Specifications

70
Avoid damage to your DUT with
APS protection
When you are testing costly DUTs,
integrating power protection mea-
sures into the test system is critical.
Using instrumentation with built-in
protection features provides a huge
benefit when DUT protection is
required. Here’s why:
• Built-inprotectionfeatures,such
as broken sense line detection,
reduce the amount of protection
hardware needed in the test
system reducing complexity
and development time.
•
With protection features integrated
into the instrumentation, the
amount of hardware needed
for the test system is reduced,
which in turn lowers test system
support costs.
• With protection measures imple-
mented in hardware rather than
test system software, error
conditions can be detected and
handled much faster, reducing
the likelihood of the DUT
sustaining major damage.
Single Output: 1 & 2 KW GPIB, LAN (LXI Core), USB
(Continued)
Specifications
(at 0° to 55°C unless
otherwise specified)
More detailed specifications at www.agilent.com/find/N7900
Advanced Power System DC power supplies overcome the toughest power test challenges
N7950A N7951A N7952A N7953A N7954A
Supplemental Characteristics (Non-warranted characteristics determined by design
that are useful in applying the product)
Current measurement range
High range -225 to -112.5 to -56.2 to -37.6 to -28.1 to
225 A 112.5 A 56.2 A 37.6 A 28.1 A
Low range -11 to -5.5 to -2.75 to -1.84 to -1.37 to
11 A 5.5 A 2.75 A 1.84 A 1.37 A
Resistance programming
Range 0 to 0.1 Ω 0 to 0.4 Ω 0 to 1.6 Ω 0 to 3.4 Ω 0 to 6.4 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 0.8 µΩ 3.4 µΩ 13 µΩ 30 µΩ 54 µΩ
Temperature coefficient 0.0046% 0.0049% 0.0054% 0.0050% 0.0049%
Programming & measurement temperature coefficient
2
Voltage 0.0022% + 30 µV 60 µV 120 µV 180 µV 220 µV
Current 0.0035% + 0.0035% + 0.0042% + 0.0037% + 0.0036% +
250 µA 125 µA 60 µA 40 µA 30 µA
Current Measurement 0.0042% + 0.0045% + 0.0050% + 0.0046% + 0.0045% +
low range 80 µA 40 µA 20 µA 12 µA 9 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 45 mA 22 mA 10 mA 6 mA 4 mA
Current - low range 30 mA 17 mA 7 mA 4 mA 2 mA
Output current noise
CC rms 15 mA 15 mA 15 mA 15 mA 15 mA
Common mode current
CC rms 2 mA 1 mA 1 mA 1 mA 1.5 mA
CC peak-to-peak 10 mA 10 mA 10 mA 10 mA 10 mA
Voltage up-programming time
4
10% to 90% 0.5 ms 0.5 ms 0.5 ms 0.5 ms 0.5 ms
Settling time
6
1 ms 1 ms 1 ms 1 ms 1 ms
Voltage down-programming time
5
90% to 10% 0.35 ms 0.35 ms 0.35 ms 0.35 ms 0.35 ms
Settling time
6
0.8 ms 0.8 ms 0.8 ms 0.8 ms 0.8 ms
Current up-programming time
7
10% to 90% 2.5 ms 2.5 ms 2.5 ms 2.5 ms 2.5 ms
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
4
With full resistive load and a voltage transition from 0.1% to 100% of rated output
5
With no load and a voltage transition from 100% to 0.1% of rated output
6
From start of voltage change to within 0.1% of final full scale value
7
With full resistive load and a current transition from 0.1% to 100% of rated output