5
Output optical power
MOS212A MOS212B MOS212C
6 dBm
8 dBm
10 dBm
Laser type
DFB
Modulation type
direct
Optical wavelength
1550 ± 10 nm
Frequency range
47-862 MHz
Flatness
± 0.75 dB
RF input level
70...85 dBµV
Relative intensity noise RIN
< - 155 dB/Hz
CNR
≥
50 dB*
CTB
≥
65 dBµV*
CSO
≥
58 dBµV*
Input attenuator control range
15 dB by step 0.5
Input equalizer control range
10 dB by step 0.5
Optical connector
SC/APC
Power consumption
198-250 V~ 50 Hz 10 W
Dimension/Weight (packed)
485x58.5x171 mm/3.8 kg
* Measurement conditions according EN50083-3, 42 CENELEC:
- input signal RF level in the connector RF TEST, typical, dBµV/chan:
A B C
70 72 75
- optical modulation index (OMI), %:
4.9
Optical receiver OD002 (TERRA) with external optical attenuator:
- input optical level, dBm:
-5
- attenuators, dB:
AT1=10, AT2=0, EQ=0
- RF output level, dBµV/chan:
102
On the rear side of cover is indicated accurate RF level for 42 channles signal. The RF level for N channel signal recalculate
according formula:
RfLevel (N)= RfLevel (42) - 10*log (N/42)
Comments of the front panel indicators: if the transmitter addressed - the indicator [4] glows green;
if the transmitter cannot determine subrack’s address - the indicator [4] is blinking;
in normal state - the indicator [5] glows green;
if the internal diagnostic system has detected the failure or alarm (see table 1, page 11) - the indicator [5] glows red.
During transmitter start-up after power on and switching to input channel - the indicator [5] glows yellow.
The adjustment of transmitter must be made about 20 min after inserting.
6. Default settings
Laser
Off
Attenuator, dB
0
Equalizer, dB
0
Gain ctl.
Manual
After powering of transmitter restarted the internal microcontroller recovers the settings before powering
lost.
Default DIP switch position
Unit Nr.
1
Pull-ups On
Last-unit On
Group Nr. 1
7. Technical specifications
