Specifications

Performance Verification 2
Series N6700 Service Guide 17
3 Set the N6784A that is being used as the load as follows:
a. Emulation Mode = CC Load (in current priority mode)
b. + Voltage limit = 6.12 V
c. Current Slew setting:
N678xA: Maximum (the default)
N6783A: 67500 A/s (for a pulse rise/fall time of 20 µs)
d. Arb = Current Pulse
e. Load pulse properties:
N678xA: I
0
= −0.1 A; I
1
= −1.5A; T
0
= 1ms; T
1
= 1ms; T
2
= 1ms
N6783A: I
0
= −0.15A; I
1
= −1.5A; T
0
= 0.5ms; T
1
= 0.5ms; T
2
= 0.5ms
f. Continuous = ON
g. Press Arb run.
4 Adjust the oscilloscope for a waveform similar to that shown in
the following figure.
5 The output voltage should return to within the specified voltage
at the specified time following the 50% load change. Check both
loading and unloading transients by triggering on the positive
and negative slope. Record the voltage at time “t” in the
performance test record form under “Transient Response”.
6 For models N678xA SMU only. Repeat steps 3 through 5 for the
20 V range. Program the instrument settings as described on the
test record form under “Transient Response 20 V”. Change the
settings of the N6784A that is being used as the load as follows:
b. + Voltage limit = 20.4 V
e. Load pulse properties:
N678xA: I
0
= −0.1 A; I
1
= −0.9A; T
0
= 1ms; T
1
= 1ms; T
2
= 1ms
Auxiliary Voltage Measurement Accuracy (N6781A only)
Test category = performance
This test verifies the auxiliary voltage measurement accuracy.
1 Turn off the power system and connect the external DMM and an
external power supply to the auxiliary voltage inputs (see Test
Setup E).
2 Turn on the external power supply and set the output to 20 volts.
Turn on the power system. In Meter View, select Properties, and
then select the Aux Voltage measurement input.
3 Record the external DMM reading and the auxiliary DVM
readings. The auxiliary voltage reading should be within the
designated voltage limit indicated in the test record form under
“Auxiliary Voltage Readback”.
4 Reverse the leads of the external power supply and repeat step 3.
tttt
t
v
Loadi ng
Tr ansi ent
Unl oadi ng
Tr ansi ent
v
t