Basic Info.
Function
Signal Transmitting Device, Signal Transmission Equipment, Signal Monitoring Equipment
Specification
Power amplifier
Product Description
870MHz 2-Way Amplifier (Big Housing and Four Amplification Modules)
MODEL: SFD-8734S2K6D4
Features:
* Forward path 1 * 870 MHz GaAs or GaN Push-Pull Hybrid Amp and 2 * 870 MHz GaAs or GaN Power-Doubler Hybrid Amp Modules. Return path 1* Reverse Hybrid Amp. Module. Module has brand name from G7/EU countries All modules have brand name from G7/EU countries
* High quality aluminum-alloy die-cast housing with passivation surface, beautiful and firm, corrosion prevention.
* Waterproof design, lightning proof structure and rainproof connection, fit for outdoor use.
* -20dB independent input and output test ports are set inside (outside optional) the product for the forward and return path.
* Modularized plug-in diplex filter, equalizer and attenuator, easy to choose or upgrade according to user's requirement.
* Independent installation design for the power supply, 60 VAC (220VAC optional).
* Apply to trunk and branch line in two way CATV system, to compensate the attenuation of branch lines.
Specification:
| ITEMS | FORWARD PATH | RETURN PATH |
| Frequency Range | 82 ~ 870 MHz, or higher | 5 ~ 65 MHz |
| Operating Gain (Includes DPXs, EQs, AGC …) | ≥ 34 dB, full range | ≥ 17 dB, full range |
| Response Flatness | ≤ ± 0.75 dB |
| Gain Control Range | 0 ~ 20dB Adj. / plug-in PAD | 0 ~ 20dB Adj./ plug-in PAD |
Slope Control Range
(Fixed value, Plug-in modules) | 3 ~ 12dB, | 3 ~ 9dB, |
| Noise Figure | ≤ 9 dB | ≤ 9 dB |
| Return Loss (75-ohm Reference) | ≥ 12 dB, full range |
| Recommended Output Levels | ≥ 38 / 50 dBmV (82 / 870 MHz) | ≥ 42 / 42 dBmV (5 / 65 MHz) |
| Rated Signal Level Distortion (*) | |
| Cross Modulation (XMOD) | ≤ - 60 dB | ≤ - 60 dB |
| Composite Second Order (CSO) | ≤ - 63 dB | ≤ - 63 dB |
| Composite Triple Beat (CTB) | ≤ - 63 dB | ≤ - 63 dB |
| Input / Output Impedances | 75 ohms, 5/8-24 Female |
| Hum Modulation | ≥ 65 dB @ 10A passing current |
| Power Requirements | 40 ~ 90 VAC / 50 ~ 60 Hz, or larger |
| Internal Circuit Voltage | 24 ± 0.3 VDC (high efficient switchmode power supply), withstand ≥1.8A Load. Overload, overvoltage, short circuit protection. |
Housing Design
| Die-cast aluminium housing design with paint/coating for:
- Good heat spread (Operating Temp.: 0 ~ +60oC, or wider).
- RF shielding ≥ 110 dB.
- IP67 degree of dust and water protection.
- For strand and pedestal mounting. |
NOTE:
-Measured with 132 NTSC (or 96 PAL) channels of Forward Path, at least 4 T-channels of Return Path, at Recommended Output Levels.
- Support Adj. Attenuator / plug-in Attenuator (PAD), plug-in DPX, and plug-in EQ between hybrid modules.
- Support Forward IN and OUT Test Ports (-20 dB), Return IN and OUT Test ports (-20 dB).
- Return Attenuator and EQ are designed / located at OUTPUT of Return Amp. Module.
- Lightning Arrestors at all IN/OUT Ports
1GHz Two way amplifier (Big housing and four modules)
SFD-1G34S2K6G4
Feature:
* Aluminium die casting housing, plug-in shielded frame ,surface by powder coating, beautiful and firm, corrosion prevention.
* Waterproof design, lightning proof circuits, rainproof connectors, fit for outdoor use.
* Double power output with high electric level.
* Forward and return circuits adopt amply modules which are from NXP or China;advanced technics and reliable performance.
* -20dB independent input and output test ports are set inside (outside optional) the product for the forward and return path.
* On board plug-in diplex filter, adjustable attenuators (or plug-in pads), and plug-in equalizers easy to choose or upgrad
* Independent power supply installation with for 60VAC or 220VAC.
* The housing with plug-in shielded frame ,easy to repair and upgrade.
* Apply to trunk and branch line in two way CATV system,to compensate the attenuation of branch lines.
Specification:
| NO | Parameters | Specification |
| 1 | RF PERFORMANCE - Forward |
| 1.1 | Passband Frequency | 82 to 1000 MHz |
| 1.2 | Operation Gain | 38dB |
| 1.3 | Noise Figure | <8dB |
| 1.4 | Interstage Slope | 13.5dB |
| 1.5 | Test Point (all) | -20dB +/- 1dB |
| 1.6 | Test Point Return Loss | ≤-16dB |
| 1.7 | Output Level(s) | 42dBmV min. @ 82 MHz and
54dBmV min. @ 1000 MHz |
| 1.8 | Channel Loading | 75 NTSC Analog + 75 digital |
| 1.9 | C/CTB | ≤-65dB |
| 1.10 | C/CSO | ≤-65dB |
| 1.11 | XMOD | ≤-65dB |
| 1.2 | Flatness | +/- 0.75 |
| 1.13 | Return Loss | ≤-16dB |
| 2 | RF PERFORMANCE - Reverse |
| 2.1 | Passband Frequency | 5 to 65 MHz |
| 2.2 | Gain | 20dB |
| 2.3 | Test Point (all) | -20dB +/- 1dB |
| 2.4 | Test Point Return Loss | ≤-16dB |
| 2.5 | Noise Figure | 6dB |
| 2.6 | Output Level | 40 dBmV |
| 2.7 | Channel Loading | 4 - 6 PAL analog channels |
| 2.8 | XMOD | ≤-65dBc |
| 2.9 | C/CTB | ≤-75dBc |
| 2.10 | C/CSO | ≤-75dBc |
| 2.11 | Flatness | ± 0.75 dB |
| 2.12 | Return Loss | ≤-16dB |
| 3 | General |
| 3.1 | Operating Temperature Range | -40 to + 70°C |
| 3.2 | Power | 30 to 100VAC |
| 3.3 | Power supply | 60VAC,1.8A |
| 3.4 | DC Ripple | <15 p-p mV |
| 3.5 | Power Consumption | 31W |
| 3.6 | Hum | ≤-60dBc |
| 3.7 | AC Bypass Current | 10A |
1GHz Two way amplifier (Big housing and three modules)
SFD-1G38S2K6F3
Feature:
* Aluminium die casting housing, plug-in shielded frame ,surface by powder coating, beautiful and firm, corrosion prevention.
* Waterproof design, lightning proof circuits, rainproof connectors, fit for outdoor use.
* Double power output with high electric level.
* Forward and return circuits adopt amply modules which are from NXP or China;advanced technics and reliable performance.
* -20dB independent input and output test ports are set inside (outside optional) the product for the forward and return path.
* On board plug-in diplex filter, adjustable attenuators (or plug-in pads), and plug-in equalizers easy to choose or upgrad
* Independent power supply installation with for 60VAC or 220VAC.
* The housing with plug-in shielded frame ,easy to repair and upgrade.
* Apply to trunk and branch line in two way CATV system,to compensate the attenuation of branch lines.
Specification:
| NO. | Parameters | Specification |
| 1 | RF PERFORMANCE - Forward |
| 1.1 | Passband Frequency | 82 to 1000 MHz |
| 1.2 | Operation Gain | 38 dB |
| 1.3 | Noise Figure | <8dB |
| 1.4 | Interstage Slope | 13.5dB |
| 1.5 | Test Point (all) | -20dB +/- 1dB |
| 1.6 | Test Point Return Loss | ≤-10dB |
| 1.7 | Output Level(s) | 38.5 dBmVmin@82MHZ 52dBmVmin@1000MHZ |
| 1.8 | Channel Loading | 75 NTSC Analog + 75 digital |
| 1.9 | C/CTB | ≤-65dB |
| 1.10 | C/CSO | ≤-65dB |
| 1.11 | XMOD | ≤-65dB |
| 1.12 | Flatness | +/- 0.75 |
| 1.13 | Return Loss | ≤-16dB |
| 2 | RF PERFORMANCE - Reverse |
| 2.1 | Passband Frequency | 5 to 65 MHz |
| 2.2 | Gain | 20dB |
| 2.3 | Test Point (all) | -20dB +/- 1dB |
| 2.4 | Test Point Return Loss | ≤-10dB |
| 2.5 | Noise Figure | ≤ 6dB |
| 2.6 | Output Level | 40 dBmV |
| 2.7 | Channel Loading | 4 - 6 PAL analog channels |
| 2.8 | XMOD | ≤-65dB |
| 2.9 | C/CTB | ≤-75dB |
| 2.10 | C/CSO | ≤-75dB |
| 2.11 | Flatness | ± 0.75dB |
| 2.12 | Return Loss | ≤-16dB |
| 3 | General |
| 3.1 | Operating Temperature Range | -40 to + 70°C |
| 3.2 | Power | 30 to 100VAC |
| 3.3 | Power supply | 60VAC,1.8A |
| 3.4 | DC Ripple | <15 p-p mV |
| 3.5 | Power Consumption | 31W |
| 3.6 | Hum | ≤-60dB |
| 3.7 | AC Bypass Current | 10A |
Headend RF Amplifier in 1U standard chassis
SQFD-8732D2K2-1U-2B or SQFD-1G32D2K2-1U-2B
Feature:
* Suitable for RF signal amplifying in the headend or branch headend in the CATV network system.
* 19 inch/1U standard chassis, RF output test port at the back board,easy to test inspection.
* With plastic coated surface, fine silk-screen printing.
* Frequency range: 40-862MHz. /1000MHz
* Imported independent power module, advanced technology and reliable performance.
* Adjustable attenuation for 20dB at one time, easy and simple for adjusting.
* High quality switching power supply with AC220V.
Specification:
| NO. | ITEM | Unit | Specification |
| 1 | Frequency range | MHz | 45~870 MHz/1000MHz |
| 2 | Return loss | dB | ≥16 |
| 3 | Nominal output RF signal level | dBμv | ≥104 (75 Ω ) |
| 4 | Frequency response | dB | ±0.8 |
| 5 | Gain | dB | 32 |
| 6 | Gain adjustable range | dB | 0~20 |
| 7 | Slope adjustable range | dB | Plug-in 0dB EQ(3/6/9dB optiona)l |
| 8 | Max noise figure(NF) | dB | ≤8 |
| 9 | coupler input testpoint | dB | 20 |
| 10 | coupler output testpoin | dB | 20 |
| 11 | Cross Modulation (XMOD) | | ≥ 63 |
| 12 | CTB | dB | ≥ 63 |
| 13 | CSO | dB | ≥ 63 |
| 14 | Hum Modulation | dB | 65dB min. |
| 15 | Group delay | ns | ≤5(112.25MHz/116.68 MHz ) |
| 16 | Distortion | | Measured with 132 NTSC/98 PAL channels at 44dBmV output, flat |
| 17 | Outside Dimensions(W×H×L) | mm | 483*229*45 |
| 18 | Power consumption | w | 15 |
| 19 | Power voltage | V | AC 100-240V (50-60Hz) |
| 20 | Working temp. range | ºC | 0ºC~ +50ºC |
| 21 | Weight | kg | 3 |
Address:
The 4th F, Bldg1, No. 12-1 Xiantian Road, Xinsheng Community,
Longgang Subdistrict, Longgang District, Shenzhen City, Shenzhen, Guangdong, China
Business Type:
Manufacturer/Factory, Trading Company
Business Range:
Consumer Electronics, Electrical & Electronics, Industrial Equipment & Components, Manufacturing & Processing Machinery, Tools & Hardware
Management System Certification:
ISO 9001
Company Introduction:
SEEHAI ELECTRON Co., Ltd was founded in 2001, is a productive enterprise of independent development, design, production and sales. We are specialized in communication equipment manufacturing especially for the equipment of CATV transmission system and the related accessories. SEEHAI possesses advanced production and testing equipment, including all kinds of metal processing equipment and professional testing instruments which are famous brands around the world, such as HP and Agilent Network Analyzer, Spectrum Analyzer, etc.
SEEHAI has a full set of mold for all series of metals, plastic, PCB and so on, which are used for SEEHAI brand products with distinct personality, rational structure and stable quality.
SEEHAI have certified by ISO9001: 2008 Quality Management System Authentication, all the products are with SEEHAI patent.
The registered trademark of SEEHAI is "SEEHAI".
SEEHAI adhere to the service tenet of "Quality first", wholeheartedly provide high quality service for customers.
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