Campbell Scientific DCP100 GOES Data Collection Platform - Manual (Page 10)

DCP100 DATA COLLECTION PLATFORM
2
Phone
modem
NESDIS
Wallops Station, VA
ground station has
10 asynchronous
dial circuits
communication/power cable
Antenna cable
Environmental enclosure
Phone
line
Computer Base Station
Transmitter
Power
supply
Datalogger
Data Collection Platform
Yagi antenna
FIGURE 2-1. Data Retrieval Diagram
3. TGT1 TRANSMITTER
SPECIFICATIONS
Output level: +40 dBm (10 watts), +1.0 dBm
at 12 VDC with automatic leveling control
Typical current drain: 9 mA quiescent, 2200
mA active
Operating temperature range:
−
40
°
to +60
°
C
Supply voltage range: 10.5 to 14.0 VDC
Dimensions: 3.5" x 7.2" x 4.4" (8.9 x 18.3 x
11.2 cm)
Weight: 2.1 lbs (1.0 kg)
Self-timed buffer: 2000 bytes
Random buffer: 2000 bytes
Transmission rate: 100 bits per second
Typical number of data points transmitted:
118 for a 1 minute transmit-window (with 15
second guard bands)
Maximum EIRP allowed by NESDIS: +50 dB
Antenna's maximum gain: +9 dB with right-
hand circular polarization, +12 dB with linear
polarization.
Clock accuracy: Capable of running 420 days
without adjustment.
4. REQUIRED EQUIPMENT
4.1 COMPUTER BASE STATION
The equipment required at the computer base
station is listed below.
•
Phone modem with MNP level 4 error
correction. (Most commercially available
Hayes-compatible modems contain this
error-checking protocol. Check the
operator's manual for your modem).
•
Computer with user-supplied commu-
nication software (e.g., Procomm Plus,
Crosstalk).
4.2 FIELD STATION
The field stations equipment is illustrated in
Figures 4-1 and 4-2. The required equipment is
listed below.
•
TGT1 satellite transmitter.
•
Datalogger (CR23X, CR10X, CR500,
CR510, CR10, or 21X). A CR10KD
keyboard/display is required when using a
CR10X, CR10, CR510, or CR500. The
CR10 and 21X require a special PROM.
When using a 21X with both a TGT1 and a
storage module (SM192, SM716, or CSM1),
hardware and datalogger programming
modifications are required. Contact a
Campbell Scientific applications engineer
for more information.
•
Yagi antenna, mounting bracket, and
coaxial cable.
•
Weather-proof enclosure.
•
12 Volt power supply, charging regulator, and
a solar panel.
•
A filter is also required when measuring
sensor(s) requiring equalization with the
atmosphere (e.g., vented pressure transducers,
NESDIS
Wallops Station, VA
ground station has
10 asynchronous
dial-up circuits
,+2