User's Manual

7
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).