User Manual

AS8100 Sitespan User Guide Version 3.7
605-0000-426
DLP 069
Draft Issue 6.0 Date 4/4/00
Page 216 of 305
• AGC In ST View the value shown in the CRU Signal Strength AGC
box is the voltage measure from the RF stage of the CRU, and,
although related to, is not the same as the voltage measured at the CRU
terminal block. The graph below shows the relationship between the
AGC voltage and the ST receive level (dBm).
0
5
1.7
1.3
0.7
4
3
2
1
AGC
Volts
RX Level (dBm)
6dB Fade Margin
10dB Fade Margin
0dB Fade
Margin
RX AGC Equalised
Characteristic
-105 -80-100 -90 -70 -60
-55
-98 -92 -88
• Power Control In ST View the CRU Signal Strength Power Control measures
a voltage corresponding to the output power from the CRU. The graph below
gives the relationship between that voltage and the output power (dBm).
0
5
-25
0.3
1.0
1.4
4
3
2
PC
Volts
TX Level
(dBm)
TX PC Equalised
Characteristic
2-2.3GHz and 2.3-2.5GHz
+25 0+20 +10 -10 -20
10dB Fade Margin
6dB Fade Margin
0dB Fade
Margin
+21 +15 +11