SAIC Exploranium – GR-135 System Manual page: 45
Precision (NaI) :
±10% in range 100 keV - 3.0 MeV
±20% in range 60 keV - 100 keV
Output: Memory or PC.
MISCELLANEOUS
CLOCK - CALENDAR
Type: Built in 24-hour clock, 4-year calendar (including leap year).
Full battery backup, 10 year retention time.
Precision: +/- 3 s/day at 25 deg. C.
+/- 30 s/day over full operating temperature range.
DATA STORAGE
Type: 2MB CMOS SRAM memory, with Li-battery back-up.
Capacity: 40,000 samples, including time/date (SEARCH+DOSE mode)
or
187 spectra ( IDENTIFY mode - 1024 channels ), including time/date
Data Retention Time: Typically 10 years, limited by Li-battery life.
Stored Data Retrieval: Via serial channel to a computer.
DATA OUTPUT
Type: Serial channel RS-232C, 1 start bit, 8 data bits, no parity, 1 stop bit.
Baud Rate: 19200 Bd.
Format: Binary data in packets - see Appendix I.
GENERAL DATA
DISPLAY
Type: WTSTN (Wide Temperature Super Twist Nematic) graphics LCD, 128 x 128
pixels, LED backlight. Viewing area: 67 x 67 mm.
Contrast: Digitally adjustable in 20 steps, by joystick in selection menu.
POWER REQUIREMENTS
Battery voltage = 3 V
Power usage OPERATION NORMAL
Measurement: 0.65 W 1.2 W
Main menu and
all setting menus: 0.35 W 0.7 W
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