Model 702i and 711i
Technical Manual
Section 4
Ludlum Measurements, Inc.
4-1
December 2018
Specifications
Preamplifier
Type:
Charge Sensitive
Input:
Negative Current (anode)
ADC
Type:
14-bit pipelined
Speed:
50 MHz
Pulse Processing
Type:
Digital, Trapezoidal Shaping
Peaking times:
40 ns to 5.1 µs, factory set to 1.28 µs
Gain:
Digital, 0.25x to 16x
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 – 256, 512, 1024 Channels
QCC – 256, 512 Channels (U.S. Patent 5,608,222)
Note:
If you are using the instrument without a PC, operation is limited to
256 and 512 QCC, including the saving of spectra. However, while
under control of Quantum software, all ADC modes (including 1024
linear) are available.
System Controller
Processor:
PPC405 CPU at 50 MHz
Display:
320 x 240 high contrast 32,000 color display with LED backlight
Controls:
7-key custom keypad
I/O:
RJ-45 Ethernet port for computer connection
ENP3 series watertight connector for power and other functions
Clock:
Battery backed-up clock/calendar
Section
4
