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2.2. Specifications
2.2.1. General
The B900ss-20 is a radio card component that receives and transmits data according to
a frequency table selected by the user.
2.2.2.
Specifications of the B900ss-20
Dimensions
Weight:
<2 ozs. (< 50 grams)
Dimensions:
1.57" x 1.69" x .29" (without antenna).
Connectors:
1 14FMS-1.0SP-TF 14 pin connector from JST.
Electronics
•
Radio part
Frequency:
902 to 928 MHz (FCC part 15-247).
Number of channels:
50, channel 0 to 49.
Channel selection:
Frequency hopping, according to a random
table of 50 channels. 8 tables are stored in
EEPROM memory.
Radio rate:
40KBits/s.
Modulation/Demodulation:
FSK (Frequency Shift Keying).
Bit encoding:
Quad Frequential encoding.
RF sensitivity:
-90 dBm (
±
2 dB) at 50 Ohms.
RF power:
+13 dBm (20 mW) (
±
2 dB) over 50 Ohms.
Error rate:
10
-4
to -88 dBm.
Saturation:
Two modules communicate at 0 dBm.
Operating Temp.:
Standard Operation: +32°F to +122°F.
(0º to +50º Centigrade)
Storage Temp.:
-40°F to +176°F (-40ºC to +80º C)
Relative humidity:
from 20% to 90% RH (without condensation).
