The L-type/D-type/S-type/H-type/F-type/N-type 3998 Series
This product line is a family of state-of-the-art high performance 1550 nm externally
modulated CATV fiber optic transmitters optimized for varying network applications.
Packaged in convenient 1RU housing, this line of optical transmitters couples high optical
output powers, up to 11.0 dBm, with low optical line width resulting in unmatched
performance. The optical modulator, combined with proprietary predistortion circuitry,
provides superior CTB and CSO performance with SBS suppression levels of greater than
21 dBm. Advanced features such as built in field adjustable SBS control and electronic
dispersion compensation allow these transmitters to be quickly optimized in the field for any
link or application without the need to procure specifically tuned transmitters. This affords
the system designer a level of flexibility previously unknown in the CATV market place.
The L-type series are designed as a high performance solution for applications where the
simultaneous transport of CATV and SAT-IF FM signals is required. The SAT-IF signals
can be applied anywhere in the 950 to 2800 MHz band.
The D-type series are designed as a low cost, high performance solution for applications
where the required fiber length is in the range of 20 to 50 kilometers. Advanced, high
power, DFB laser technology allows these transmitters to be fielded without the use of
EDFAs.
The S-type series transmitters are designed to be the most versatile model within the 3998
series family. They can easily be configured to meet most HFC network solutions requiring
link lengths in the range of 50 to 70 kilometers with one EDFA as well as links utilizing
multiple EDFA’s.
The H-type series transmitters are optimized for single EDFA fiber links in the 70 to 90
kilometer range. These transmitters take advantage of our advanced fiber dispersion
compensation circuitry to provide exceptional CATV performance.
The F-type series transmitters are intended for use in FTTx and RFoG architecture designs
requiring high quality transmission over varying transmission lengths and EDFA output
powers. These transmitters successfully support very high optical launch powers while
controlling the detrimental effects of Stimulated Brillouin Scattering (SBS), group velocity
dispersion (GVD), and self phase modulation (SPM).
The N-type series transmitters are intended for use in node-splitting architecture designs
requiring cost effective DWDM transmission over medium length fiber distances.
Applications
High Performance Supertrunking Links
High Power Distribution Networks
Redundant Ring Architectures
FTTx Networks
RFOG Applications
SAT-IF Transport
DWDM Node Splitting
Features
Single or Dual Optical Outputs
QAM Loading to 1003 MHz
Dual Power Supplies and Fans,
Redundant & Hot Swapplable
Front Panel RF Test Point
SNMP Control Interface
WEB GUI
Vacuum Fluorescent Status Display
OMI / RF Gain Adjustment
AGC Select: CW, Video, Manual (No
AGC)
Industry Leading Field Adjustable SBS
Suppression
Field Adjustable Electronic Dispersion
Compensation (EDC)
| REV 2012.08
Information contained herein is deemed reliable and accurate as of the issue date. EMCORE reserves the right to change the design or specification at any time without notice.
3998 Series 1550 nm
Externally Modulated Transmitter
DATASHEET | AUGUST 2012
FIBER OPTICS
Optical / Electrical Characteristics
L-type
Property
Performance (note 1-8)
Specified Link Length
Channel Plan
Optical Output Power
Noise Bandwidth
SBS Suppression
CATV Carrier to Noise Ratio
CATV Composite Second Order
CATV Composite Triple Beat
CATV Composite Triple Beat
SAT-IF Carrier to Noise Ratio
SAT-IF Intermodulation Products
SAT-IF Spurious Products
Po (dBm)
BW (MHz)
(dBm)
CNR (dB)
CSO (dBc)
CTB (dBc)
CTB (dBc)
CNR (dB)
(dBc)
(dBc)
Units
3998-L01
L (km)
25
NTSC 80-Ch
8.5/8.5
4
15.0
51.0
-65
-65
-64
27
-35
-38
Models
3998-L02
3998-L03
25
PAL 60-Ch
8.5/8.5
5
15.0
51.0
-65
-65
-64
27
-35
-38
25
NTSC 110-ch
8.5/8.5
4
15.0
49.5
-65
-65
-64
27
-35
-38
Comments
3998-L04
25
PAL 89-Ch
8.5/8.5
5
15.0
49.5
-65
-65
-64
27
-35
-38
Min.
Min.
Max. Port 1
Max. @ +25C
Max. @ 0 C to 50 C
Min.
Max. Port 1
Max.
o
o
With 36 QPSK carriers
from 950 to 2800 MHz
Min. 10 dBm version
avail. See Chart
D-type
Property
Performance (note 1-7)
Specified Link Length
Channel Plan
Optical Output Power
Noise Bandwidth
SBS Suppression
Carrier to Noise Ratio
Composite Second Order
Composite Triple Beat
Composite Triple Beat
Po (dBm)
BW (MHz)
(dBm)
CNR (dB)
CSO (dBc)
CTB (dBc)
CTB (dBc)
Units
3998-D01
L (km)
40
NTSC 80-Ch
11.0
4
> 12.0
54.0
-65
-65
-64
Models
3998-D02
3998-D03
40
PAL 60-Ch
11.0
5
>12.0
54.0
-65
-65
-64
40
NTSC 110-ch
11.0
4
>12.0
51.0
-65
-65
-64
Comments
3998-D04
40
PAL 89-Ch
11.0
5
>12.0
51.0
-65
-65
-64
Min.
Min.
Max.
Max. @ +25C
Max. @ 0 C to 50 C
o
o
Min.
S-type
Property
Performance
(Note 1-7)
Specified Link Length
Channel Plan
Optical Output Power
Noise Bandwidth
SBS Suppression
Carrier to Noise Ratio
Composite Second
Order
Composite Triple Beat
Composite Triple Beat
Po (dBm)
BW (MHz)
(dBm)
CNR (dB)
CSO (dBc)
CTB (dBc)
CTB (dBc)
Units
3998-SA1
L (km)
65
NTSC 80
7.0/ 7.0
4
16.0
53.0/ 53.0
-65/ -65
-65
-64
3998-SA2
65
PAL 60
7.0/ 7.0
5
16.0
53.0/ 53.0
-65/ -65
-65
-64
Models
3998-SA3
65
NTSC 110
7.0/ 7.0
4
16.0
50.0/ 50.0
-65/ -65
-65
-64
Comments
3998-SA4
65
PAL 89
7.0/ 7.0
5
16.0
50.0/ 50.0
-65/ -65
-65
-64
3998-SA5
65
42
CENELEC
7.0/ 7.0
5
16.0
53.0/ 53.0
-65/ -65
-65
-64
Min.
Min.
Max.
Max. @ +25C
Max. @ 0 C to 50 C
o
o
Min. - Higher Powers
Available See Chart
| REV 2012.08
Information contained herein is deemed reliable and accurate as of the issue date. EMCORE reserves the right to change the design or specification at any time without notice.
3998 Series 1550 nm
Externally Modulated Transmitter
DATASHEET | AUGUST 2012
FIBER OPTICS
H-type
Property
Performance (Note 1-7)
Specified Link Length
Channel Plan
Optical Output Power
Noise Bandwidth
SBS Suppression
Carrier to Noise Ratio
Composite Second Order
Composite Triple Beat
Composite Triple Beat
Po (dBm)
BW (MHz)
(dBm)
CNR (dB)
CSO (dBc)
CTB (dBc)
CTB (dBc)
Units
L (km)
Models
3998-H01
3998-H02
80
NTSC 80-Ch
7.0/ 7.0
4
18.0
52.0/ 52.0
-65/ -65
-65
-64
80
PAL 60-Ch
7.0/ 7.0
5
18.0
52.0/ 52.0
-65/ -65
-65
-64
Comments
Min.
Min.
Min.
Max.
Max. @ +25C
Max. @ 0 C to 50 C
o
o
F-type
Property
Performance (Note 1-7)
Specified Link Length
Channel Plan
Optical Output Power
Noise Bandwidth
SBS Suppression
Carrier to Noise Ratio
Composite Second Order
Composite Triple Beat
Po (dBm)
BW (MHz)
(dBm)
CNR (dB)
CSO (dBc)
CTB (dBc)
Units
3998-F01
L (km)
20
NTSC 80-Ch
7.0/ 7.0
4
21.0
48.0
-58
-58
Models
3998-F02
3998-F03
20
PAL 60-Ch
7.0/ 7.0
5
21.0
48.0
-58
-58
20
NTSC 110-ch
7.0/ 7.0
4
21.0
45.0
-58
-58
Comments
3998-F04
20
PAL 89-Ch
7.0/ 7.0
5
21.0
45.0
-58
-58
Min.
Min.
Max.
Max.
Min.
N-type
Property
Performance (Note 1-7)
Specified Link Length
Channel Plan
Optical Output Power
Noise Bandwidth
SBS Suppression
Carrier to Noise Ratio
Composite Second Order
Composite Triple Beat
Composite Triple Beat
Po (dBm)
BW (MHz)
(dBm)
CNR (dB)
CSO (dBc)
CTB (dBc)
CTB (dBc)
Units
L (km)
Models
3998-N01
3998-N02
40
NTSC 80-Ch
9.5
4
13.0
52.0
-62
-62
-61
40
PAL 60-Ch
9.5
5
13.0
52.0
-62
-62
-61
Comments
Min.
Min.
Min.
Max.
Max. @ +25C
Max. @ 0 C to 50 C
o
o
Notes:
1. Unless stated otherwise all specifications apply over full temperature range with no digital loading.
2. Unless stated otherwise specifications apply for nominal RF input level as defined below, after a 30 minute stabilization
period.
3. Specifications separated by a slash are port1 / port 2.
4. Units are tested per the Test / Link Configuration Table
5. Noise figure for the EDFA = 4.5 ~ 5.5 dB
6. Corning SMF-28 single mode fiber
7. Receiver responsivity is 0.95 mA/mW, Equivalent noise current is 7 pA/(Hz)1/2General and Mechanical Specifications
8. With 36 QPSK modulated SAT-IF signals between 950 --- 2800 MHz, 27 MHz IF bandwidth.
| REV 2012.08
Information contained herein is deemed reliable and accurate as of the issue date. EMCORE reserves the right to change the design or specification at any time without notice.
3998 Series 1550 nm
Externally Modulated Transmitter
DATASHEET | AUGUST 2012
FIBER OPTICS
General and Mechanical Specifications
Property
Wavelength
Channel Plan
Optical Connector
Monitoring Interfaces
Operating Temperature
Storage Temperature
Power Consumption
1555 +/-5 nm
Various – See Specification Tables
SC/APC
100 Base-T Ethernet (SNMP)
Rear Panel RS-232 interface
VFD Screen Front Panel Controls
0C to 50C
-20C to 70C
65W max
EMI:
EN50083-2:2006 (US CATV)
EN55022:2006 (US IT)
EN61000-3-2 (Harmonics)
EN61000-3-3 (Flicker)
FCC: Part 15, Subpart B, class “A” Unintentional
Radiators
ICES-003 (Canada)
AN/NZS 3548, Class A (Australia)
VCCI, Class A (Japan)
GR-2853-CORE
GR-2853-CORE
20% to 85%
(VAC)
(VDC)
Dimensions
Input Power Range
90 to 265 VAC, 50/60 Hz
+/- (36 – 72) VDC
19.0”W x 15.0”D x 1.72”H
17 +/-1 dBmV/ch 80 NTSC channels
15 +/-1 dBmV/ch 110 NTSC channels
18 +/-1 dBmV/ch 60 PAL channels
20 +/-1 dBmV/ch 42 CENELEC channels
16 +/-1 dBmV/ch 89 PAL channels
27 +/-1 dBmV/ch SAT-IF channels
Input Power Range
19 +/-2 dBmV/ch 80 NTSC channels
17 +/-2 dBmV/ch 110 NTSC channels
20 +/-2 dBmV/ch 60 PAL channels
18 +/-2 dBmV/ch 89 PAL channels
22 +/-2 dBmV/ch 42 CENELEC channels
29 +/-2 dBmV/ch SAT-IF channels
(width includes 19” front panel ears, depth
includes, connectors, fans & front panel) – see
drawing
Manual mode
Manual mode
Manual mode
Manual mode
Manual mode
Manual mode
CW mode
CW mode
CW mode
CW mode
CW mode
AGC mode
Requirement
Comments
Various Options + ITU-grid available – see
Model Number Information
Custom channel plans available
Other styles available
VFD- (Vacuum Fluorescent Display)
Agency Listings
Safety:
FDA/CDRH Laser Safety Governed by Code
of Federal Regulations Title 21, Volume 8,
Part 1040
IEC 60950-1
IEC 60728-11
Laser IEC 60825-1
CB Certification
In Shipping package
In Shipping package
Non-condensing
Transportation Vibration
Transportation Shock
Operating Humidity
Supply Range
| REV 2012.08
Information contained herein is deemed reliable and accurate as of the issue date. EMCORE reserves the right to change the design or specification at any time without notice.
3998 Series 1550 nm
Externally Modulated Transmitter
DATASHEET | AUGUST 2012
FIBER OPTICS
General and Mechanical Specifications
(continued)
Property
Front Panel RF Gain / OMI
Adjustment Range
CATV Frequency Range
CATV Flatness
CATV Flatness – N-Type
CATV Input impedance
CATV Input Return Loss
CATV Front Panel RF Tap
CATV Front Panel RF Tap Flatness
SAT-IF Frequency Range
SAT-IF Flatness
SAT-IF Input impedance
SAT-IF Input Return Loss
SAT-IF Front Panel RF Tap
SAT-IF Front Panel RF Tap Flatness
Requirement
+2 / -4 dB from nominal setting
Comments
CATV Performance can vary slightly
45MHz – 1003 MHz
+/- 0.50 dB
+/- 0.75 dB
+/- 0.75 dB
75
16dB min
-20 +/- 1 dB down from RF input
+/- 1 dB
950MHz – 2800 MHz
+/- 2 dB
75
10dB min
7 +/- 2.5 dBmV/Ch at 1% OMI/ch
+/- 1 dB
950MHz – 2800 MHz
950MHz – 2800 MHz
45MHz – 1003 MHz
45MHz – 1003 MHz
45MHz - 550MHz
45MHz – 1003 MHz
45MHz – 1003 MHz N-Type
Test/Link Configuration
Property
L-Type
D-Type
S-Type
H-Type
F-Type
N-Type
15 dBm
None
16 dBm
18 dBm
21 dBm
13 dBm
EDFA
25 Km
40 Km
65 Km
80 Km
20 Km
40 Km
Link
1
Received Power
2
0.0 dBm at the receiver
0.0 dBm at the receiver
0.0 dBm at the receiver
0.0 dBm at the receiver
-5.5 dBm at the receiver
0.0 dBm at the receiver
| REV 2012.08
Information contained herein is deemed reliable and accurate as of the issue date. EMCORE reserves the right to change the design or specification at any time without notice.
[i=s] This post was last edited by dontium on 2015-1-23 12:52 [/i] How many times should a general-purpose single-stage operational amplifier be amplified (assuming the performance of the operational ...
WiFi Repeater/WiFi repeater is a hot product in the current WiFi wireless network;WiFi Repeater/WiFi relay consumer groups:It was born out of people's reliance on wireless network applications;●For so...
Electric vehicle controller - vehicle controller The development of vehicle controller (electric vehicle controller) includes software and hardware design. The core software is generally developed b...
[font=微软雅黑][size=5][color=Blue]Have you noticed such a great prize? [/color][/size][/font] [font=微软雅黑][size=5]Two easy steps: Step 1: [/size][/font][font=微软雅黑][size=5][url=https://www.eeworld.com.cn/h...
The wireless part of CC1352 is handled by an ARM Cortex-m0 CPU, so how do it and the main CPU use on-chip resources and work together? The SDK does not contain any code related to the Cortex-m0 CPU, ...
Flip-chip and ball grid array (BGA) are two widely used packaging technologies in the electronics industry. Each has its own advantages and limitations, and in some cases, they can complement each ...[Details]
Current Development Status of DVR Market
A DVR, or digital video recorder, uses a hard disk for recording, unlike traditional analog video recorders. It's often called a DVR because it's a com...[Details]
Amidst the wave of intelligent automotive transformation, advanced driver assistance is gradually emerging from cutting-edge technology into the mainstream, becoming a new frontier of industry comp...[Details]
According to foreign media reports, BMW has just been granted a patent for a screen that could cover the entire roof. BMW hopes to transform at least a portion of the vehicle's headliner into a dis...[Details]
Charging is a familiar process for new energy vehicles, and as a source of battery energy, charging piles are crucial. New energy vehicle charging can be divided into fast charging and slow chargin...[Details]
During daily operation of an R-type power transformer, the voltage used varies as the equipment being used adjusts. This raises the question: can the transformer change voltage at this point? The a...[Details]
Civilian internal combustion engines operate in the range of approximately 1000-4000 rpm. This results in the engine's kinetic energy being ineffective at low or high rpm, making starting difficult...[Details]
New version helps developers build secure and trustworthy embedded systems
Shanghai, China—August 21, 2025—
QNX, a division of BlackBerry Ltd., today announced the release of QNX...[Details]
1. Introduction
In 2015, Apple's new MacBook and Apple Watch both featured force-sensing technology, which Apple calls Force Touch. Each time a user presses the touchpad, the device not only p...[Details]
On August 20, Huawei Device announced that the all-new M7 is the first to feature an in-cabin laser vision solution. This solution offers enhanced active safety capabilities compared to primary vis...[Details]
0 Introduction
With a rapidly aging population, a young couple is now required to care for an increasing number of elderly people, leading to a growing difficulty in providing care for them. E...[Details]
Renesas Electronics introduces a new USB-C power solution with an innovative three-level topology.
Improve performance while reducing system size
New solution combines excel...[Details]
We know that the power output by the engine does not directly act on the wheels to drive the car, but needs to pass through a series of power transmission mechanisms. So how is the power transmitte...[Details]
According to the latest financial report data, thanks to its leading position in advanced technology, TSMC's profit performance in the second quarter of 2025 was extremely impressive, with net prof...[Details]
Anyone who has driven a pure electric vehicle will find that it starts much faster than a fuel vehicle. So why do pure electric vehicles start so quickly?
We all know that an engine's to...[Details]
Analogue and Mixed Signal
京公网安备 11010802033920号
EEWORLD
