Specifications

68
Continuously source and sink current
for power storage test applications
When operated as standalone units,
APS power supplies can continuously
sink up to 10% of their rated output
current for an indefinite time. With
the addition of APS N7909A power
dissipater units, APS power supplies
can continuously sink up to 100% of
their rated output current. This means
you can sink the power supply’s full
rated output power for an indefinite
time. Note that the two-quadrant
sourcing and sinking capability
of the DC power supply allows for
continuous transitions between
sourcing and sinking current with-
out changing the power supply’s
output characteristics or introduc-
ing any disruptive behavior. These
capabilities make the APS an ideal
solution for continuous source and
sink testing needs in power storage
applications (see figures 2 and 3).
To compliment the two quadrant
operation, all APS power supplies
have built-in programmable output
resistance capability. This capability
allows an APS power supply to
simulate the internal resistance
of a battery.
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/N6900
Advanced Power System DC power supplies overcome the toughest power test challenges
N6970A N6971A N6972A N6973A N6974A
Supplemental Characteristics (Non-warranted characteristics determined by design
that are useful in applying the product)
Volt up-programming time
4
10% to 90% 3 ms 3 ms 3 ms 3 ms 3 ms
Settling time
6
10 ms 10 ms 10 ms 10 ms 10 ms
Volt down-programming time
5
90% to 10% 3 ms 3 ms 3 ms 3 ms 3 ms
Settling time
6
10 ms 10 ms 10 ms 10 ms 10 ms
Current up-programming time
7
10% to 90% 2.5 ms 2.5 ms 2.5 ms 2.5 ms 2.5 ms
Output-on delay time
Voltage priority 12 ms 12 ms 12 ms 12 ms 12 ms
Current priority 14 ms 14 ms 14 ms 14 ms 14 ms
Line regulation
8
Voltage < 10 µV < 10 µV < 10 µV < 10 µV < 10 µV
Current < 10 µA < 10 µA < 10 µA < 10 µA < 10 µA
Notes:
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
8
Line regulation is guaranteed by design
Figure 2. Adding N7909A power dissipater units
to an APS supply extends its ability to sink
current from 10% to 100% of its rated current
Figure 3. Shows an example of an APS power
supply smoothly pulsing back and forth from
sinking current at -10 A to sourcing current
at 10 A. The voltage level captured at high
resolution on the top trace remains constant
with no glitches.