Basic Info.
Model NO.
SN-M831, SDM-861, SHPS8502
Type
Radio Signal Modulation
Function
Signal Transmission Equipment
Product Description
DVB-T/T2 Modulator
Model: SHPS8502
Introduction
SHPS8502 DVB-T/T2 modulator is our new product developed complying with the DVB-T2 standard. With its advanced modulating technology, this modulator can effectively make use of the ground spectrum resources and make it possible to provide reliable signals for fixed, mobile and portable devices. Compared with DVB-T, the channel capacity is increased by 50% under the similar carrier to noise ratio (CNR) threshold. SHPS8502 DVB-T2 modulator also supports single-PLP and MI (T2-MI) interface, and can receive transmission data and synchronous information from DVB-T/T2 Gateway through its ASI and IP ports.
Moreover, this device can be upgraded and controlled through network system, which allows it to be widely used in setting up digital broadcasting network and provide good signals for scientific laboratory and DVB-T/T2 STB.
Feature
Fully complying with EN302 755 standard4 ASI inputs, 10MHz input/loop out, 1PPS input/loop out, and IP inputSupports single PLP inputSupport MISO and SISOSupport QPSK/16QAM/64QAM/256QAM (normal or rotated)Support TS format: T2-MI or MPEG-TS (Mode A)High performance output: MER>43dB, shoulder level>56dBOutput signal bandwidth: 5M, 6M, 7M, 8MHzSupport MFN and SFN net mode DVB-T and DVB-T2 modulation mode switchableRF frequency range: 30MHz~999MHzRF output level: -25~+3 dBm, 0.1db steppingSupports non-linear and linear digital pre-distortion (DPD)Constant temperature crystal oscillator, as high as 0.1ppm stabilitySupport online upgradeKeyboard operation and LCD displayNetwork management system
Specification
Input | T2MI input over ASI and IP |
MPEG-2/MPEG-4 TS input over ASI |
10MHz reference clock input and loop out, BNC interface |
1PPS input and loop out, BNC interface |
Modulation | Standard | EN302 755 |
Mode | Mode A (single-PLP) |
PLP Constellation | QPSK, 16QAM, 64QAM, 256QAM (Normal or Rotated) |
L1 Post Constellations | BPSK, QPSK, 16QAM, 64QAM |
FEC Length | Short(16K), Normal (64K) |
FEC Rate | 1/2, 3/5, 2/3, 3/4, 4/5, 5/6 |
Pilot Pattern | PP1 - PP8 |
Guard Interval | 1/128, 1/32, 1/16, 19/256, 1/8, 19/128, 1/4 |
FFT Mode | 1k, 2k, 4k, 8k, 16k, 32k, 8k-ext, 16k-ext, 32k-ext |
Bandwidth | 5MHz, 6MHz, 7MHz, 8MHz |
Net Mode | MFN, SFN |
RF Out | Connector | N Type, 50ΩImpedance |
RF range | 30~960Mhz, 1hz stepping |
Output level ATT | -17~+0dbm, 0.1db stepping |
MER | > 43db |
Shoulder Level | >56dB |
System | LCD display, keyboard and Network management |
Supporting software upgrading through network |
General | Demission (W*L*H) | 482mm×410mm×44mm |
Weight | 4.8kg |
Temperature | 0~45ºC(operation),-20~80ºC(storage) |
Power supply | AC 220V±10%,50/60Hz |
Power Consumption | 34W |
Professional Agile Audio & Video Demodulator SDM-861
Feature:
* CATV Agile Demodulator, is applicable for TV signal ranged from 47~860 MHz.
* The equipment use I2C Fieldbus Control technology to demodulate TV signals of different frequency.
* Twodigit LED display indicates the receiving channel.
* Decoded audio and video signal could be transmitted to modulator and other equipments.
Specification:
RF IN |
Input frequency | 45…870 MHz |
Nominal input level | 65-85 dBμV |
Input impedance | 75Ω |
Noise figure | 10dB |
Frequency Fine Tuning Range | ±4MHz |
Frequency Fine Tuning Step | 250KHz |
VIDEO OUT |
Output level | 0.7…1.4 VPP Adjustable |
Output impedance | 75Ω |
S/N Ratio | 45(Typ.) |
Frequency Response | ±2dB |
Differential gain | ≤5% |
Differential phase | ≤5 o |
AUDIO OUT |
Output level | 0.65±0.15 Vrms |
Output impedance (unbalance) | 600Ω |
S/N Ratio | 55dB(Typ.) |
Distortion Ratio | ≤1.5%(50Hz-15KHz) |
Frequency Response | ≤2dB |
GENERAL |
Supply voltage | AC180…250V |
Consumption | ≤5W |
Operating temperature | -10 … +55ºC |
Video,audio connector type | "RCA" |
RF connector type | "F" |
Outside dimensions(h×w×d) | 483×210×44mm |
Packed weight | 2.5kg |
AGILE TV MODULATOR
SN-M831
Features
• Base-band video and audio input.
• All channels between 48 to 862 MHz Agile controlled by advanced Micro-processor.
• Double heterodyne conversion, Triple IF SAW filter. High vestigial sideband selectivity.
• Output TV channel frequency through ternary VCO - PLL synthesis.
• Full + 55dBmV min. output.
• Adjustable A/V level,RF output level,video and audio modulation index, controlled by advanced Micro-processor.
• Adopt high quality SMPS to ensure power supply with wide range input.
• Front panel LCD display, -20dB test point, IF loop-through capability.
Specifications
Video section Input level: 0.7 - 1.4Vpp Input impedance: 75Ω Input return loss: ≥ 20dB Modulation depth: 87.5% In-band Flatness: ≤ ±1.0dB (10Hz ~ 5MHz) Differential gain: ≤ 4% Differential phase: ≤ 4o Cr/L - Group delay: ≤ ± 50ns Weighted S/N ratio: ≥ 60dB | Audio section Input level: 0.775Vp-p ± 10dB Input impedance (unbalance): 10kΩ Adjustable peak deviation: ±50kHz Pre-emphasis: 50µs Flatness (40Hz ~ 15KHz): ≤ ±1.5dB Distortion (fm = 1KHz, Δf = 50KHz): ≤ 1% S/N ratio: ≥ 60dB |
RF section Output frequency: 48 ~ 862MHz Agile Nominal output level: ≥ 55dBmV Impedance: 75Ω A/V ratio: -10 ~ -20dB Carrier frequency tolerance: ≤ ±5kHz Spurious: ≤ -60dB Output level adjustment: 0 ~ -20dB Side-band suppression: ≥ 65dB In-channel C/N ratio : ≥ 60dB Out-of-channel C/N ratio : ≥ 65dB | IF section Video carrier frequency: 38.9 (B-G), 38 (D-K) Audio carrier frequency: 33.4 (B-G), 31.5 (D-K) Video carrier output level: ≥ 30dBmV Audio carrier output level: ≥ 20dBmV Input/output IF impedance: 75Ω Input/output IF return loss: ≥12dB |
General
Supply voltage: AC100 ~ 250V, 50 ~ 60Hz
Consumption: 20W
Operating temperature:-10 ~ +40oC Video, audio connector: RCA
IF and RF connector type: F
Packed weight: 3kg
Dimension: 482 x 260 x 44mm
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.