xi
Analog Output
Range Switch Position 123456
Analog Output Full Scale:
1
2.000 V 2.000 V 2.000 V 2.000 V 2.000 V 2.000 V
Accuracy
(relative to display) 0.5% 0.5% 0.5% 0.5% 0.5% 0.5%
Bandwidth
2
Current Amplification 10 Hz 10 Hz 4 kHz 9 kHz 4 kHz 9 kHz
Voltage Amplification 15 Hz 15 Hz 15 Hz 15 Hz
Noise Floor
3,4,5
Current Amplification
0.1 Hz – 3 Hz <1 mV
p-p
<0.5 mV
p-p
<0.5 mV
p-p
<0.5 mV
p-p
<0.5 mV
p-p
<0.5 mV
p-p
0.1 Hz – 100 Hz <4 <0.5 <1.5 <0.5 <1.5 <0.5
0.1 Hz – 30 kHz <6 <1 <4 <1 <4 <1
Voltage Amplification
Accelerator Off
0.1 Hz – 3 Hz < 3 mV
p-p
<0.5 mV
p-p
< 0.5 mV
p-p
<0.5 mV
p-p
0.1 Hz – 100 Hz <25 <2 <1.5 <0.5
0.1 Hz – 30 kHz <30 <4 <4 <1
Accelerator On
6
0.1 Hz – 3 Hz < 80 mV
p-p
< 8 mV
p-p
< 8 mV
p-p
<1 mV
p-p
0.1 Hz – 100 Hz <120 <10 <10 <1
0.1 Hz – 30 kHz <120 <10 <10 <2
Output Impedance: 1 k ohm
1
CAL Factor = 1.00E+0
2
Bandwidth specifications for the current amplification mode were measured with an
818-SL detector.
3
Analog Output Noise Floor scales with the calibration factor in the following way:
Analog Output Noise Floor = (specified noise floor) × (calibration factor mantissa)
4
The specified values are representative of meter/detector system noise.
5
If the noise floor is greater than specified, see Section 3.3.2 (Quantum Detector Tempera-
ture Effects)
6
ACCEL ADJ fully clockwise (worst case)
Detector Responsivity Limits†:
Detector in Use Allowed Responsivities Allowed Calibration Factors
Low-Power 5.26E−2 to 1.11E+1 A/W 0.90E−1 to 19.00E+0 W/A
Low-Power with Attentuator 5.26E−5 to 1.11E−2 A/W 0.90E+2 to 19.00E+3 W/A
High-Power
Gain Position 3 5.26E−5 to 2.00E−3 V/W 5.00E+2 to 19.00E+3 W/V
1
Gain Position 4 5.26E−5 to 2.00E−3 V/W 5.00E+2 to 19.00E+3 W/V
1
Gain Position 5 5.26E−5 to 1.54E−3 V/W 6.50E+2 to 19.00E+3 W/V
1
Gain Position 6 5.26E−5 to 1.54E−4 V/W 6.50E+3 to 19.00E+3 W/V
1,2
1
If a calibration factor less than those specified is used, the internal electronics will
saturate before full scale readings are reached. For Newport detectors, electronic
saturation only occurs if the detectors are used well beyond their damage thresholds.
2
300 mV is the maximum input voltage allowed before the internal electronics saturate.
† These limits allow the use of compatible Newport detectors over their calibrated
operating ranges.
Zeroing Offset Dynamic Range: Covers the 4–5 highest gain decades.
Actual range varies with parameter settings.
Zero Drift: With CAL Factor = 1.00E+0 and range switch set to 20nW in current mode, the
display reads <1% of Full Scale over 12 hours at ± 2°F.
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