Tektronix Keithley 2268 Series, Справочное руководство

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Series 2268 850 Watt DC Power Supplies Reference Manual Analog Programming & Isolated Analog Programming
2268S-901-01 Rev. A / January 2015 73
REMOTE PROGRAMMING OPTIONS
Analog Monitor Signals
There are four monitor lines for analog programming the pin name and the related APG
mode, which are listed in the table that follows. All of these lines are provided to give analog
feedback. The output from these monitor lines is a value scaled to the Analog Programming
level set for the corresponding analog programming type. For example, the voltage monitor
and isolated voltage monitor lines are both scaled to the analog programming level that is set
in the VAP mode.
Related APG Mode Reference Line
Name Connector
Non-Isolated Voltage Analog Programming VOL_MON J1.13
Isolated Voltage Analog Programming IS_MON_VOL J3.5
Non-Isolated Current Analog Programming CUR_MON J1.14
Isolated Current Analog Programming IS_MON_CUR J3.10
Important:
Analog control monitor lines will reflect the output of the power
supply even when the unit is not set to operate in analog programming mode.
Important:
Isolated monitor lines are only valid when isolated analog
programming modes are used for the respective voltage and current control. If
local (front panel) control is used or non-isolated APG is used, these values will
be inaccurate and should not be used for monitoring. Conversely, if isolated
APG is used, the non-isolated monitor lines will be inaccurate.
Auxiliary Outputs
The auxiliary outputs are an additional isolated source. The auxiliary output has two outputs:
+5 V output on J3.9 and a +15 V output on J3.11. The auxiliary output operates
independently of the main output. It is enabled or disabled from the front panel by pressing
the OUTPUT ENABLE Aux button. When the Aux output is enabled, the OUTPUT
ENABLE Aux button is illuminated. Like the main output of the power supply, the Aux also
has the ability to Autostart at power up. See “Output Auto Start Mode (Auto Restart)” on
page 42 and “Auxiliary Auto Start Mode” on page 43 for details on controlling this feature.
The table that follows provides a summary of the options available for programming output
voltage and current set point using an analog source.
Control of... Programming Scale
1
For more info…
Output voltage 2-10 V Voltage source (adjustable) See page 77.
Current set point 2-10 V Voltage source (adjustable) See page 79.
Output voltage 2-10
kΩ Resistive source (adjustable)
See page 82.
Current set point 2-10
kΩ Resistive source
(adjustable) See page 84.
1. The resolution can be adjusted in increments of 0.1 volts.