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To
create your own product using the WWVB time signal use our
WWVB receiver modules, they are a complete solution using
proven technology.
Description:
The following range of modules offers a number of clear benefits:
Simple interface options to allow easy integration of accurate
timekeeping into electronic equipment, domestic goods, etc.
A low cost solution using dedicated chips designed specifically
to receive the WWVB (USA) time signal. The advantage of modules
over discrete solutions is that the modules include the necessary
support electronics, tuned crystals, etc., and are preassembled,
tested and in miniature form
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EM2S Receiver Module
When combined with a suitable Antenna the receiver
module acts as a complete time code receiver, providing
a serial digital data output stream for external decoding.
The module has a low-power standby mode with maximum
1µA current consumption. In active mode the current
consumption is less than 1mA, typically 500µA.
The data output is connected internally with an active
low open collector npn transistor.
EM2S Receiver Module General Specifications:
Dimensions: 25mm x 13mm x 12mm approx
Nominal operating voltage: +3V DC to 12V DC
Operating voltage range: 2.2V to 15V DC
Recommended voltage range 3V to 5.25V
Current consumption at+3V, active: <1mA
standby: <1µA
Output: Open collector npn transistor, active low
Maximum sink current: 15µA
Maximum collector voltage: +5.25V
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Antenna
This pre-aligned LC tuned ferrite antenna is specifically
designed for use with the EM2S Receiver Module.
Antenna General Specifications:
Dimensions: 60mm x 13mm or 100 mm *13 mm
Nominal operating frequency: 60kHz or 77.5KHz depending
on model
Resonant frequency: 60kHz ± 300Hz or 77.5 ±
300Hz
Bandwidth (-3dB): <700Hz
Sensitivity: >8µV output voltage with 100µV.m-1
field strength
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MCM-RS232 Microcontroller
Decoder Module
When combined with the EM2 Receiver Module and the
Antenna, this module provides time information in standard
RS232 data format via a serial interface. External buffering
to full RS232 levels is required and can be achieved
using a proprietary RS232 level shifter IC. The advantage
of the module compared to direct host decoding of the
receiver output is the presence of exact decoded time
information all of the time and no processing overhead.
The module also features a real time clock that recalibrates
itself against the Atomic Radio Time Signal when it
synchronizes with the Atomic Radio Time Signal
MCM-RS232 General Specifications:
Dimensions: 22mm x 13mm x 5mm approx
Nominal operating voltage: +3V DC
Operating voltage range: +2.4V DC to +3.6V DC
Current consumption at+3V, active: <1mA - Standby:
<50µA
Inputs:Time code data input (from EM2S), or EM6.
Serial data input (from host PC via suitable level converter)
Outputs:Power control output (for EM2S), Switching output
(for external time control), via suitable circuitry.
Serial data output (to host PC via suitable level converter)
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For more information CONTACT
Galleon
Links
Time synchronization information Index Pages
Main index, NTP Time server information pages
Category Pages
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Notice: All prices are quoted in US dollars, and are exclusive
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