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User Manual
Airbridge cBTS3612 CDMA Base Station
Control line, signal line (outdoors)
& Note:
The test method is the same as IEC61000-4-5 [11].
6) Common-mode fast transient pulse
The signal & data line between CDMA cabinets and that connected with other
systems (such as E1 trunk line), control line and cable connected to DC input/output
port, should be the requirement for fast transient pulse anti-interference level. The
threshold value is shown in Table B-8.
Table B-8 Threshold value
Signal control line port
DC line input/ output port
AC line input port
& Note:
Performance class A: it means that BTS can withstand the test without any damage and it can run
normally in the specified range. There is not any change in the software or data (all data in the storage
or the data being processed) related to the tested switching equipment. Equipment performance is not
lowered.
Performance class B: it means that BTS can withstand the test without any damage. There is no
change in the software or the data in storage. Communication performance is lowered a little, but in the
tolerance (as defined for different products). The existing communication link is not interrupted. After
the test, the equipment can recover to the normal status before the test automatically without any
interference of the operator.
Performance class C: some functions of BTS are lost temporarily during the test, but they will recover
to normal performance in a specific period after the test (normally the shortest time needed for system
reboot). There is no physical damage or system software deterioration.
Performance class R: after the test, there is no physical damage or fault (including software corruption)
with BTS. Protection equipment damage caused by external interference signal is acceptable. When
the protection equipment is replaced and the running parameters are re-configured, the equipment can
operate normally.
Test port
Line~ line, 1kV
Line~ ground, 2kV
Test port
Test level
Test level
0.5kV
1kV
2kV
B-4
System Description
Appendix B EMC Performance
Performance class
B
Performance class
B
B
B
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