Wavelength Electronics QCL500 LAB, Руководство пользователя

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ELECTRICAL SPECIFICATIONS
DRIVER OUTPUT CURRENT MIN TYP MAX UNITS NOTES
Output Current 0.5, 1.0, 1.5, or 2.0 A
RMS Noise Current 0.4 1.0 1.3 μA RMS QCL1000 at 500 mA output, 100 kHz test bandwidth
Noise Current Density 1 2 4 nA / √Hz QCL1000 at 500 mA, 10 Ω test load
Stability, short and long term 5 10 15 ppm 25°C ambient
Temperature Coefficient 5 10 18 ppm / °C
Compliance Voltage Range 10 20 V
Internal Supply Voltage can be adjusted from the front
panel.
NOTE: With this current source, the voltage developed
across the load (laser) is not driven by the controller,
but by Ohm’s Law and the resistance of the load
(laser).
Slow Start Current Ramp (after
Enabled)
1.5 msec To setpoint
Delayed Start 2 sec User adjustable
EXTERNAL MODULATION MIN TYP MAX UNITS NOTES
Modulation Bandwidth 2 3 MHz Sinewave
Rise/Fall Time 250 / 200 nsec To full scale
Slew Rate 30 V / µsec
Depth of Modulation 90 % At 500 kHz
External Modulation Input
Range
-5 to +5 V
Input Impedance 1 kΩ
External Modulation Input
Damage Threshold
-10 to +10 V BNC Connector
MONITORS AND OUTPUTS VALUE UNIT NOTES
Setpoint Resolution 16 bits 5V = fullscale output
Display Accuracy Measurement
Resolution
24 Bits
Accuracy, Current Output
Monitor vs. Actual Current
(display or analog output)
0.2 % > 5% of full scale
0.5 % < 5% of full scale
Accuracy, Current Setpoint vs.
Actual Current
0.2 % Internal setpoint
0.2 % External modulation
Accuracy, Analog Setpoint
Monitor
1
5 % >10% of full scale
25 % <10% of full scale
1
Current Setpoint Monitor is a reference signal only, and may deviate from the actual setpoint by up to 5% when the setpoint is greater
than 10% of full scale.
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