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General Information 16
Table 1-1a. Performance Specifications for Series 664xA
1
Parameter Agilent Model Number
6641A 6642A 6643A 6644A 6645A
Output Ratings
Voltage:
0 - 8 V 0 - 20 V 0 - 35 V 0 - 60 V 0 - 120 V
Current:@ 40°
°°
°C
0 - 20 A 0 - 10 A 0 - 6 A 0 - 3.5 A 0 - 1.5 A
Current:@ 50°
°°
°C
0 - 18 A 0 - 9 A 0 - 5.4 A 0 - 3.2 A 0 - 1.4 A
Current:@ 55°
°°
°C
0 - 17 A 0 - 8.5 A 0 - 5.1 A 0 - 3.0 A 0 -1.4 A
Programming Accuracy (@ 25 ± 5 °C)
Voltage:
2
0.06% +
5 mV
10 mV 15 mV
26 mV 51 mV
Current: 0.l5 % +
26 mA 13 mA
6.7 mA
4.1 mA
1.7 mA
Ripple & Noise (from 20 Hz to 20 MHz with outputs ungrounded, or with either output terminal grounded)
Constant Voltage: rms
300 µV 300 µV 400 µV 500 µV 700 µV
Constant Voltage: p-p
3 mV 3 mV 4 mV 5 mV 7 mV
Constant Current: rms
10 mA
5 mA 3 mA 1.5 mA 1 mA
Readback Accuracy (from front panel or over GPIB with respect to actual output @ 25 ±:5 °C)
Voltage:
2
0.07% +
6 mV 15 mV 25 mV 40 mV 80 mV
+Current 0.15% +
18 mA 9.1 mA 5 mA 3 mA 1.3 mA
-Current 0.35% +
40 mA 20 mA 12 mA 6.8 mA 2.9 mA
Load Regulation (change in output voltage or current for any load change within ratings)
Voltage
1 mV 2 mV 3 mV 4 mV 5 mV
Current:
1 mA 0.5 mA 0.25 mA 0.25 mA 0.25 mA
Line Regulation (change in output voltage or current for any line change within ratings
Voltage:
0.5 mV 0.5 mV 1 mV 1 mV 2 mV
Current:
1 mA 0.5 mA 0.25 mA 0.25 mA 0.25 mA
Transient Response Time (for the output voltage to recover to its previous level (within 0.1% of the rated voltage or
20 mV, whichever is greater) following any step change in load current up to 50% of the rated current.
< 100 µs
AC Input Ratings (selectable via internal switching - see Appendix C)
Nominal line voltage:
Frequency:
100, 120, 220, 240 Vac (-13%, +6 %)
230 Vac
3
(-10%, +10%)
50/60 Hz
Output Terminal Isolation
±240 Vdc (maximum, from chassis ground)
Notes:
1
For Supplemental Characteristics, see Table 1-1b.
2
Specification may degrade slightly when unit is subjected to an RF field ≥ 3V/meter.
3
For 230Vac operation, unit is internally set to 240Vac