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 75
Pin Reference Function
J1.15 EXT_CC_CV External CC/CV. Indicates the state of the operate mode. When in
CV mode, logic high is output and when in CC mode, logic low is
output. Logic is TTL/CMOS compatible.
J1.16 CSH Current Share. Used to hook up units for current sharing. Output
from master unit. Slave units should be left open.
J1.17 REF_I Current Reference Input. Slave input from current share output on
the master unit.
J1.18 NC
1
Important: Non-isolated monitor lines are only valid in local control, digital remote and non-isolated analog
programming modes for the respective voltage and current control. If isolated analog programming is used, the
isolated monitor lines should be used as the non-isolated monitoring lines will not accurately reflect the output state of
the power supply.
Making Control Connections
CAUTION: Equipment damage
Before making connections from external circuits to the Analog Programming
Connector, turn the front panel power switch to Off and wait until the front
panel displays are not illuminated.
CAUTION: Equipment damage
Program/monitor signal and return are internally connected to the power supply
negative output (-S). Do not attempt to bias these away from that potential.
To connect the output wires to the APG and DC output connector:
1. Insert a 3/32 inch slot-head screwdriver into the orange-colored box of the
connector until the end of the spring is reached.
2. Hold the connector open and insert the applicable output wire.
3. Remove the screwdriver.
Figure 20: Inserting Screwdriver into Spring Terminal Block
Figure 21: APG and DC Output Connector