Cisco Cisco OptoStar II Reverse Receivers Installationsanleitung
Operating using ICIM LCD, Continued
Sub-menu 1 -- Gain Control/RF Input Level
The illustration below shows sub-menu 1 of the OptoStar II forward driver
amplifier module - Gain Control/RF Input Level.
amplifier module - Gain Control/RF Input Level.
The left side of the LCD interface displays the slope control and manual gain
control of the RF output signal, and the right side displays input level value.
For the display of RF input level, there are two situations:
1. If the RF input signal contains analog signal and digital signal, RF input level
control of the RF output signal, and the right side displays input level value.
For the display of RF input level, there are two situations:
1. If the RF input signal contains analog signal and digital signal, RF input level
displays the average level of the single channel analog signal at the broadcast
RF input port. The forward driver amplifier module detects the total power
of RF signal. The average level of single channel digital signal is calculated
according to the actual channel number and the D-value of analog and digital
channels as set by the customer.
For example: Input 59 channels in the analog signal, 15 dBmV/channel at the
broadcast RF input port, 53 channels in the digital signal, 9 dBmV/channel at
the broadcast RF input port, the D-value between digital signal and analog
signal is set to 6 dB, RF input level displays 15 dBmV, the digital signal level
is the displayed RF input level minus 6 dB.
RF input port. The forward driver amplifier module detects the total power
of RF signal. The average level of single channel digital signal is calculated
according to the actual channel number and the D-value of analog and digital
channels as set by the customer.
For example: Input 59 channels in the analog signal, 15 dBmV/channel at the
broadcast RF input port, 53 channels in the digital signal, 9 dBmV/channel at
the broadcast RF input port, the D-value between digital signal and analog
signal is set to 6 dB, RF input level displays 15 dBmV, the digital signal level
is the displayed RF input level minus 6 dB.
Continued on next page
3-8
Operation
OL-29667-02