Cisco Cisco OptoStar II 1550nm Transmitter Installation Guide
Operating using ICIM LCD, Continued
2. The RF input signal contains only digital signal. When the RF signal is input
from the broadcast RF input port, the RF input level equals to the average
level of the single channel digital signal at the broadcast RF input port. When
the RF signal is input from the narrowcast RF input port, the RF input level
plus 12dB equals to the average level of the single channel digital signal at the
narrowcast RF input port. The forward driver amplifier detects the total
power of the 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 0 channel in the analog signal, 77 channels in the digital
signal, 15 dBmV/channel at the broadcast RF input port, the D-value
between digital signal and analog signal is set to 0 dB, RF input level displays
15 dBmV.
level of the single channel digital signal at the broadcast RF input port. When
the RF signal is input from the narrowcast RF input port, the RF input level
plus 12dB equals to the average level of the single channel digital signal at the
narrowcast RF input port. The forward driver amplifier detects the total
power of the 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 0 channel in the analog signal, 77 channels in the digital
signal, 15 dBmV/channel at the broadcast RF input port, the D-value
between digital signal and analog signal is set to 0 dB, RF input level displays
15 dBmV.
The default output slope of RF output signal is 0 dB, and manual gain control is 0
dB. The cursor stays in the setting field by default.
dB. The cursor stays in the setting field by default.
•
To set slope of RF output
1. Press SET button to start the configuration;
2. Press ▲▼ buttons to change the value (range: 0~9 dB, step 0. 5 dB), and
2. Press ▲▼ buttons to change the value (range: 0~9 dB, step 0. 5 dB), and
press SET button to confirm;
3. Press ► button to move the cursor to “Set”;
4. Press SET button to save the configuration.
4. Press SET button to save the configuration.
•
Manual Gain Control (MGC)
1. Press ▼ button to leave the cursor in the “MGC” field;
2. Press SET button to start the configuration;
3. Press ▲▼ buttons to change the value (range: -9~0 dB, step 0. 5 dB), and
2. Press SET button to start the configuration;
3. Press ▲▼ buttons to change the value (range: -9~0 dB, step 0. 5 dB), and
press SET button to confirm;
4. Press ► button to move the cursor to “Set”;
5. Press SET button to save the configuration.
5. Press SET button to save the configuration.
Continued on next page
OL-29667-02
Operation
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