Bk Precision BK-8500 Electronic Load 1 mA - 30 A 0.1 - 120 Vdc 0 - 300 W BK-8500 Hoja De Datos
Los códigos de productos
BK-8500
modes, mode parameters, and durations. They are useful for executing a set of tests on a device,
then displaying whether the tests passed or failed. We will illustrate how to use test files by a short
example.
Suppose we have a small AC to DC power supply (a "wall-wart") and we want to set up an
acceptance test for a number of these devices. Our test will consist of two steps:
then displaying whether the tests passed or failed. We will illustrate how to use test files by a short
example.
Suppose we have a small AC to DC power supply (a "wall-wart") and we want to set up an
acceptance test for a number of these devices. Our test will consist of two steps:
1. Set the DC load to constant current mode to draw the rated current of 0.35 A from the
device. The output voltage of the device at the rated current must be between 4.4 volts and
4.6 volts.
4.6 volts.
2. When the device operates into a short, the supplied current must be larger than 2.0 A.
Keys
Display
Shift + Menu
:CONFIG
▽ ▽
:LIST SET
Enter
:MODE SET
▽ ▽ ▽ ▽
:EDIT TEST FILE
Enter
MAX CURR= 3.000A
Set the maximum current to 2.5 A
2.5 Enter
MAX VOLT= 18.00V
Set the maximum voltage to 5 V
5 Enter
MAX POWER= 150.00W
Set the maximum power to 15 W
15 Enter
TEST COUNT= 6
Our test will consist of two steps, so we enter 2. You
can enter up to 20 steps.
2 Enter
CONST CURRENT
Since our first test is in constant current mode, we'll
just press Enter to select this mode.
Enter
SET 1= 0.210A
This is the prompt for the constant current value. We set
it to 0.35 A.
.35 Enter
SHORT OFF
We can turn a short on or off at this step. Here, we want
short off, so we just press Enter.
Enter
READBACK V
We're being prompted for what parameter to read back
and check. We want voltage, so we press Enter.
Enter
MIN 1= 5.80V
We want the minimum voltage read back to be at least 4.4
V.
4.4 Enter
MAX 1= 6.15V
The maximum value we'll allow is 4.6 V.
4.6 Enter
DELAY 1= 1.0<S>
This delay time is how long to wait before making the
readback measurement. If you set it to 25.5 seconds, the test will halt at
this point, requiring you to press Shift + Trigger to continue the test. We'll
use 1 second.
this point, requiring you to press Shift + Trigger to continue the test. We'll
use 1 second.
1 Enter
CONST CURRENT
We're being prompted for the mode to use for the
next step. We'll again use constant current, so we'll press Enter (this step
will also be a short, so the mode doesn't really matter).
will also be a short, so the mode doesn't really matter).
Enter
SET 2= 5.000A
We'll set the current to 2.5 A, which is the maximum
current we've allowed for this test..
8500 DC Load Series
Version: September 2, 2009
Page 38 of 76