User's Manual

EMS Wireless Operator’s Manual
EkoLink II
36
After the system is installed there should be no need for periodic cleaning of
the fiber connectors.
4.0 Specifications
The specifications are divided into several sections including:
• Link Performance Specifications
• User Requirement Specification
• Hub Specifications
• AC Power Supply Specifications
• DC Power Supply Specifications
• RF Combiner Specification
• Remote Specifications
• Alarm Output Specifications
4.1 Link Performance specifications
The performance levels shown in Table 2 are for an optical loss budget of 5
dB, which is the typical optical path loss for 10 km optical fiber and a pair of
optical connectors. Optical reflection in both directions must be must be less
than -40 dB. Otherwise, the overall system performance may be degraded.
PARAMETER DOWNLINK UPLINK
Passband: PCS
DCS (L)
DCS (H)
Cellular
GSM
ESMR
1930 to 1990 MHz
1805 to 1855 MHz
1830 to 1880 MHz
869 to 894 MHz
935 to 960 MHz
851 to 869 MHz
1850 to 1910 MHz
1710 to 1760 MHz
1735 to 1785 MHz
824 to 849 MHz
890 to 915 MHz
806 to 924 MHz
Optical Budget 5 dB 5 dB
Composite RF Input +20 dBm -100 to -55 dBm/ch
RF Loss (at 25
o
C)
0 dB ± 2 dB 0 dB ± 2 dB
Response Flatness
± 2 dB ± 2 dB
Gain Variation over
Temp
± 2 dB ± 2 dB
Downlink 2-Tone Output
Carrier to 3rd Order
Intermodulation
>48 dB (RF
out
/tn = 17
dBm)
≥50 dB (RF
in
/tn = -58
dBm)
Output Carrier to Noise: