American Magnetics 420 Power Supply Programmer - Manual (Page 25)

Rev. 7 7
Introduction
Specifications
1.4 Model 420 Specifications @ 25 °C
Additional Specifications for all Configurations
Magnet Current
Control Parameters
Standard Model 420 Configurations: Programmable Limits
±
5 A
±
10 A
±
100 A
±
200 A
±
300 A
±
600 A
±
2000 A
Measurement Resolution: 10
µ
A 20
µ
A 0.2 mA 0.4 mA 0.6 mA 1.2 mA 4.0 mA
Accuracy (% of I
max
): 0.1% 0.1% 0.1% 0.1% 0.1% 0.005% 0.005%
Minimum Ramp Rate: 10 µ A/min 10 µ A/min 0.1 mA/min 0.1 mA/min 0.1 mA/min 1 mA/min 1 mA/min
Maximum Ramp Rate: 1 A/sec 1 A/sec 10 A/sec 20 A/sec 30 A/sec 60 A/sec 100 A/sec
Magnet Current Control
Temperature Coefficient: 0.01% of I
max
/ °C
Stability: Better than 0.01% (40 min. warm-up)
Programming Resolution: 15 digits
a
Ramp Rate Resolution: 15 digits
Nominal Load Inductance Range: 0.5 to 100 Henries
Program Out Voltage
Programmable Limits:
−
10 to +10 VDC (voltage-voltage mode)
Accuracy: 0.1% of V
max
Temperature Coefficient: 0.005% of V
max
/ °C
Resolution: 20
µ
V
Stability: Better than 35 mV P-P when paused or holding
Magnet Voltage Measurement
Maximum Limits:
−
20 to +20 VDC
Accuracy: 0.1%
Temperature Coefficient: 0.01% of V
max
/ °C
Resolution: 10 mV
Persistent Switch Heater Output
Programmable Limits: 0.1 to 100 mA DC
Accuracy: 0.5 mA
Temperature Coefficient: 0.02 mA / °C
Maximum Compliance: 13.5 V
Resolution: 0.1 mA
Optional External Supply Limits: 10 VA, 0.5 A max, 100 VDC max