Specifications

More detailed specifications at www.agilent.com/find/N7900
73
With the APS you do not have to
worry about this since it has built-in
paralleling capability that ensures
each supply equally shares the load
current so they all remain in the
desired mode, whether it is CV or
CC. Note that paralleling works
whether the APS power supplies
are sourcing or sinking current
from the DUT.
To take advantage of the APS
paralleling capability, you need
only a simple three-wire connection
in the rear of the supplies in the
parallel configuration (see figure 6).
With this capability, you can
parallel up to five APS power
supplies (recommended), which
provides a max power of 10 kW.
Single Output: 1 & 2 KW GPIB, LAN (LXI Core), USB
(Continued)
Specifications
(at 0° to 55°C unless
otherwise specified)
Advanced Power System DC power supplies overcome the toughest power test challenges
N7970A N7971A N7972A N7973A N7974A
Supplemental Characteristics (Non-warranted characteristics determined by design
that are useful in applying the product)
Current measurement range
High range -450 to -225 to -112.5 to -74.9 to -56.2 to
450 A 225 A 112.5 A 74.9 A 56.2 A
Low range -22 to -11 to -5.5 to -3.67 to -2.75 to
22 A 11 A 5.5 A 3.67 A 2.75 A
Resistance programming
Range 0 to 0.05 Ω 0 to 0.2 Ω 0 to 0.8 Ω 0 to 1.7 Ω 0 to 3.2 Ω
Accuracy
1
0.06% + 1.6 mΩ*A 3.2 mΩ*A 6.4 mΩ*A 8.8 mΩ*A 12.8 mΩ*A
Resolution 0.4 µΩ 1.7 µΩ 7 µΩ 15 µΩ 27 µΩ
Temperature coefficient 0.0043% 0.0045% 0.0049% 0.0046% 0.0045%
Programming & measurement temperature coefficient
Voltage
2
0.0022% + 30 µV 60 µV 120 µV 180 µV 220 µV
Current
2
0.0029% + 0.0031% + 0.0035% + 0.0032% + 0.0032% +
500 µA 250 µA 120 µA 80 µA 60 µA
Current measurement low range temperature coefficient
2
0.0040% + 0.0041% + 0.0045% + 0.0042% + 0.0041% +
160 µA 80 µA 40 µA 24 µA 18 µA
Over-voltage protection
Maximum setting 10.8 V 24 V 48 V 72 V 96 V
Accuracy 0.03% + 1 mV 2 mV 4 mV 6 mV 8 mV
Response time
3
<30 µs <30 µs <30 µs <30 µs <30 µs
Measurement noise (peak)
Voltage 2 mV 3.5 mV 7 mV 10 mV 14 mV
Current 75 mA 45 mA 18 mA 12 mA 7 mA
Current - low range 50 mA 30 mA 12 mA 6 mA 3 mA
Output current noise
CC rms 20 mA 20 mA 15 mA 15 mA 15 mA
Common mode current
CC rms 2 mV 1 mV 1 mV 1 mV 2 mV
CC peak-to-peak 15 mA 10 mA 10 mA 10 mA 10 mA
Notes:
1
Resistance programming accuracy varies with output current. For example, for an N7970A unit at 0.1 Ω
with a 50 A transient, accuracy is: (0.1 Ω*0.06%) + (1.6 mΩ*A/50 A) = 92 µΩ.
2
Per degree C
3
From occurrence of over-voltage to start of shutdown
Figure 6. An APS supply’s three-wire connection
for paralleling multiple supplies