Two Way Pager

Model : ST902

Protocol 2Way ReFLEX Protocol Version 2.7.2 per DSG ReFLEX Protocol Compliance Matrix for version 2.7.2
Memory Minimum 512K Bytes
Display LCD Size – 64.76 x 32.08 mm(2.55 x 1.26 in)
View Area – 60.8 x 25.2 mm(2.39 x 0.99 in)
- Zoom Out Font : 6 x 8 (20 Characters 6lines)
- Zoom In Font : 12 x 16 (10 Characters 3lines)
EL Backlight
Time, Date, Days display
Alert Mode display
User Name, provider name display
Registration status and device’s Rx/Tx status display
Battery status display
Contrast control
Keyboard QWERTY keyboard
Battery Alkaline AA 1.5V
Backup: NICD1.2V * 3 CELL
OS Non-OS
PC compatible Universal Serial Bus (USB)
Backup/restore Software User backup/restore of address book, user settings data etc.

  • Windows 2000, XP and Vista compatible
Battery Life Device battery life shall be a minimum of 21 days. This requirement shall be tested under the following minimum conditions:

  • Battery Type: AA alkaline (1400mAh)
  • Device Messaging Profile
    • 10 message receive & view /day (300 character each)
    • 10 message composing & transmitting/day (40 character each)
    • 10 IS message receive & view/day (600 character each)
  • Device Setup and Operational Parameters
    • Alert : 10 second default, No backlight use
    • No background scanning
    • System collapse: 3
    • Data rate (Rx,Tx): 6400bps

SPECIFICATIONS

Radio Transmitter
Frequency synthesized 901-902 MHz (896-902MHz) in 6.25 kHz
steps from a country specified base frequency
Channel Spacing 10 kHz or 12.5 kHz, per option
Bit Rates 800, 1600, 6400, 9600
Signal format 4 level FSK
Freq. Deviation +/- 800Hz, +/- 2400Hz
Emission standards To narrow band PCS FCC spec
Frequency Stability 1 ppm over 1 minute without external reference (known as coasting)
Output Power Output Power 32 dBm max.
All RF parameters To be compliant with USA Mobility TA requirements
Radio Receiver
Frequency synthesized 929-932, 935-942 MHz steps from a country specific base frequency
Channel Spacing Channel Spacing 10 kHz or 12.5 kHz, per option
Bit Rate 1600, 3200, 6400
Requirement per ReFLEX Protocol version 2.7.2
Sensitivity 90% Clean Message Rate (CMR) @ 14 μV/M.

“CMR” is defined as the percentage of successfully decoded 80 character messages.

Emission Standards per narrow band PCS FCC specs
Image Rejection Better than 45 dB
Spurious response Better than 40 dB
Selectivity 55 dB +/- 25 kHz
Inter-modulation
Immunity
Better than 50 dB
Inter-modulation
Immunity (high level)
Better than 35 dB