Bio-Rad CHEF Mapper® XA System - Manual (Page 6)

Interactive computer algorithm for full optimization of electrophoresis conditions requires
PC 80386 or compatible, with Microsoft Windows ® 3.1. Buffer type, buffer concentration,
agarose concentration and type, and buffer temperature, can be varied as inputs.
Power Module
Dimensions 34.5 (depth) x 55.9 (width) x 30.5 (height) cm
Construction Aluminum chassis
Weight 16 kg
Power supply 350 V maximum, to allow maximum gradient of 9 V/cm,
continuously adjustable; built in
Maximum current 0.5 amperes
Allowable voltage gradients 0, and 0.6–9 V/cm, in 0.1 V/cm increments
Battery back up All parameters in memory, up to 3 hr of interruption
Delayed start Up to 72 hr
Electrode potentials Dynamically regulated (feedback adjustment) +/- 0.5% F.S.
Program storage 20 average protocols
Display Fluorescent, 2 lines x 40 characters per line, alpha-numeric
Environmental
Operating 50 °F (10 °C) to 90 °F (32 °C) temperature 30-80%
humidity
Storage 32 °F (0 °C) to 140 °F (60 °C) temperature 10-90%
humidity
Switching Functions
Switching range 50 msec to 18 hr
Switch angle variable 0–360 degrees (all electronic switching) in 0.5° increments
Multistate vector switching Up to 15 vectors per pulse cycle, each definable by angle,
voltage, and duration
Switch time ramps Linear, concave, or convex using hyperbolic function
Secondary pulses Defined by voltage, frequency, angle, and duration
Field inversion (FIGE) Available with asymmetric forward, reverse voltages
Maximum program blocks 8, with automatic execution
Maximum run time 999 hours per block
Fuses 3 Amp Slo-Blo; two each for AC line input
0.5 Amp Fast Blo for high voltage output
Electrophoresis Cell
Dimensions 11.4 (h) x 44.2 (w) x 50.3 (d) cm, horizontal format
Construction Cover Vacuum formed polycarbonate
Base Injection molded polycarbonate
Lid Safety interlocked
Weight 10.2 kg
Electrodes 24, platinum (0.02 inch diameter)
Temperature monitoring via precision temperature probe mounted in base of cell
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