1xEV-DO Signaling
R&S
®
CMW-KG8xx/-KM8xx/-KS8xx
31
User Manual 1173.9511.02 ─ 11
2.2.13.2
Time Settings
Synchronized CDMA system times are critical for hybrid mode. See
on page 77 for details about the possible time settings.
Time Settings for One SUU
Each SUU can have only one time setting at a time. With CDMA2000 signaling and
1xEV-DO signaling sharing the same SUU, the time settings will affect each other. The
first of these FWAs to start will apply the time settings. Unless the parameter "Apply
Time At" has been set to enforce the time setting, any subsequent Signal On of either
one of the FWAs will use these time settings and ignore the other time setting parame-
ters.
This makes sure that unnecessary updates are avoided and that the time settings for
both FWAs are synchronized when the hybrid mode has been selected. If one FWA is
running in hybrid mode and the 2nd FWA is being started with new time settings, this
will affect the running FWA and lead to call drops. It is recommended to switch both
FWAs off, change the time settings on one FWA and then switch them subsequently
on starting with the FWA that applies the new time settings.
Time Settings for Two SUU
Generally, the time settings on two or more SUU are independent from each other,
even if they are both in one CMW. The reason for this is that it shall be possible to run
each SUU with entirely different time settings.
The only way to synchronize the time settings between two SUU is to use the "Sync
Code". One SUU needs to be configured as a master, the 2nd SUU as a slave:
●
On the master SUU, configure Time Source to "CMW Time" or "Date/Time"
●
Switch Signal-On on master SUU, the "Sync Code" parameter will be updated.
●
On the slave SUU, configure "Time Source" to "Sync Code" and copy the value of
the master's "Sync Code".
●
Switch Signal-On on slave SUU. The time is now synchronized.
2.2.13.3
Hybrid Mode on a Single SUU
In this mode, the signaling firmware applications CDMA2000 and 1xEV-DO run in par-
allel on the same SUU (in particular they run on the same R&S
CMW).
Prerequisites
The minimum hardware and software configuration for hybrid mode with a single SUU
is a single CMW equipped with
●
Extra RF Converter Module (R&S CMW-B570B)
●
SUU Module (R&S CMW-B200A) equipped with
–
CDMA2000 signaling extension module (R&S CMW-B220A) and
–
1xEV-DO signaling extension module (R&S CMW-B230A)
●
software option CDMA2000
®
1xRTT basic signaling (R&S CMW-KS800)
●
software option CDMA2000
®
1xEV-DO basic signaling KS880 (R&S CMW-KS880)
General Description
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