User`s guide

16
662xA to N672xA Comparison Sheet
Current Model
Specifications 40 W Low 40 W High 80 W Low 80 W High 25 W 50 W
(at 0° to 55°C unless otherwise specified)
Voltage Voltage Voltage Voltage Precision Precision
Output Output Output Output Output Output
Output Power Low range 0 to 7 V, 0 to 20 V, 0 to 7 V, 0 to 20 V, 0 to 7 V, 0 to 16 V,
volts, amps 0 to 5 A 0 to 2 A 0 to 10 A 0 to 4 A 0 to 15 mA 0 to 200 mA
High range 0 to 20 V 0 to 50 V 0 to 20 V 0 to 50 V 0 to 50 V, 0 to 50 V, 0 to 1 A or
volts, amps 0 to 2 A 0 to 0.8 A 0 to 4 A 0 to 2 A 0 to 500 mA 0 to 16 V, 0 to 2 A
Output Combination
for each model
(total number
6621A (2) — — 2 — — —
of outputs)
6622A (2) — — — 2 — —
6623A (3) 1 1 1 — — —
6624A (4) 2 2 — — — —
6625A (2) Precision — — — — 1 1
6626A (4) Precision — — — — 2 2
6627A (4) — 4 — — — —
6628A (2) Precision — — — — — 2
6629A (4) Precision — — — — — 4
Programming Accuracy
Voltage 19 mV 50 mV 19 mV 50 mV 1.5 mV + 0.016% (low) 3 mV + 0.016% (low)
(at 25°C ±5°C) + 0.06% + 0.06% + 0.06% + 0.06% 10 mV + 0.016% (high) 10 mV + 0.016% (high)
Current 50 mA 20 mA 100 mA 40 mA 15 µA + 0.04% (low) 185 µA + 0.04% (low)
+ 0.16% + 0.16% + 0.16% + 0.16% 100 µA + 0.04% (high) 500 µA + 0.04% (high)
Readback Accuracy
Voltage 20 mV 50 mV 20 mV 50 mV 2 mV + 0.016% (low) 3.5 mV + 0.016% (low)
(at 25°C ±5°C) + 0.05% + 0.05% + 0.05% + 0.05% 10 mv + 0.016% (high) 10 mv + 0.016% (high)
+ Current 10 mA 4 mA 20 mA 8 mA 15 µA + 0.03% (low) 250 µA + 0.04% (low)
+ 0.1% + 0.1% + 0.1% + 0.1% 130 µA + 0.03% (high) 550 µA + 0.04% (high)
- Current 25 mA 8 mA 50 mA 20 mA 15 µA + 0.03% (low) 250 µA + 0.04% (low)
+ 0.2% + 0.2% + 0.2% + 0.2% 130 µA + 0.03% (high) 550 µA + 0.04% (high)
Ripple and noise Constant Voltage rms 500 µV 500 µV 500 µV 500 µV 500 µV 500 µV
(rms, 20 Hz to 10 MHz; peak-to-peak 3 mV 3 mV 3 mV 3 mV 3 mV 3 mV
peak-to-peak,
20 Hz to 20 MHz)
Constant Current rms 1 mA 1 mA 1 mA 1 mA 0.1 mA 0.1 mA
Load regulation Voltage 2 mV 2 mV 2 mV 2 mV 0.5 mV 0.5 mV
Current 1 mA 0.5 mA 2 mA 1 mA 0.005 mA 0.01 mA
Load cross regulation Voltage 1 mV 2.5 mV 1 mV 2.5 mV 0.25 mV 0.25 mV
Current 1 mA 0.5 mA 2 mA 1 mA 0.005 mA 0.01 mA
Line regulation Voltage 0.01% 0.01% 0.01% 0.01% 0.5 mV 0.5 mV
+ 1 mV + 1 mV + 1 mV + 1 mV
Current 0.06% 0.06% 0.06% 0.06% 0.005 mA 0.01 mA
+ 1 mA + 1 mA + 1 mA + 1 mA
Transient response time <75 µs < 75 µs <75 µs <75 µs <75 µs <75 µs
Time for the output to recover to within 75 mV of nominal
value following a load change within specifications
Supplemental Characteristics (Non-warranted characteristics determined by design and useful in applying the product)
Average programming Voltage 6 mV 15 mV 6 mV 6 mV 460 µV (low) 1 mV (low)
resolution 20 mV(high) 20 mV(high) 3.2 mV (high) 3.2 mV (high)
Current 25mV 10 mA 50 mA 50 mA 1 µA (low) 13 µA (low)
20 mA(high) 20 mA(high) 33 µA (high) 131 µA (high)
OVP Programming Accuracy 100 mV 250 mV 100 mV 50 mV 230 mV 230 mV
Command Processing Time (over GPIB) 7ms 7 ms 7 ms 7 ms 7 ms 7 ms
Interfaces GPIB
Size 425.5 mm Width x 132.6 mm Height x 497.8 mm Depth
Appendix A