Comba Telecom SP-2110, Руководство по эксплуатации оборудования

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EQUIPMENT MANUAL FOR SP-2110
SP-2110 QE
Copyright - refer to title page
Page 28
ENU Status : 1-3-1
4.3 SYSTEM COMMISSION
After the monitoring system has been initialized, system commission can be operated manually
without using any professional commissioning instruments.
Commissioning Tasks Observation
1. Check power supply,
antenna and feeder cable
•
Make sure the working voltage of the PSU is within the
working range and correct connection of power mains.
•
Make sure the antenna frame, feeder cable and the
equipment are all well grounded.
•
After switching of AC power, system commissioning can be
commenced after the internal monitoring system has been
initialized.
2. Remove enclosure cover. •
Disengage the latch the of the cover to review the internal
•
electronics.
•
System commissioning can be operated manually through
operating on the three dial switches located on the panel.
(refer to figure 10)
•
Check the input ALC limit and make sure the DL
ALC ≤ 10dBm, UL ALC ≤ 10dBm
3. Set operating frequency
•
Set the operating frequency by operating “Freq Control”
switch. For WCDMA network, there are 12 channels and
band-selectivity can be proceeded with effectively within the
60MHz band of the WCDMA network. It is adjusted based on
the band width of the equipment. Refer to table 9 for the
comparison between the switch-setted working channel and
the actual working channel.
•
Offset the presetted operating frequency presetted by “Freq
Control” by operating “Freq Offset” switch. The offset range
is ±700kHz and is defaulted as 0Hz.
4. Set gain
•
Set system gain by operating “Gain” switch. It is defaulted as
60dB. When swiched to “Auto”, the system gain can be
adjusted automatically according to the actual input signal
strength.
Note: Auto Attenuator will be triggered, if there is an input signal higher than -40dBm, which is to
protect components from a strong signal input. The maximum auto attenunator is 20dB.
Table 7: SP-2110 system commissioning procedures
Switch-
Setted
Working
Channel
CH1 CH2 CH3 CH4 CH5 CH6 CH7 CH8 CH9 CH10 CH11 CH12
5MHz Actual
Working
Channel CH1 CH2 CH3 CH4 CH5 CH6 CH7 CH8 CH9 CH10 CH11 CH12
10MHz
Actual
Working
Channel
CH1
CH2 CH2
CH3 CH3
CH4 CH4
CH5 CH5
CH6 CH6
CH7 CH7
CH8 CH8
CH9 CH9
CH10
CH10
CH11 CH11
CH12
invalid
15MHz
Actual
Working
Channel
CH1
CH2
CH3 CH2
CH3
CH4 CH3
CH4
CH5 CH4
CH5
CH6 CH5
CH6
CH7 CH6
CH7
CH8 CH7
CH8
CH9 CH8
CH9
CH10
CH9
CH10
CH11
CH10
CH11
CH12
invalid invalid