Specifications

69
Track power events with a black
box recorder
If you are testing expensive proto-
types and a power related problem
damages or destroys your DUT, you
need to figure out what went wrong
to ensure it does not happen again.
The APS’s optional N7908A black
boxrecorder(BBR)overcomesthis
test challenge by creating a power
event record inside the power supply.
Much like an airplane flight data
recorder, the APS black box recorder
is always recording events. When
the power supply is on, it is always
running, recording power events
and making measurements in
non-volatile memory regardless
of what the power supply is doing
or how it is being used.
Examples of what it records:
• Voltage (min, max, and avg),
current (min, max, and avg),
and power (min, max, and avg)
• Trigger events
• Status bits
• Front panel and command events
• User defined tags
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
Number of outputs 1 1 1 1 1
GPIB, LAN, USB Yes Yes Yes Yes Yes
DC ratings
Voltage source 0 to 9 V 0 to 20 V 0 to 40 V 0 to 60 V 0 to 80 V
Current source 0 to 100 A 0 to 50 A 0 to 25 A 0 to 16.7 A 0 to 12.5 A
Current sink 10% rating -10 A -5 A -2.5 A -1.67 A -1.25 A
Current sink 100% rating
1
-100 A -50 A -25 A -16.7 A -12.5 A
Power
2
900 W 1000 W 1000 W 1000 W 1000 W
Output ripple and noise
3
CV rms 1 mV 1 mV 1 mV 1 mV 1 mV
CV peak to peak 9 mV 9 mV 9 mV 9 mV 9 mV
Load regulation
Voltage 0.5 mV 0.75 mV 1.5 mV 2 mV 2 mV
Current 8 mA 3 mA 1 mA 1 mA 0.8 mA
Voltage programming & measurement accuracy
4,5,6
Lead drop ≤1 V max 0.03% + 1 mV 2 mV 4 mV 6 mV 8 mV
Lead drop ≤25% of V rating 0.03% + 1.4 mV 3 mV 5.9 mV 9 mV 12 mV
Current programming & measurement accuracy
4
0.04% + 15 mA 8 mA 4 mA 2.5 mA 2mA
Current measurement low range accuracy
0.05% + 3 mA 1 mA 0.6 mA 0.3 mA 0.25 mA
Transient response
7
Recovery time 100 µs 100 µs 100 µs 100 µs 100 µs
Settling band 150 mV 150 mV 100 mV 150 mV 200 mV
Supplemental Characteristics (Non-warranted characteristics determined by design
that are useful in applying the product)
Programming range
Voltage 0.009 to 0.02 to 0.04 to 0.06 to 0.08 to
9.18 V 20.4 V 40.8 V 61.2 V 81.6 V
Current (no dissipator) -10.2 to -5.1 to -2.55 to -1.7 to -1.275
102 A 51 A 25.5 A 17 A 12.75 A
Current (with dissipator) -102 to -51 to -25.5 to -17 to -12.75 to
102 A 51 A 25.5 A 17 A 12.75 A
Programming resolution
Voltage 0.21 mV 0.42 mV 0.84 mV 1.25 mV 1.68 mV
Current 1.9 mA 0.95 mA 0.47 mA 0.32 mA 0.24 mA
Notes:
1
Current sinking up to 100% of rated current requires one power dissipator for 1 kW models, and two power
dissipators for 2 kW models. 2 kW models with one power dissipator can sink 50% of their rated current.
2
Maximum continuous power available is derated at 1% of rating per degree C from 40°C to 55°C
3
From 20 Hz to 20 MHz
4
At 23°C ±5°C after a 30 minute warm-up; measurement NPLC=1; valid for 1 year
5
With resistance programming enabled, the voltage programming offset component increases by a factor of 3.15
6
Load lead drop applies to each load lead
7
Time to recover to within the settling band following a load change from 50% to 100% of full load (10 µs rise time)