Trek 156A, Руководство оператора

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Initial Setup Connections
Before operating the Model 156A, the following connections should be made:
Ground Connection
The Model 156A must be connected to a solid ground reference to ensure accurate
and repeatable measurements. All voltage measurements will be made with respect to
this ground reference point. The power to the unit should be OFF when connecting
the ground on the rear panel of the unit to a ground reference.
Ion Collecting Plate Connection
Ensure that the power to the unit is OFF when connecting the plate cable to the
ION COLLECTING PLATE receptacle on the rear panel.
Note:
Hazardous voltages may exist in the plate receptacle if the power to the unit is
ON. See warning below under OUTPUT MONITOR CONNECTION.
Output Monitor Connection
Warning:
Exercise extreme caution while connecting a BNC connector cable to the
OUTPUT MONITOR BNC receptacle. Do not confuse the OUTPUT MONITOR
BNC cable connector for the ION PLATE BNC cable connector. Inserting the
OUTPUT MONITOR connector into the ION PLATE connector could deliver a
voltage of 1100 volts to the BNC shell.
The OUTPUT MONITOR connector on the rear panel is a buffered output providing
a low-voltage replica of the voltage on the ion collecting plate.
The voltage at this output represents 1/200th the voltage on the ion collecting plate.
Connect a monitoring device, such as an oscilloscope, to this connector to monitor
the voltage on the ion collecting plate. The signal at this connector can also be used
as a feedback signal in a closed-loop system.
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Installation