EXPRESS DAS
Installation and Operations Manual
EXPRESS DAS Installation and Operations Manual – Version 2.2 November 2013
113
12.6.1 Validating the Uplink Path
1- Using the signal generator, set the desired Rx frequency and the output power to -50dBm.
2- Using the spectrum analyzer, verify the power level at the end of the cable connecting to the MRU.
3- In the management software, verify the PD optical power.
4- Using the spectrum analyzer, check the RF level at the Rx port of the ODU chassis.
5- Using the spectrum analyzer, check the RF level at the end of the cable connecting to the BIU ODU Rx
port.
6- Using the spectrum analyzer, check the levels coming from the Rx monitor test ports at the front of the
MDBU. This value should be -20dBm.
7- Using the spectrum analyzer, check the levels coming out of the MDBU Rx port at the back of the BIU
that goes back to signal source (BTS or BDA).
Figure 12.9 – Validating the Uplink Path
Step /
Band
800
850
900
1900
2100
1
-50dBm
-50dBm
-50dBm
-50dBm
-50dBm
2
-50dBm ±1dB
-50dBm ±1dB
-50dBm ±1dB
-50dBm ±1dB
-50dBm ±1dB
3
+4 to -3dBm
+4 to -3dBm
+4 to -3dBm
+4 to -3dBm
+4 to -3dBm
4
-7dBm±2dB
-7dBm±2dB
-7dBm±2dB
-7dBm±2dB
-7dBm±2dB
5
-7dBm±2dB
-7dBm±2dB
-7dBm±2dB
-7dBm±2dB
-7dBm±2dB
6
-20dBm±2dB
-20dBm±2dB
-20dBm±2dB
-20dBm±2dB
-20dBm±2dB
7
0dBm±2dB
0dBm±2dB
0dBm±2dB
0dBm±2dB
0dBm±2dB
Table 12.3 – Recommended Test and Link Budget Values Per Band for Uplink Path
Содержание EXPRESS Single-Carrier DAS
Страница 10: ......