4-2
Output
Two
Signals at Once
Adjust Your Oscilloscope
Display
............................................
Alternate
Volts/Division
.........................
1V
(Channels
A
and
B)
Coupling
................................
dc (High Impedance)
Time/Division
........................................
0.2
ms
Trigger
...........................................
Channel A
Select
Chassis
Ground
1.
Press the blue
SHIFT
key and the
PRESET
key on the HP
8904A.
Note that all four Output LEDs are lit
on
HI?
8904As
equipped
with Dual Output Ports.
2.
Press the blue
SHIFT
key and then the
FLOAT
key to access the
Output Float Control display.
HP
8904A's
circuit ground to chassis ground at Output
1.
3.
Press the
1
key and then the
OFF
key to reference the
4.
Press the blue
SHIFT
key and then the
FLOAT
key again.
5.
Press the
2
key and then the
OFF
key to reference the
HP
8904A's
circuit ground to chassis ground at Output
2
as
well.
(Note that the FLOAT LEDs for Outputs
1
and
2
are now
Off.)
6.
Adjust the Channel
A
trace on the oscilloscope to halfway
between the top and the middle
of
the display, and the
Channel
B
trace to halfway between the bottom and the
middle of the display.
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