the
(
).
contains
parameters
used
in
the
suggested
test
procedure
that
follows.