Spread Spectrum Radio Specifications; Connection To The Evaluation Kit; Power Connection; Serial Rs-232 Connection - Javad UHFSSRx User Manual

• Forward Error Correction (FEC): Reed-Solomon Error
Correction
• Data scrambling

SPREAD SPECTRUM RADIO SPECIFICATIONS

• Frequency Range:
902-928 MHz (USA);
915-928 MHz (Australia)
868-870 MHz (EU) with 25/20/12.5 kHz CS
• Link Rate, symbols/second:
4800, 9600 (EU)
9600, 19200, 38400, 64000 (USA/Australia)
• Carrier Frequency Stability: ±1 ppm
• Modulation: MSK/GMSK/4FSK

Connection to the Evaluation Kit

The UHFSSRx board can be connected directly to Evaluation Kit (p/n 99-571010-01) by its 16-Lead Header
Connector, ECS Corp., as it shown on the figure below.
The UHFSSRx may be connected to external antenna using TNC to MMCX RA Antenna cable (included in the Kit).

Power connection

The UHFSSRx powered through Evaluation Kit and Power Cable (included in Kit). The Banana plugs of power
cable may be connected to any available laboratory power supply, battery or other power source with power
parameters, suitable for particular UHFSSRx power specifications.
Note: Evaluation Kit does not provide any over-voltage protection. Connecting Evaluation Kit to voltage exceeding particular
UHFSSRx power voltage range may cause damage of UHFSSRx and Evaluation Kit board.
Note: valuation Kit provides reverse polarity protection only in voltages range, specified for particular UHFSSRx.

Serial RS-232 connection

A standard Null-Modem cable (included in Kit) with DB-9 Female connectors on both ends may be used to
connect PC COM_X port with Serial port on adapter.
Adapter's DB-9 male connector external view and pinout is shown on the figure below.
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• Communication Mode: Half duplex, simplex, repeater
• Radio Receiver Specifications
• Receiver Sensitivity for GMSK (BER 1x 10-4):
-113 dBm for 25 kHz CS
-113 dBm for 20 kHz CS
-114 dBm for 12.5 kHz CS
• Receiver Sensitivity for 4FSK (BER 1x 10-4):
-110 dBm for 25 kHz CS
-110 dBm for 20 kHz CS
-111 dBm for 12.5 kHz CS
• Receiver Dynamic Range: -119 to -10 dBm
• Forward Error Correction: Convolutional code
• Data scrambling

CONNECTION

UHFSSRx board connected to Evaluation Kit
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