Product Description

Product Description
28 (98) © Nokia Corporation Draft DN991444
Nokia Proprietary and Confidential Issue 3-0 en Draft
The TRX test covers all functions between the Abis and Air interfaces: digital and
RF parts, antenna cable detection, RX sensitivity, and TX level. The main reason
for providing a single multipurpose test is to minimise the total test time; once the
time slot is reserved for testing, the test time is used effectively. The test utilises
the multifunctional RF loop and it is automatically performed for both RX
branches. The test time is approximately 15 seconds. The test can be used as an
RF performance supervision test when performed according to a regular schedule
from the NMS/2000.
For more information on the TRX test refer to the Software Release Binder.
3.5.3 Battery backup with Nokia MetroSite Battery Backup
If additional battery backup is needed, the Nokia MetroSite Battery Backup unit
can be used for this purpose. The Nokia MetroSite Battery Backup provides one
hour backup time for the Nokia MetroSite EDGE Base Station operating at 400
W. The Nokia MetroSite Battery Backup is an external unit with the same
appearance and mounting options as the Nokia MetroSite Base Station itself.
For more information on Nokia MetroSite Battery Backup, refer to Nokia
MetroSite Battery Backup User Manual.
3.5.4 Temperature control
The Nokia MetroSite EDGE Base Station operates in the ambient temperatures
ranging from -40ºC to +50ºC (-40ºF to +122ºF), solar radiation 1120 W/m
2
.
Figure 4. Temperature management diagram
-40
O
C
-40
O
F
-10
O
C
+14
O
F
+10
O
C
+50
O
F
+20
O
C
+68
O
F
+50
O
C
+122
O
F
HEATING COOLING
full
heating
reduced
heating
cooling on
variable fan speed
heating off/
cooling off