HP 8904A - Page 91

1-12 Meet the HP 8904A
How to Control
the Output
Port
With the HP 8904A, you can choose either a chassis ground or
a
floating ground circuit configuration. The floating ground
configuration allows
you to reference the HP 8904As ground to the
ground level of the input device that the HP
8904A is connected to.
You can also turn off the HP 8904A’s output path to completely
remove the output signal from the Output Port.
Figure 1-5 shows the HP 8904A’s Output Port LEDs. These LEDs
inform you of the current configuration statps of each Output Port.
THESE LEDs LET YOU KNOW
WHETHER OUTPUT PORTS
1 AND 2
ARE CONFIGURED FOR FLOATING
GROUND (LED ON)
OR CHASSIS
GROUND (LED
OFF).
THE HP-18 LEDs LET YOU KNOW THE
CURRENT STATUS OF THE HP 8904AS
REMOTE OPERATING CAPABILITIES.
WHETHER OUTPUT PORTS 1 AND 2
ARE TURNED ON (LED ON) OR
TURNED OFF (LED OFF).
Figure 1-5. The Front Panel LEDs Inform You of the
HP 8904A’s Current Output and HP-IB Operating Status.
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