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Specifications
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"RAINBOW" MCA, MODEL 7000

SMALL AND PORTABLE

LIVE TIME DISPLAY

LONG BATTERY LIFE

1024 CHANNELS

LOW COST

BUILT IN DISPLAY

INTERNAL OR EXTERNAL PREAMP/HV

FLEXIBLE DETECTOR CONNECTION

The model 7000 “Rainbow” Multi-Channel Analyzer is a low cost portable self contained MCA. It can be used in the field or the lab for both routine or emergency measurements. It offers all the usual features of most MCAs, including 1024 channels, dead time correction, digital gain, expanded scales and built in memory storage.

The Rainbow MCA was designed to combat the problems of 3 piece MCAs (small MCA, detector and laptop) in several ways. First, the instrument is ruggedly constructed for use in the field. Second, the battery life of the Rainbow is 100 hours, enough for several days use. Third, the unit is self contained, small, and lightweight; it only needs a detector. And fourth, the cost of the instrument is low.

The Rainbow has all the bells and whistles you would expect from a current MCA. It has 1024 channels rather that 256. The gain is digitally adjusted and can be changed from the front panel. The user friendly interface is through 7 pushbuttons. 5 of these are used as simple softkeys. The battery life is long and the electronics uses standard parts for easy maintenance now and in the future. A scintillation detector can be strapped to the top of the Rainbow to create a single package for easy carrying, storage or use. The switches and connectors are all guarded to protect them from damage.

The detector can be either of two types. The detector can have its own power supply and preamp, or it can rely on the optional removable high voltage power supply and preamp inside the Rainbow MCA. This enhances its versatility and helps to keep the costs down because it may be used with existing equipment, particularly scintillators that have been used with count rate meters.

The Rainbow MCA is a simple, sturdy instrument that is usable in many diverse areas. Its portability and compact size is particularly useful in field work and appreciated in the lab. For most users, it is the ideal solution for looking at radiation spectra.

Specification

Mechanical
Size: 9 1/2” L x 6” W x 1 7/8 “ H
Weight: 3.1 Lb.
Construction: Painted aluminum case with gasketed keyboard

Electrical
Display: 240 x 64 dot LCD with Contrast Adjustment
Keyboard: 7 pushbutton switches protected with silicone rubber gasket
Batteries: 3 D cells will operate instrument with detector for 100 hours. Low battery indication. Instrument will automatically turn off when batteries are too low for proper operation.
Internal Adjustments: LLD, ADC Zero, Pole Zero, Conversion Gain, HV (with HV/Preamp Board)
External Connectors: DB9 Connector for RS-232 Interface, DB9 Connector for External Detector, BNC Input for use with optional HV/Preamp Board
MCA
Channels: 1024
Counts/Channel: 65,535
Amplifier Gain: Adjustable in 4096 steps
ADC: Wilkinson type 14 MHz Clock
Conversion time: 10 us to 150 us
Maximum Count rate: >10,000 CPS

Operational
Modes: Acquire & view data, file data, setup
Compressed and expanded display
LIVE TIME display
Background subtraction
Dead time correction w/bargraph
Region of interest
Storage: 12 ea. 1024 channel spectra

Detector
General Arrangement: The Rainbow MCA can accept 4 different types of detector arrangements. 1) Output from external preamp/HV 2) Output from external preamp, amp/hv 3) For scintillators, the optional preamp/HV circuit board can be internally mounted inside the Rainbow MCA. This provides adjustable high voltage and preamp gain/shaping. The scintillation probe then plugs into the BNC on the MCA. 4) The HPI Scintillation Probe with built in high voltage and preamp.

Environmental
Temperature Range: 0°C to 50°C
Storage Temperature: -20°C to 60°C

Options/Equipment
Options: Internal HV/Preamp Board with High voltage power supply and preamp for scintillation detectors, Scintillation Probe, Scintillation Probe W/ Preamp and HV, cable, shoulder strap, repair manual
Equipment: Supplied w/ manual, batteries, Hand Strap
   
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Specifications subject to change without notice.
Far West Technology, Inc. © 2003 Fax: +1.805.964.3162 Tel: +1.805.964.3615 Email: info@fwt.com