Ground
See Also: Earth, Soil, Ground Penetrating Radars
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Cassegrain Antennas
In telecommunications and radar, a Cassegrain antenna is a parabolic antenna in which the feed antenna is mounted at or behind the surface of the concave main parabolic reflector dish and is aimed at a smaller convex secondary reflector suspended in front of the primary reflector. The beam of radio waves from the feed illuminates the secondary reflector, which reflects it back to the main reflector dish, which reflects it forward again to form the desired beam. The Cassegrain design is widely used in parabolic antennas, particularly in large antennas such as those in satellite ground stations, radio telescopes, and communication satellites.
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Fixed Telephone Communication
PBE provides Fixed Phone Voice Communication for safe, efficient and reliable underground operation.Two-way voice communication underground is a necessity to provide a safe and productive work environment. PBE offers a number of fixed phone solutions that can be deployed to provide secure voice communications. Solutions can be analogue or digital and be either stand-alone or integrated into PBX and mobile infrastructure.PBE Fixed Telephones provide clear and undistorted communication throughout the entire underground phone system. PBE telephone networks are compatible with other analog and VoIP phones on the market today which allows to combine different products for a complete communication system above and below the ground.
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44U (77") Non-Insulated Bus Bar
BB-77
44U (77") non-insulated bus bar provides cabinets with recessed rail option and a convenient, isolated common grounding mechanism.
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Specialized Single Board Computer
VPX3-673
Curtiss-Wright Defense Solutions
The VPX3-673 is a specialized single board computer and timing card designed to eliminate the need for multiple in-platform boxes to field new navigational capabilities and simplify the integration of complementary PNT sources on ground vehicles.
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NI-9205, cDAQ-9171, and cRIO-9940 USB Voltage Measurement Bundle
865683-01
NI-9205, cDAQ-9171, and cRIO-9940 USB Voltage Measurement Bundle - The USB Voltage Measurement Bundle with NI-9205, cDAQ-9171, and cRIO-9940 includes the NI-9205 C Series Voltage Input Module and the cDAQ-9171 CompactDAQ Chassis for voltage measurements. This bundle also includes the cRIO-9940 Backshell for strain relief and operator protection from high-voltage signals. The included NI-9205 features a channel-to-earth ground double isolation barrier for safety, noise immunity, and high common-mode voltage range. Additionally, the NI-9205 provides up to 60 V of overvoltage protection between input channels and common, and it is rated for 1,000 Vrms transient overvoltage protection.
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Dual Channel High Voltage Linear Amplifier
F1020
This unit contains two independent amplifiers that share common ground reference and power supply. Left channel correspond to the F10A model and right channle corresponds to the F20A model.
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NI-9265, 4-Channel C Series Current Output Module
783733-01
4-Channel C Series Current Output Module - The NI‑9265 is ideal for interfacing and controlling industrial current-driven actuators at high rates. The module has built-in open-loop detection, which generates an interrupt in software when an open loop is detected as well as zeroing outputs to ensure safety and avoid driving actuators at system power on. The NI‑9265 requires an external power supply and includes a channel‑to‑earth ground double isolation barrier for safety and noise immunity.
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Isolated Analog Input Expansion Board
MSXB 084
The MSXB 084 Isolated Analog Input Expansion Board provides isolated analog inputs for DAP systems. Use these boards to eliminate ground currents – a potential source of noise in your measurement and control signals – and eliminate timing skew.
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Insolator
The USB isolators effect a potential decoupling of all USB connections and separate the 'normal' PC system from the critical application. They are the professional tools to avoid and fight ground loops and equalizing currents and to protect against overvoltage.
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Power Analyzers & Wattmeters
Measurements International Ltd.
Direct Replacement for 2010A Wattmeter in the AccuLoss® Loss Measurement Systems, Basic Power Accuracy < 0.005 %, 10 Current Ranges, 2 Voltage Ranges, Line-and-Line and Line-to-Ground Voltage Measurements, Full Power Factor Range, Complete Waveform Analysis, Total Harmonic Distortion Analysis, Phasor Analytical Representation.
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Ground Bond Tester
HYAMP® Series
HYAMP III includes productivity-enhancing features and proven safety technology to reduce the compliance bottleneck on the production line. All models verify the integrity of your product's ground circuity with accurate 4-wire measurements and offset capability.
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VME Test Extender 9U/400mm J1/J2/J0
111EXT9140-0120
The VME extender boards are designed to bring a circuit card completely out of a card cage so that it can be tested or debugged on both sides of the test board. Each signal, power, and ground line can be individually isolated with the DIP switches.
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DIN Backplane
VECTOR Electronics and Technology, Inc.
Universal (uncommitted) multilayer backplanes are designed for unique one of a kind applications requiring custom pin-out wiring from connector to connector. Each individual connector pin must be "assigned" by connecting to adjacent power or ground pins with wire or jumpers. Power or Ground input through a labeled series of power taps (screw terminals) along to top and bottom of the board.
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Chassis - Controls up to 16 Switch Modules in 16x8, 32x4, or Dual 16x4 Configurations
CXB/128-MF
These Chassis controls up to 16 switch modules in 16x8, 32x4 or dual 16x4 configurations. Available as single pole systems with the outer conductor of the BNC taken to ground, or isolated 2 pole systems switching both center conductor and ground. LEDs on the front panel show switch and power status. Add Switch Modules, Driver Modules and a Control Module to complete the system.
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SP4T RF Pin Diode Switches To 16 GHz
The 4-way series of absorptive and reflective switches operate from 100 MHz to 16 GHz. They are rated at 200 mW maximum input power and have a switching time of 100 ns. SP4T switches that operate up to 8 GHz have a maximum VSWR of 1.6:1 and minimum isolation of 60 dB. All absorptive and reflective switches manufactured by Pulsar Microwave require both positive and negative 5-volt supplies. Additionally, the TTL control logic operates from 0 to +5 VDC. Voltage connection is made with feed thru terminals. Ground connection is made through the chassis and turret terminals.
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EMI Check & Resonance Analysis Software
EMI Stream
At the placement design stage, EMI Stream software examines optimal locations for parts by using actual .dsn files and verifies the effects of the proposed EMI solution. EMI Stream can analyze resonance which occurs between the power and ground planes by analyzing the resonance which occurs and changing the locations of capacitors.
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Professional Cordless Circuit Tester
CT8002
No Ground or clip required. No ground wire means no wire tangles nor time lost searching for grounding points. High Impedance Electronic circuitry. Safety V-groove needle accessory for piercing and carrying. Negligible current draw ( 20 micro-amps) is 10,000 times less than regular lamp type testers. This gives complete safety when working around sensitive electronic control modules and sensors. Operating range between 3 and 28 Volt DC in battery powered systems.
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Digital Megohmmeter Test Kit
STME-RT1000F
Statclean Technology (S) Pte Ltd
This is a Resistance-Resistivity-Humidity-Temperature Test Kit. It is easy to operate, compact, lightweight, portable meter designed to measure temperature, humidity, and electrical resistance/resistivity. It has both internal and external test probes. The meter will measure resistivity, resistance between two points, and resistance to ground according to EOS/ESDAssociation Standards, -S4.1, S6.1, S7.1, S11.11, and European Standard CECC-EN 1000/15.
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Source of Signals
CRS+
The CRS+ is a stable and calibrated source of signals which cover the 9KHz - 30MHz frequency range. The fundamental signal is a 15KHz comb and each harmonic is output as a narrowband peak of known amplitude. This signal is output on either the L and N lines, referenced to ground. A switch provides on/off and line selection.
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3U VPX 6 Slot Power & Ground 10G Pass Through
101VPX306P-9X12R
Power for 3.3V, 5V and 12V are included, rear connectors are all fully loaded, use with Elma’s slot to slot or slot to I/O bulkhead cable products during system development.
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Solid State Power Amplifiers (SSPAs)
CHANGSHA KAIYUAN INSTRUMENTS CO., LTD.
* Ruggedized for use in pulsed airborne, naval and ground radar* Found in weather forecasting Doppler radar systems* Utilized world-wide in air traffic control and precision approach radar systems
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Leakage Current Tester and Clamp-On Earth / Ground Resistance Tester
10µA Ultra High ResolutionLarge Conductor Diameter (30mm)AC Current in 5 Ranges (40mA, 400mA, 4A, 40A, 60A)Wide Frequency Response (40Hz-1KHz)ACA, ACV, Ω and ContinuityLarge 3¾ Digit LCD (4000 Count)40 Segment Fast Bargraph Display (20 times/sec.)Data Hold and Max / Min HoldRelative Measurement600 Vrms Overload Protection in Resistance Range
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Mechanical Tester
UMT TriboLab
Bruker’s Universal Mechanical Tester (UMT) platform has been the most versatile and widely used tribometer on the market since the first model debuted in 2000. Now, newly designed from the ground up, the UMT TriboLab™ builds on that legacy of versatility with a unique modular concept that harnesses more functionality than ever before—all without any compromise in performance.
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Semi-Rigid Test Probes Up to 6 GHz
Fairview Microwave’s semi-rigid test probe assemblies come in multiple cable diameters to help when attaching the unterminated end of the probe to a circuit board trace. There are two versions including straight-cut probe ends for those that would like to customize the dimensions of the center conductor and dielectric dimensions, as well as pre-stripped probe ends that are ready for immediate use. By soldering the outer conductor to the signal ground and the exposed center conductor to the trace carrying the signal of interest, simple sampling measurements can be made without having to create a separate subassembly circuit board or add a connector to the circuit layout which can take up valuable real estate. Fairview provides 3 diameters of semi-rigid coax and 3 different lengths from 3 inches to 12 inches to fit a variety of trace widths and applications. All test probes are 100% RF tested to ensure the cable assemblies operate to 6 GHz and also to make sure that the SMA connector interface meets the 1.35:1 VSWR specification prior to shipping. To protect the small diameter coax from damage, each part is shipped in a clear protective tube that can also be used for storing the probes for future use.
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Environmental Vibration
The monitoring of environmental and ground vibration is required because vibration can cause both damage to local structures and distress to nearby residents. There are many sources of environmental vibration where monitoring is required, common sources are Civil Engineering Works, Quarrying and Blasting, Construction Sites and road works.
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Earth Resistance Tester
G-TEST
To check the condition of a grounding connection, an earthresistance tester is used to measure the residual ground voltage,resistance and resistivity (Wenner method).
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Solid State Power Amplifiers
SSPAs
Communications & Power Industries
- Ruggedized for use in pulsed airborne, naval and ground radar- Found in weather forecasting Doppler radar systems- Utilized world-wide in air traffic control and precision approach radar systems
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3U 1-Slot OpenVPX P&G, Aperture E, VITA
101V301P02-9X12R
3U 1-Slot OpenVPX Power & Ground, Aperture E, Supports VITA 66.4/67.3A/67.1 in J2A+B, Pass through, w/ROHS, Max data rate (Gbps) 10.
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Line Tester
CAT 1 TEST
Monacor International GmbH & Co.
Line tester for continuity testing of Cat 5, Cat 6 and ISDN network cables*Connection test with LED display for 8 individual wires and shielding*Continuity, miswire, open, short, crossover, and ground detection*Connector compatibility with the following modular plugs: RJ45 (8P8C), RJ12 (6P6C), RJ11(6P4C, 6P2C)*Network standards supported: Token Ring, 10Base-T, 10Base-T2, 285A, TIA568A/568B*Separate receiver for particularly long and complex cables*The main unit and separate receiver can be attached to one another using a guide rail on the side*Power supply via 9 V block battery (not included)*Supplied with protective bag
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Low Circuit Tester
26250
Helps locate shorts or breaks in wiring. Complete with insulated grounding clip.
