Vertrieb

Receiving Unit DSE99
Picture of Receiving Unit DSE99

The Receiving Unit DSE99 is designed to receive the digital data stream sent from the family of digital Radiosonde DSxx and to prepare it for further use by the Software System ADS99.

It too is the Interface between the PC and the Radiosonde during set up of the Radiosonde.

Inside a 19” housing there are printed circuit boards for decoding the received data, converting the data into ASCII data set and power supply during set up of the Radio weather sonde DS99 and antennas.

The further devices are the sensor for measuring of ground pressure, the receiver for radio sonde signal and the reference receiver for GPS as well as the power splitter for indoor GPS supply.

On the rear panel there are all of the plugs to connect the receiving device with PC, AC or DC power and the antennas.

At the front panel there only are the main switch and the plug for connecting the Radio weather sonde DS99 during set up procedure as well as the connector for indoor GPS supply.

All necessary adjustments are done via software ADS99 with the PC. Because of this remote control, i.e. control of speakers loudness too, the receiving device has not to be placed in direct reach of the operators hand.

Technical Data
Case dimensions
19” standard 63HP x 2HU x 300mm
ranges of temperature  
working temperature 0°C ... +50 °C non condensing
storage -30 ... +70 °C non condensing
supply voltage 12V DC or 230 V/50 Hz, approx. 50W
mobile versions 24VDC  lorry supply
receiver unit for Radiosonde triple superhet, controlled by  PC
sensivity for S/N 1:1 <= 0.5µV
AFC frequency adjust within ±5kHz around center frequency
Controls remote control by PC/ADS99
antenna (radio sonde receiver)  
type vertical polarized  omni directional antenna, 1.5 dB gain, additional low - noise GaAsFet amplifier, 20dB gain, noise max. approx. 0.9 dB
dimensions, weight (incl amplifier) length x  max. diameter:
 ca. 900mm x 200mm, ca. 3.5 kg
material antenna: brass with housing made of Fiberglas, fitted on carrier from aluminum;
amplifier: housing made of PVC
connector type N
length of cable, type, connector 20m, type RG213/U, connector „N“
lightning arrester all of the parts of the metal antenna device are electric connected to the mast or can be grounded by separate ground wire
wind load ca. 80 N (at WV=40m/s)
assembling by stainless steel clamps to a mast with diameter of 20 .. 54mm.
Depending on the diameter of the mast, cable can be wired inside or outside the mast pipe.
GPS engine 12 channel , C/A code correlated
GPS – antenna  
gain ca. 5,5dBic
working temperature -40 ... 85°C
storage temperature -40 ... 85°C
supply voltage 3 ... 5,5VDC
current consumption 20 ... 25mA
GPS indoor supply  
Antenna splitter 2x50Ω;
Splitter Amplifier low noise, gain 20dB
transmitter antenna passive Patch
Sensor for ground pressure  
ranges of temperature  
storage -25°C ... +60°C
working -25°C ... +60°C
interface RS 485, half duplex
supply voltage 11 ..  28VDC
pressure supply G1/8” outside thread
measured data  
non linearity, hysteresis, repeating accuracy 0,01% FS (1,15hPa)
long term stability <100ppm/Jahr
measuring range 35 hPa .. 1150hPa
accuracy
(-25°C ... +60°C)		 typical 0,1hPa on behalf of the calibration; max 0,13hPa
audio amplifier (acoustic control) ca. 0.5 W  loudness adjustable by software ADS99
interfaces to PC with ADS99 V.24 (RS 232 ) 19200 Bd, hardware handshake (DTR/RTS)


Operating Manual