| Technical Data |
| Data transmitting to receiving device |
| kind of modulation |
FM, DPSK on subcarrier 2,4kHz
Modulation of subcarrier by software |
| FM frequency sweep |
3 kHz |
| mode of transmission |
transmitting in blocks |
| test for correct data transmission |
by block parity with error correction |
| data rate (P, T, U) |
>1/s |
| data rate additional channels |
>1/s |
| data rate GPS (Pos, WD, WV, height) |
1/s |
| DPSK= Differential Phase Shift Keying |
| Technical data of Radio weather sonde DS99 |
| dimensions, weight |
LxWxH = 93x95x175 mm³ |
| weight without batteries |
150 gr. |
launching weight with batteries and unwinder
(using T,U,P,GPS – Module) |
<300 gr. |
| quantity of radio sondes in one parcel, total weight |
10 pc., with batteries
approx. 3,3 kg |
| dimensions of parcel |
LxWxH= 400x300x180mm³ |
| Storage |
| time, ambient temperature, humidity |
one year, -40°C...+70°C, non condensed |
| power supply |
| batteries |
3 x 3V lithium sulfur dioxide |
| type (single battery) |
G36 2.1 SAFT |
| transmitter |
| frequency (crystal stabilized, programmable) |
402,01 – 405,99 MHz,
by set up software |
| adjustment of frequency, channel spacing |
via software ADS99 during set up, steps of 20kHz according to BAPT 222 ZV 128 |
| transmitter output power |
typical 100mW at 7VDC |
| drift of frequency during ascent |
<5kHz |
| bandwidth |
<15kHz |
| modulation |
FM, DPSK on subcarrier |
| transmission ratio |
<1s P,T,U |
| cyclic measuring ration P,T,U |
<0,5s |
| operating time each battery pack (using P,T,U,GPS) |
>2 h |
| sensors |
| pressure sensor |
| sensor |
aneroid – with strain gauge, temperature compensated |
| measuring range |
1060 - 1 hPa |
| resolution, range |
0.1 hPa, 1 .. 1060 hPa |
| accuracy, range |
<0.5 hPa, 1050 - 5 hPa |
| temperature sensor |
| sensor |
wire resistor |
| measuring range |
-90 .. +50ºC |
| resolution |
<0,1K within –95 .. +60°C |
| accuracy, range |
<0.2K within -80 .. +40ºC |
time constants at
1000 hPa
10 hPa
( on launching speed of 5m/s) |
< 1s
< 10s |
| relative humidity |
| kind of sensor |
Polymer, capacitive |
| resolution |
0,1% within 0 .. 105% |
| measuring range |
0 .. 100% relative humidity |
accuracy
(at tamb= -25°C .. +40°C) |
±5% within 0 .. 100% relative humidity,
below 0°C until ice saturation |
time constants at
+20°C
–20°C
(with launching speed of 5m/s) |
< 5s
< 40s |
| position |
| sensor |
12 channel GPS – receiver with passive patch antenna, adjusted to the same satellites as in the ground station |
| kind of measuring |
C/A code correlated GPS |
| accuracies |
| geogr. width |
≤0,001 degree (≤100m) |
| geogr. length |
≤0,001 degree (≤100m) |
| height over normal zero |
≤10m @ –400 till 40.000m
@ 40.000 till 50.000m |
| resolutions |
| geogr. width |
≤0,001 degree |
| geogr. length |
≤0,001 degree |
| height over normal zero |
≤10m |
| measuring range |
height ≤50 km
speed ≤200m/s |
| wind data |
| wind speed |
|
| accuracy |
±1,0m/s 0..150m/s |
| resolution |
±0,1m/s 0..200m/s |
| wind direction |
|
accuracy >5m/s
accuracy from >3m/s
averaging time 30s |
±5 degree 0...360 Grad
±10 degree 0... 360 Grad |
| resolution |
±0,5 degree 0... 360 Grad |
| cycle of measuring position data |
1/s |
| cycle of transferring GPS-data |
≤1s |
| additional channels |
| channel 1 |
serial, 16 bit |
| input level |
CMOS |
| channel 2 |
serial, 16 bit |
| input level |
CMOS |
| channel 3 |
Analog input 0...5VDC
input resistance 100 kΩ |
| A/D converter |
16 bit |
| error of linearity , total |
±3LSB |
| gain error |
±3LSB |
| offset error |
±8LSB |
| cycle of transmitting additional channels |
≤1s |
Operating Manual