Specifications

Chapter 4 103
Tests
TEST_14 TX RACH Test
TEST_14 TX RACH Test
Description This test verifies the mobile station transmitter’s ability to generate a
Random Access Channel (RACH) that meets specifications.
A RACH is used by the mobile station during a mobile originated call or
location update to gain access to the GSM system. The test data for a
RACH measurement is similar to a traffic channel.
• TX RACH frequency error
• TX RACH phase error (rms and peak)
• TX RACH power error
• TX RACH amplitude envelope
• TX RACH amplitude (negative and positive) peak flatness
• TX RACH burst timing error
Specifications
Spec Description Units GSM900
default
lower
limit
GSM900
default
upper
limit
DCS1800
default
lower
limit
DCS1800
default
upper
limit
PCS1900
default
lower
limit
PCS1900
default
upper
limit
27 TX RACH
burst timing
measurement
T −1.0 1.0 −1.0 1.0 −1.0 1.0
28 TX RACH
frequency
error
Hz −90.0 90.0 −180.0 180.0 −190.0 190.0
29 TX RACH
peak power
error
dB This specification is now fixed in the software. See page 128 for
details.
30 TX RACH
phase error
(peak)
degrees 20.0 20.0 20.0
31 TX RACH
phase error
(rms)
degrees 5.0 5.0 5.0
32 TX RACH
power/time
template at
±10µs
dB −6.0 −6.0 −6.0