FDM509: Frequency Deviation Monitor for 50/60Hz power line networks

Key Features

Monitoring of Mains Frequency
Pre-connected GPS167 or PZF509 as Reference
2 analog outputs (time deviation and/or frequency deviation)
Serial RS232 Interface
Calculation of Time based on the Local Frequency

Product Description

A preconnected reference is necessary that provides a high accuracy 10MHz clock, a serial time string and a PPS (pulse per second). The accuracy of the measurements is derived from these signals.

The module calculates the frequency as well as the time, based on the mains frequency. The time deviation (TD) is the difference of this calculated time (PLT) to the reference time (REF). This time deviation as well as the frequency itself is sent out via serial interface or is beeing converted to an analog voltage output provided by a DAC.

The board is equipped with a flash memory and a bootstrap loader which allows to update the systems firmware via serial port.

Please note that the display shown above is not included, see DU35K product page for further details.

Characteristics

Input signal	10MHz, serial time string (via COM1), PPS mains frequency, 70 - 270VAC, 50Hz or 60Hz
Interface	Two asynchronous serial RS232 ports COM0: 9600 or 19200 Baud, framing: 7E2 or 8N1 COM1: 19200 Baud, framing: 8N1 output and average once per second or once per minute Output string: The frequency, frequency deviation, reference time, power line time and the time deviation are send out. The format is: F:49.984 FD:-00.016 REF:15:03:30 PLT:15:03:30.368 TD:+00.368[CR][LF]
Resolution of Measurement	frequency: accuracy of reference (10MHz) ±1mHz time deviation: accuracy of reference (PPS) ±1ms
Analog outputs	2 analog outputs for longtime-recording (time deviation and/or frequency deviation), range: -2.5V ... +2.5V, resolution: 16Bit
Dimensions of the front panel	8HP/3U (40mm x 128mm)
Electrical Connectors	rear VG edge connector, mixed F/H, DIN 41612, Type F: 24 pin, type H: 7 pin optional mains socket in the front panel
Operating Voltage	+5 V DC
Current Draw	180 mA
Board type	Eurocard
Board Dimensions	160 mm x 100 mm, 1,5 mm Epoxy
Supported Temperature	Operational: 0 - 50 °C (32 - 122 °F) Storage: -20 - 70 °C (-4 - 158 °F)
Supported Humidity	Max. 85 % (non-condensing) at 40 °C
Options	power line input via mains socket in the front panel Hardware and software modifications accordding to customer specification
RoHS Status of Product	This product is fully RoHS-compliant.
WEEE Status of Product	This product is handled as a B2B (Business to Business) category product. To ensure that the product is disposed of in a WEEE-compliant fashion, it can be returned to the manufacturer. Any transportation expenses for returning this product (at end-of-life) must be covered by the end user, while Meinberg will bear the costs for the waste disposal itself.