Radio altimeter test set is portable, inexpensive An inexpensive universal test set for 4.3-GHz FMCW- and pulse-radio altimeters, the ALT-8000 RF-based portable radio altimeter test set is said to be the first of its kind. Designed for Flightline testing of aircraft and UAVs, it has a 12-in. color touchscreen to ease operation.

The radio altimeter test set system can be coupled to the altimeter directly through the latter’s Tx/Rx ports or by using the supplied antenna couplers, which accommodate most aircraft. RF looped tests verify Tx frequency, power, and sweep rate, while the RF-level control permits testing UUT sensitivity. The unit can simulate altitude from –100 to 50,000 ft with ±1.5-ft accuracy, be programmed with multileg climb / descend profiles, and be connected to up to two other test sets for coordinated two- or three-channel simulation.

50G Ethernet QSFP28 Transceivers are designed for 50G Ethernet application using fixed 103.25 Gbps data rate, comprehending 50G SR4, BiDi SR4, LR4, ER4 Lite, ZR4 which are defined by IEEE 802.3ba/802.3bm, 2km PSM4 which is defined by 50G PAM4 BIDI and CWDM4/CLR4 modules which are defined by 50G QSFP28 SM. Additionally, there are 2 special modules: 50G QSFP28 SM Low Power module which is useful in modern data center environments and can help to save power and lower heat dissipation and there is 50G QSFP28 LR4 Long Haul (20km) module which is extended reach version of 50G LR4.

The acronym DFB stands for distributed feedback laser. Their key features relative to other semiconductor lasers are their single longitudinal mode (single frequency) emission profile, their high stability and their tunability. These single frequency laser diodes are used in applications such as fiber optic telecommunications, spectroscopy, metrology and atomic physics. This sub-category of semiconductor lasers employs Bragg diffraction gratings in the active gain region of the semiconductor to form a waveguide. These diffraction gratings are designed to deliver periodic changes in the refractive index which cause a reflection back into the cavity of the laser. Unlike Fabry-Perot laser diodes, which utilize mirrors at both ends of the laser cavity, the reflection of the laser light in a DFB Laser Diode is along the entire cavity. DFB semiconductor materials include indium-phosphide and gallium-indium-arsenide-antimony.

Single Frequency Laser Diodes have a wavelength-selective grating integrated in the laser chip. Thus they operate on a single resonator mode emitting quasi-monochromatic radiation with a very small linewidth and low phase noise. The lasers can have very low-intensity noise because of the lack of mode partition noise. Due to the Gaussian mode the output is diffraction-limited.

QSFP28 optical transceivers, also known as quad small form factor 28 pluggable, are compact, hot-pluggable modules used for data communications applications. The QSFP28 format allows for 2×25 Gbit/s transmission and is capable of handling 100G traffic. QSFP28 can do a 2x25G breakout connection depending on the transceiver used. The NEON optics range of QSFP28 optical transceivers is comprehensive and meets the standards for usage for Ethernet, Fibre Channel Protocol and SONET/SDH set forth in MSA (multi-source agreement). All QSFP28 optical transceivers are supplied to us by the same manufacturing facilities used by the big name vendors and then fully tested in our NEON optics instrument and a selection of the equipment platforms at our telecoms test lab before dispatch. You will find a snapshot of the QSFP28 optical transceivers that NEON optics can offer at a fraction of the cost of OEM supply.

Marine watertight doors are available in aluminum, steel or a combination of these metals meeting IMO, SOLAS requirements. It can be opened and closed quickly and lightly. It is used for bulkheads with water tightness requirements. It can prevent the ingress of water from one compartment to another during flooding or accidents and therefore act as a safety barrier.

It limits the spread of water inside the vessel. These doors are used onboard in many ships such as in the fore and aft passageways underdeck and in engine room bulkheads leading to shaft tunnels in container vessels, large passenger ships, offshore vessels, oil exploration vessels.

They are used in areas where the chances of flooding are high. Areas such as engine room compartments and shaft tunnel and some of such places.

Therefore it is important that crew members are familiar with the system as well as the location of different powered watertight doors aboard the ship.

Watertight as defined in SOLAS is: capable of preventing the passage of water in any direction under the head of water likely to occur in intact and damaged conditions.

Weathertight is defined as that in any sea conditions water will not penetrate the ship.

To make it simpler, a watertight door can prevent the passage of water in both directions when subjected to ahead of water i.e it can withstand water pressure from both sides. They are designed to withstand continuous submersion and are therefore located below the waterline like shaft tunnels, ballast tanks, bow thruster compartments, etc. all openings below the waterline have to be watertight.

Watertight Doors Drill on Ships

1. Drills for the operation of watertight doors shall take place every week. Also, the doors should be checked before leaving the port.

2. All watertight doors, both hinged and power operated should be operated daily during the rounds.

3. The door should be able to operate from both local and remote places. i.e. bridge and ship control center.

4. If the door is operated from a remote location, there should be an audio and visual alarm during the closing

5. There should be an indication of both open and close on the remote place of operation.

Maintenance of Watertight Doors

The ship’s planned maintenance system must be followed for carrying out routine inspection and maintenance on watertight doors which should include the correct functioning of the whole system and specifically:

Warning devices and alarms

The electric/hydraulic mechanism

Valves

Fluid level indicators

Seals

Lights

All marine watertight doors provided by YSmarines have the certificate of GL- DNV, CCS, BV, ABS, LR, KR, RS, etc with customized sizes and colors, superior quality. For more detailed information, please visit the official site of ysmarines.com.

An active web guiding system is composed of a sensor, an actuator, and a controller. The web guide actuators are used for the fast response to the changes in the web edge position.

How dodes the web guide actuator work

When the output of the sensor goes to a controller which outputs a movement command to the actuator, the actuator which moves the guide mechanism may be a stepper motor and ballscrew for smaller assemblies.

Specifications of web guide actuator

Power supply voltage: DC 24V

Maximum speed: 30mm/s

Maximum stroke: 150mm

Maximum thrust: 200KG.F

Back-off error: less than 0.001mm

Push load: 2000KG

Advantages of web guide actuator

1. It adopts Japan’s Sanyo electric motor as the actuator, without carbon brush

2. Fully reliable and long service life, truly realize long-term maintenance-free during use

3. It has the characteristics of energy-saving and environmental-friendly

4. Adopting Taiwan precision ball screw with the smallest gap

5. Clearance and durability, so that the actuator has no backlash error.

6. Choosing from75-300mm stroke, 0.5T-10T thrust weight

7. Installation method has direct connection type and L type

Arise provides SE-150S/150/300/300S/75S type servo web guide actuator with advanced technology, superior quality and the most competitive prices.

An anchor is a vital part of the boat and is one of the most widely used items in the marine industry. The anchor is used to protect your boat. YSmarines which is one of the leading marine anchor suppliers, provides excellent quality products with high performance, beautiful design, maximum protection for boats and various types to meet customer’s requirements.

Fluke

Danforth anchors, are the top choice for most marines with overall lengths of 30′ or less. Fluke anchors provide sufficient holding power considering their small size. By design, they fold flat and are easy to stow in storage compartments. The anchor arm, or stock, buries itself after the pointed flukes dig into the bottom. For those reasons, fluke anchors are best in hard sand and mud. The flukes can’t penetrate rocky bottoms and are not recommended for slick, grassy bottoms. Loose mud or clay can foul the flukes and prevent bottom penetration.

Navy

The Navy anchor gets the nod for filling in for what the fluke anchor lacks. Navy anchors have long stocks and distinct arks and flukes. They are ideal for heavy grass, weeds and rocky bottoms where one arm can take hold of a crevice.

Claw

Claw anchors have great holding power for their size. Modeled after oil-rig anchors in the turbulent North Sea, the downsized marineing version sets effortlessly and holds in a variety of bottoms. Claw anchors are ideal for the windy conditions for which they are designed. They will hold no matter how much the marine swings around on the hook. Claw anchors are the obvious choice for large, open bodies of water. 

Spek

Spek anchor is one type of the stockless anchor. It is the improved anchor with a lower point of gravity from the hall anchor, whose core of anchor head is located in the center of the pin centerline to the bottom. The structure of spek anchor is characterized that there is anchor crown plate and reinforcing ribs at the anchor crown. The anchor claw is easy to turn to the ground and then has a better stability. The smart design makes it a perfect fit for the anchor pocket. And the anchor flukes will keep naturally upwards and overturn immediately when touching the hull plate to avoid damaging the shell plating.

TW Type

The TW type pool HHP anchor has more than 2 times holding power than the conventional anchor of the same weight. The anchor has large flat flukes made out of high tensile steel plate material. The thickness varies from 15 mm up to 140 mm depending on the anchor size. It allows a weight reduction of 25% compared to a conventional anchor for the same equipment number It has a fully balanced type and unbalanced type. The fully balanced type always has its flukes in a vertical position while lifting the anchor. The unbalanced type will tip over to one side.

Mushroom

Ideal for canoes, kayaks and jon marines, the mushroom anchor works best in soft bottoms, where it creates penetration based on suction. Makes a decent lunch hook anchor, but is not recommended as the primary anchor.

Arise is an audited, leading web guiding system manufacturer in China with a professional R & D team. Arise can provide advanced web guide sensor for continuous and accurate edge position control of coil materials.

AE400 CCD Image Sensor

AE400 CCD image sensor adopts an imported CCD sensor and the lens. It can track the edges of various materials with a real-time screen display and an easy full-touch operation.

1. No need for polarity conversion.

When the coil baseline and line asymptotically or the left and right edges are reversed, there is no need to switch the polarity of the control output.

2. No need to re-adjust the gain.

The deviation of the edge from the output voltage is not affected by the width or color of the line. Therefore, once the gain of the controller is set during the test run, there is no need to re-adjust the gain.

3. Position signal hold function.

When a line leaves the field of view and when it returns, the position signal generated immediately before the line leaves the field of view is maintained and output. Therefore, when the web bending speed is fast and the line (edge) will be out of the field of view, the tracking operation will be performed.

4. The line (edge) position is displayed by LED.

The control action, even if the integral action is standard, can also be combined with the position transmitter to perform proportional action. The most suitable control action can be selected according to the machine used.

5. When the detected edge is in the center of the field of view, an LED indicator lights up.

When the device is connected to a controller with a drive lock input, in the case of intermittent lines, when an interruption is detected in the line, the drive is locked and the tracking operation is stopped until the next line appears.

A100 Infrared Edge Sensor For Reading Web Edge

Arise A100 infrared edge sensors are specifically designed to read the edge of webs which has the features of sound-transparent, thick weaves and non-transparent. The web guide sensor uses an infrared LED as the light source. The light is reflected through the material and is then recorded by a CCD line. The CCD elements illuminated in this way in the edge sensor issue a higher signal level. The signal level can be converted into an output value proportional to the web edge position.

Features

1. Adopting high-speed DSP chip, full digital processing, truly no drift, strong anti-interference ability

2. Adopting imported infrared-sensitive components with 0.01mm resolution

3. Fully sealed titanium alloy shell design with special surface treatment, to prevent dust and pollution, anti-corrosion

4. It can detect any material (including mesh material) without adjustment

5. DC12V single power supply, 0-5V analog output, two switch output

6. Easy setup

A200 Ultrasonic Edge Sensor For Precise Web Guiding

In the process of web guiding, the web edge control can be realized by an edge sensor. The ultrasonic web guide sensors are designed for detecting the edges of materials such as paper, a plastic film of any color, with reliable and certain identification of deviations. When the receiver establishes an analog voltage signal that is proportional to the impulse intensity. Then the web reaches the air gap, the impulses are weakened, which makes the sensor to precisely recognize the web edge.

Advantages

1. Adopting high-speed DSP chip, full digital processing, truly no drift, strong anti-interference ability

2. Adopting Japanese Fuji high-precision ultrasonic sensitive components with 0.01mm resolution

3. Fully sealed titanium alloy shell design with special surface treatment, to prevent dust and pollution, anti-corrosion

4. The ambient noise of the workshop has no effect on ARISE’s unique ultrasonic technology

5. It can detect any material (including mesh material) without adjustment

6. DC12V single power supply, 0-5V analog output, two switch output