 |
|
|
|
|
| |
 BaalFTTx
- Series |
|
|
|
| |
|
|
| |
Fx-ES26XL
External modulated Optical CATV and
SAT-IF Transmitter 1550 nm |
|
 print pdf version |
|
| |
 |
|
| |
Application
- Electrical to optical conversion of multi-channel CATV signals like AM-VSB, FM and QAM signals
- Electrical to optical conversion of SAT-IF video signals by separate input
- Downstream transmission in HFC and RF Overlay networks with excellent performance
- Externally modulated 1550 nm DFB laser transmitter
- Enables the usage of optical amplifiers (EDFAs) as boosters or repeaters in order to realize large scale HFC networks
Features
- 2 optical outputs with > 10 dBm optical output power each
- Low noise, narrow linewidth CW DFB laser with DWDM wavelength according to ITU grid
and adjustable wavelength
- Bandwidth of 47…870 MHz for CATV and 950…2605 MHz for SAT-IF input
- Separate RF input for SAT-IF signals
- Automatic load control (ALC) for CATV signal input, separate ALC for SAT-IF signal input
- Adjustable RF slope
- Front panel CATV- and separate SAT-IF test point
- Dual, hot-pluggable power supply modules for 100...240 VAC and ±48 VDC
- Web and SNMP Interface (a-version)
- LC display and LED status indication
- General purpose I/O interface for remote functions
- Very thin, only 1 U design for mounting into 19”, ETSI or JIS racks
|
|
| |
Block Diagram |
|
| |
|
|
| |
 |
|
| |
|
|
| |
Technical
Data |
|
|
General |
Unit |
|
Optical
Connector
|
|
Any type of high return loss connectors
front or rear side mounted |
Optical
fiber
|
|
standard single mode 9/125 µm |
RF-connector |
|
F-female, front or rear side
mounted |
Control
interface
|
|
a-version: Ethernet 10/100 interface:,
b-version: RS485/232 interface |
Power
supply types
(Dual redundant, hot pluggable)
|
|
100...240 VAC, 50/60 Hz
+/- 36...+/- 72 VDC
|
(Real) Power consumption |
[W] |
< 60 / 68 (1/2 power supply unit(s) equipped |
Enlosure |
|
19” / 1 rack unit [U]
(optionally compatible to ETSI or JIS standards) |
Weight |
[kg] |
~ 9.0 (depend on power supply)
|
Safety
|
|
EN 60950, Laser class 1M according IEC 60 825-1 (eyesafe for normal viewing) |
EMC |
|
EN50083-2 |
Climatic specification
Operation
Storage
|
|
ETS 300 019, class 3.1
ETS 300 019, class 1.2
|
|
|
|
Optical
Properties |
Unit |
Fx-ES26XL-85 |
FX-ES26XL-100 |
Wavelength
|
[nm] |
1548 … 1560 nm or ITU-grid (CH23…
CH37) |
Side
mode suppression
|
[dB] |
>30 |
Wavelength
adjustment range |
[GHz] |
-100, -50, 0, 50, 100
|
Optical
power |
[dBm] |
2 x 8.5 min.
|
2 x 10.0 min, |
Relative
intensity noise
(opt. return loss > 40 dB) |
[dBc/Hz] |
<-158
typ. <–160
|
Maximum SBS suppression threshold
CATV & SAT-IF application,
25 km
CATV application, 65 km |
[dBm]
[dBm]
|
+15 *)
+19
|
Laser
linewidth (typ.)
|
[MHz] |
0.3 |
*) SBS suppression threshold should be adjusted application individually as low as possible for best signal
performance, since using +14…+15 dBm threshold may result in 2 dB penatly of CNR for carrier
frequencies 80…110 MHz and 4 dB penalty for band I (47…68 MHz) carrier frequencies.
|
|
|
| |
|
|
| |
Electrical PropertiesCATV
|
Unit |
|
|
|
RF frequency range |
[MHz] |
47 ... 862
|
Frequency response flatness |
[dB] |
< +/- 0.75
|
Nom. Input level per TV channel |
[dBµV] |
80 |
Input level range (per carrier) |
[dBµV] |
78...96 (for OMI = 5% per CATV carrier)
|
True RMS input level range
|
[dBm] |
-16...+2 (for ALC correctly working)
|
Slope range |
[dB] |
-2 (cable equivalent) ... +8 (cable equalization)
|
RF impedance |
[Ω] |
|
Return loss |
[dB] |
> 20 (@ 47 MHz) - 1.5 dB/octave, minimum 15
|
RF monitor (test point) level |
[dB] |
-20 ( -0.8...+0.2)
|
|
|
| |
|
|
| |
Electrical PropertiesSAT-IF
|
Unit |
|
|
|
RF frequency range |
[MHz] |
950...2605
|
Frequency response flatness |
[dB] |
< +/- 2
|
Input level range (per SAT-IF carrier) |
[dBµV] |
82...98 (for OMISAT = 1.0%)
|
True RMS input level range
|
[dBm] |
-11...+5 (for ALC correctly working)
|
RF impedance |
[Ω] |
|
Return loss |
[dB] |
>10
|
RF monitor (test point) level |
[dBµV] |
66 +/- 2.5 (for OMI = 1.0%)
|
|
|
| |
|
|
| |
Performance Characteristics CATV |
|
| |
| Transmitter version |
Unit |
C42 |
D84 |
N77 |
Channel
allocation plan for test |
|
CENELEC 42 |
PAL-D
84 |
NTSC
77 |
number
of TV carriers
|
|
42 |
84 |
77 |
Noise
bandwidth |
[MHz] |
5 |
5 |
4 |
CNR
Tx/Rx *)
|
[dB] |
54.5 (52.5) |
51.5 (49.5) |
53 (51) |
CNR
Link 1*) |
[dB] |
53.5 (51.5) |
50.5 (48.5) |
52 (50) |
CSO
Tx/Rx and Link 1**)
|
[dBc] |
64
|
CTB Tx/Rx and Link 1 |
[dBc] |
63
|
*) Values are valid for pure CATV application, value in backets (…) are valid for CATV & SAT-IF
application with 36 QPSK modulated SAT-IF signals with carrier frequencies in the range of
1000 … 2600 MHz
**) Optical output #1
|
|
|
| |
|
|
| |
Performance Characteristics SAT-IF |
|
| |
| |
Unit |
|
|
|
CNR *)
|
[dB] |
> 27
|
Intermoduation products
|
[dBc] |
< -35 (including intermodulation due to CATV signal!)
|
Spurious signals *) |
[dBc] |
< -38
|
*) Measurement conditions as described in table “Test Condition” under row “Tx/Rx”; moreover
36 QPSK modulated SAT-IF signals with carrier frequencies in the range of 1000 … 2600 MHz and
27 MHz IF bandwidth are used.
|
|
|
| |
|
|
| |
| Test
Conditions |
|
|
|
|
|
|
Booster EDFA 2) |
1st Fiber Length 3) |
In-Line EDFA 2) |
2nd Fiber Length 3) |
Receiver
Popt,Tx 4) |
Tx/Rx 1) |
no |
no |
no |
no |
0
dBm |
Link
1 1) |
15 dBm |
25
km |
no |
no |
0
dBm |
Transmitter mode for all tests |
ALC of both, CATV and SAT-IF input switched ON! |
|
|
| |
|
|
| |
1) RF input level at 80 dBμV per TV carrier
2) EDFA with noise figure N= 5 dB
3) Non-dispersion shifted fiber
4) Receiver Rx with equivalent input noise current density of IEQ= 7 pA/ÖHz and efficiency η = 0.95 A/W |
|
| |
|
|
| |
Ordering information |
|
|
For more information on this product please contact BKtel communications. Properties for ordering optical transmitter Fx-ES26XL
|
Optical output power
|
85
100 |
+8.5 dBm
+10.0 dBm |
Freyuency plan *)
|
C42
N77
PAL84 |
Cenelec 42
NTSC 77
PAL 84 |
NMS-Interface |
A
B |
HTTP/SNMP Ethernet
RS485 |
Wavelength
|
X
15xx.xx |
1548...1560
15xx.xx ITU wavelength
|
Optical connector |
1
2
3
4
5 |
E2000
SC/APC
FC/APC-NTT
FC/APC_JDS
SC/APC with shutter |
RF input / optical output |
F
R |
on front side
on rear side |
Version |
0
OEM |
BKtel
OEM |
Power supply
|
230/230
48/48
230
48
230/48
|
2 x (100...240 VAC)
2 x (36...72 VDC)
1 x (100...240 VDC)
1x (36...72 VDC)
mixed 230 VAC / 48 VDC |
Power Plug |
0
Eu
US
Sw
UK
Jp
Ch |
No power cable included
Europe (Germany, Spain ...)
USA
Switzerland
UK, Ireland
Japan
China |
*) Other frequency plan on request! |
|
|
| |
| Available ITU grid wavelengths |
ITU Grid Ch. No. |
DWDM Wavelength |
|
ITU Grid Ch. No. |
DWDM Wavelength |
23
|
1558.98 nm |
|
31 |
1552.52 nm |
24 |
1558.17 nm |
|
32 |
1551.72 nm |
25
|
1557.36 nm |
|
33 |
1550.92 nm |
26 |
1556.55 nm |
|
34 |
1550.12 nm |
27
|
1555.75 nm |
|
35 |
1549.32 nm |
28 |
1554.94 nm |
|
36 |
1548.51 nm |
| 29 |
1554.13 nm |
|
37 |
1547.72 nm |
30 |
1553.33 nm |
|
|
|
| Other wavelengths on request! |
|
|
|
|
|
|
BKtel communications GmbH
- www.bktel.com - E-Mail: info@bktel.com
Specifications subject to change
without notice |
|
|
|
| |
|
|
