Diagram
Specifications:
1.optical character
|
|
parameter |
unit |
specification |
notes |
wavelength |
nm |
1310or1550 |
|
bandwidth |
MHz |
40~862 |
|
Frequency Response |
dB |
±1.0 |
1 |
Input Optical Power |
dBm |
-6.0~+2.0 |
|
Output Level |
dBmV |
14.0 |
2、3 |
RFoutput test |
dB |
-20±1.0 |
|
RF output Impedance |
Ω |
75 |
|
RF ouput Return Loss |
dB |
>12 |
|
Optical power test |
V/mw |
2.5 |
|
Optical direction range |
mw |
<0.2±0.02 |
|
Optical return loss |
dB |
>40 |
|
DCpower dissipation |
mA |
230 |
24V |
|
|
|
|
|
|
Notes:
- Flatness refers to P-P value.
- Optical transmitter’s OMI is 3.6% at 1310nm optical wavelength。
- Optical power received: 0dBm
2. RF
|
|
parameter |
unit |
specification |
notes |
Forward |
Reverse |
Bandwidth |
MHz |
47/87~750/862 |
5~30/65 |
|
Technology |
|
Power Double |
Push-Pull |
|
Flatness |
dB |
±0.5 |
±1.0 |
|
RF return loss |
dB |
>16 550MHz
>14 862MHz |
>16 |
|
AC current |
A |
10 |
|
|
AC Hum( at10A)
87 MHz ~600MHz
600 MHz ~862MHz
5 MHz ~15 MHz
15 MHz ~65 MHz |
dB |
70
65 |
—
70
65 |
|
DC current(24V) |
A |
2.1 |
0.3 |
|
Test port |
dB |
-20±1.0 |
-20±1.0 |
|
Recommended RF
output level |
dBmV |
48.0@862 MHz
46.5@750 MHz
44.0@550 MHz
38.0@87 MHz |
35@65 MHz
35@5 MHz |
1、2 |
Gain (max) |
dB |
35 |
22 |
3、4 |
Slope |
dB |
10 |
|
7 |
Noise Figure
@87MHz/5MHz
@862MHz/65MHz |
dB |
12
10 |
6
6 |
|
Distortion |
|
59PAL-D+33
digital CW |
6 CW |
5 |
C/CTB
C/XM
C/CSO |
dB
dB
dB |
71
68
70 |
78
71
73 |
6 |
|
|
|
|
|
|
Remark :
- Reverse Output Level refers to the level at the reverse output port of reverse transmitting unit.
- Recommended Output Level refers to the RF output level under the condition of 0dBmoptical receiving power and 3.6% OMI。
- Forward Amplifier Gain refers to one amplifier cascade ,if two amplifiers cascade,max gain up to 35dB。
- Forward and Reverse Amplifier Gain refers to amplifier cascade module
- Digital CW refers to 33 QAM64 in 550~750MHz,and 10dB lower than the level of analog signal CW.
- Total distortion of the optical node is also determined by the performance of the optical transmitting unit and optical receiving unit, here only RF distortion.
- Slope refers to the total slope in 5MHz to860MHz.
3. Return Transmitter
|
|
parameter |
unit |
specification |
notes |
DFB |
FP |
RF Input Level |
dBmV |
35 |
35 |
|
Output Optical
Power |
mw |
1~4 |
>1 |
|
Input Return Loss |
dB |
>16 |
>16 |
|
Flatness |
dB |
±1 |
±1 |
5~200MHz |
wavelength |
nm |
1310 |
1310 |
|
NPR |
dB |
25 |
20 |
|
OMI stability |
dB |
±1.5 |
|
connector |
|
FC/APC,SC/APC |
|
Reverse optical link parameter |
C/N |
dB |
>50 |
notes:1、3 |
>45 |
notes:2、3 |
|
CSO |
dBc |
<-51 |
<-45 |
|
CTB |
dBc |
<-55 |
notes:1、3 |
<-45 |
notes:2、3 |
|
NPR |
dBc |
41/10 |
30/15 |
4 |
Operating
Temperature |
℃ |
-20~+85 |
-20~+65 |
|
|
|
|
|
|
|
Remark:
1、Four signals test method:19,25,31,37MHz
2、Two signals test method:13,19MHz
3、Test Condition: standard optical receiver plus 5 dB optical fiber loss
4、(NPR)FP Reverse optical link parameter
Optical power:1MW optical fiber loss:fiber 12.7KM+passive attenuator
signal source:NOISE/COMNC6110
4. Optical fiber Link Performance
|
|
Parameter |
Unit |
Description(Forward) |
Notes |
C/N |
dB |
>51 |
1.2.3 |
C/CTB |
dB |
>65 |
1.2.3 |
C/CSO |
dB |
>60 |
1.2.3 |
Frequency
response |
dB |
±1.5 |
1.2.3 |
|
|
|
|
|
|
Remark:
- Connected with a standard optical transmitter, tested under an estimated link loss of a optical transmitter.
- OMI of optical transmitter is 3.6%, loaded 59 PAL-D analog TV channels within 550MHz, 3 QAM64 digital CW within 550~750MHz and its level 10dB lower than analog signal’s.
- The recommended RF output level of optical node is at 108dBμV, 10dB slope.
5. Optical AGC and temperature compensation
|
|
Parameter |
Unit |
Description(Forward) |
Notes |
Opticalt power input range |
dBm |
-6 ~ +2 |
|
RF output |
dB |
±1 |
|
temperature compensation stability |
dB |
±0.5 |
-40℃~+70 test |
|
|
|
|
|
|
6. NE Ⅱ
|
|
Parameter |
Unit |
Description |
Notes |
Receive optical power |
mW |
0-2.5 |
resolution ratio
0.1 mW |
|
Return Transmitter optical power |
mW |
0-5.0 |
resolution ratio 0.1 mW |
|
Return Transmitter current |
mA |
0-100 |
resolution ratio 1 mA |
|
Voltage 24V |
V |
0-25.5 |
resolution ratio 0.1V |
|
60V AC |
V |
0-90 |
resolution ratio 1V |
|
Temperature |
℃ |
-20-90 |
resolution ratio 1℃ |
|
|
|
|
|
|
|
7. Power supply
|
|
Parameter |
Unit |
Description |
Notes |
Voltage In |
V |
AC 50Hz 40~90V/220V |
|
Voltage Out |
V |
DC +24±0.5、+12±0.1 |
|
Current Out |
A |
+24V:1.3 Max, +12V: 1A |
|
Operating
Temperature |
℃ |
-40~+55℃ |
|
Every part Consumption |
|
Unit |
+24VDC |
+12VDC |
Notes |
RF part |
A |
0.985 |
0.0 |
|
Forward |
A |
0.23 |
0.0 |
|
Return Transmitter |
A |
0.10 |
0.0 |
|
NEⅡ |
A |
0 |
0.5 |
|
|
|
|
|
|
|
8. General
|
|
Parameter |
Unit |
Description |
Length |
mm |
284 |
Width |
mm |
216 |
Height |
mm |
110 |
Net Weight |
Kg |
3 |
Fiber Connect
Type |
|
FC/APCorSC/APC |
Operating
Temperature |
℃ |
-40 ~ +60 |
Relative Humidity |
% |
5 ~ 95 |
|
|
|
|
|
|