User's Manual Part 2

ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 3: OPERATION
Page 3-16
© 2005, ADC Telecommunications, Inc.
Figure 3-12. Host Rev Att Pop-Up Screen
6. Enter the attenuation value that will provide the required gain. Refer to Table 3-2 for the
attenuation values and the corresponding gain (nominal) values.
7. Click OK to close the pop-up screen and to make the changes take effect.
2.7 Reference Procedure: Enter Host Forward and Reverse Delay
The forward and reverse delay function allows entry of from 0 to 63 µsec of delay in the
forward and reverse paths. This feature is used when multiple systems are used to transport the
same channel and there is a significant difference in the path delay between systems. Additional
delay may be entered to balance the overall system delay. The amount of delay required must be
calculated by the RF engineer and should be included in the system design plan. The default
setting is 0 µsec. Use the following procedure to change the forward and reverse path delay:
Table 3-2. Reverse Path Attenuation Setting and Nominal Gain Provided
ATTENUATION
SETTING
GAIN
PROVIDED
ATTENUATION
SETTING
GAIN
PROVIDED
ATTENUATION
SETTING
GAIN
PROVIDED
0 dB → 30 dB 11 dB → 19 dB 22 dB → 8 dB
1 dB 29 dB 12 dB 18 dB 23 dB 7 dB
2 dB 28 dB 13 dB 17 dB 24 dB 6 dB
3 dB 27 dB 14 dB 16 dB 25 dB 5 dB
4 dB 26 dB 15 dB 15 dB 26 dB 4 dB
5 dB 25 dB 16 dB 14 dB 27 dB 3 dB
6 dB 24 dB 17 dB 13 dB 28 dB 2 dB
7 dB 23 dB 18 dB 12 dB 29 dB 1 dB
8 dB 22 dB 19 dB 11 dB 30 dB 0 dB
9 dB 21 dB 20 dB 10 dB 31 dB –1 dB
10 dB 20 dB 21 9 dB