Instruction Manual

Model 970 Instruction Manual 50
8 Specifications
Preamplifier
Type: Charge Sensitive
Input: Negative Current (anode)
Output: Positive HV supply variable 0 V to 2000 V (0.5 mA)
Negative HV supply also available
ADC
Type: 4096 channel, 14-bit pipelined
Speed: 50 MHz
Pulse Processing
Type: Digital, Trapezoidal Shaping
Shaping: 250 ns to 10 µs
Gain: Digital, x1, x2, x4, x15, x35, x125, and x250.
LLD: 0 to 100 % of full scale digitally adjustable in .006 % intervals
ULD: 0 to 100 % of full scale digitally adjustable in .006 % intervals
Zero: -5 % to + 5 % of full scale, digitally adjustable
Spectrum Conversion
Collection Mode: Linear – 16384 Channels
Conversion Modes: Linear – 4096 Channels
System Controller
Processor: PPC405 CPU at 50 MHz
Controls: SNAP-MCA and SNAP-MCA Full software
I/O: RS-232 (16550 UART or higher)
USB port is also acceptable if USB-to-RS232 adapter is used
Input Power
Batteries: Internal, 6 x 1800 mAh NiMH AA batteries
AC: 110VAC or 220VAC to 12V DC adapter (1.25A)
Motor Vehicle: 12V, 1.25 A if Fast Charge, 750 mA if Slow Charge
Output Power
Logic and Alarms: +5V, +12V and -12V via Mini DIN-7 connector
Gamma Detector
Crystal: 2” x 2" or 3” x 3” NaI; or 1” x 1” or 1.5” x 1.5” CeBr
Bias: Integral HV supply from 0 – 2000 V
Actual operating voltage calibrated to each detector
Connection: Input 1 – Series “C” connector
Input 2 – SHV connector (supply) and BNC connector (signal)
Neutron Detector (if present)
Type:
6
LiI or
3
He
Moderator: 1 cm polypropylene
Discriminator: Digital pulse shape and energy discrimination
Physical
Temperature: 32° - 122°F (0° to 50°C)
Weight: 391 grams (13.8 oz.)
Size: 157 x 90 x 44 mm (6.2 x 3.5 x 1.7in.)