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Date: May 2019 This document was prepared by the staff of Valeport Limited, the Company, and is the property of the Company, which also owns the copyright therein. All rights conferred by the law of the copyright and by virtue of international copyright conventions are reserved to the Company. This document must not be...
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Please note: Any changes or modifications to the product or accessories supplied, that are not authorised by Valeport Ltd, could void the CE compliance of the product and negate your authority to operate it. This product has demonstrated CE compliance under conditions that include the use of shielded cables. It is important that you use shielded cables compliant with the product’s conformance, to protect from potential damage and reduce the...
0430844c - VA500 Altimeter 2. Introduction The VA500 altimeter has been designed with the objective of providing an accurate, reliable and robust measurement of range from surface and underwater platforms. State of the art signal processing offers unrivalled range and performance from a 500kHz transducer.
RS232 & RS485 fitted as standard Protocol: 4800 to 115200 baud, (8,1,N) Formats: Valeport NMEA / Tritech / Kongsberg / $SDDBT / NMEA Analogue output: 0-5/0-10 V fitted as standard RS485 is enabled by grounding pin 9 to pin 5 in the communications lead...
Configuration and Operation 5. Configuration and Operation The VA500 is supplied with a Valeport Terminal, a terminal communications program and configuration tool designed specifically for use with Valeport instruments. Install the program by opening the install package on the supplied CD and follow the on screen instructions. Once installed, launch the terminal program 5.1.
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The next page defines: Output units, can be seconds, metres, feet or fathoms. Minimum range allows fixed returns close to the VA500 to be filtered out. Maximum range allows filtering of spiking in noisy environments or in the presence of multiple echoes.
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Latitude is used in the conversion from pressure to depth. Continuous output rates can be 1,2 or 4 Hz Alternatively the VA500 can be triggered with a serial command (S followed by a carriage return) or via TTL (see wiring schedule in...
0430844c - VA500 Altimeter 5.2. Manually Configuring The Unit Alternatively the VA500 Altimeter can be manually configured via serial communications using a series of # code commands. This can be with Valeport terminal or an alternative terminal program such as HyperTerminal.
0430844c - VA500 Altimeter 5.5. Sampling Regime # code Followed By: Operation <CR> Performs Single measurement Performs continuous measurement at set rate. If rate is omitted then instrument performs continuous rate<CR> measurements at previous rate. 1,2, or 4 Hz Set mode without putting unit into run mode...
Configuration and Operation 5.7. Range Settings The VA500 has a standard operational range of 0.1m to 100m. If required this can be restricted with the setting of a minimum range and maximum range. The default setting for sound speed used to calculate range is 1500 m/s...
0430844c - VA500 Altimeter 5.8. Pressure Settings The pressure sensor fitted to the VA500 measures absolute pressure, i.e. it includes atmospheric pressure. The pressure tare function allows the atmospheric pressure (as measured by the sensor before deployment) to be removed from the readings, so the output is simply pressure of water. Note also that by taking a tare reading at any fixed point in the water column, readings will then be output relative to that point.
6. Output Telegram Formats If the optional pressure sensor is fitted and enabled then the only data format that supports this is the Valeport NMEA format. A number of other formats have been implemented to provide compatibility with existing systems.
= Destination ID (ID of Host - fixed) = Source ID (ID of Device responding - fixed) xx.xxx = Data – NO TARE applied (psia) <CR><LF> Telegram example: Valeport NMEA telegram appended by the DigiQuartz type telegram (without psia units) >#042;1 (enable DQ output) >#028 (run) $PRVAT,05.432,M,0010.076,dBar*39...
0430844c - VA500 Altimeter 7. Care and Maintenance There are no user serviceable parts within the VA500. The VA500 is remarkably robust, being primarily constructed of titanium. The only maintenance required, other than periodic recalibration as necessary, is to keep the sensor as clean as possible.
0430844c - VA500 Altimeter 8.1.1. Extended Y Lead - Power/232 Comms / Analogue END1: SubConn END 3: MCIL10M 9 Way D + DLSA-M END 2: Socket Connector FUNCTION Black 4mm Plug RS 444-797 Red 4mm Plug RS 444-832 Analogue +ve...
0430844c - VA500 Altimeter 8.2.1. Test Lead with 6 Way Female Impulse Connector END 1: 6 Way In Line END 3: Female END 2: END 2: 9 Way D Impulse Power In Analogue Out Socket Connector Connector FUNCTION Black 4mm Plug...