Tektronix PWS4205, Programmer'S Manual

Page: 67 / 90

Status and Events
The Operation Condition Register (OCR).
The Operation Condition Register is
made up of eight bits, which note the occurrence of events as shown here.
Figure 3-4: The Operation Condition Register (OCR)
Table 3-3: OCR bit functions
Bit Function
7 (MSB)
———— This bit is not used.
6
———— This bit is not used.
5 RUN
Running List.
Indicates that the power supply is
executing a list.
4 TBF
Trace Buffer Full.
This bit is used internally, by
the instrument.
3 CC
Constant Current.
Indicates that the power supply is
in constant current mode and is regulating its output current.
2 CV
Constant Voltage.
Indicates that the power supply is
in constant voltage mode and is regulating its output voltage.
1 WTG
Waiting for Trigger.
Indicates that the power
supply is waiting for a trigger.
0 (LSB) CAL
Calibrating.
Indicates that the power supply is
calculating a new calibration parameter.
The Operation Event Register (OEVR).
The Operation Event Register has the same
content as the Operation Condition Register.
The Questionable Condition Register (QCR). The Questionable Condition Register
is made up of eight bits which note the occurrence of fi ve types of events as
shown here.
Figure 3-5: The Questionable Condition Register (QCR)
Table 3-4: QCR bit functions
Bit Function
7 (MSB)
———— This bit is not used.
6
———— This bit is not used.
5
———— This bit is not used.
4 PS
Protection Shutdown.
3 RI
Remote Inhibit.
This bit indicates the state of the
Remote Inhibit input.
PWS4205, PWS4305, PWS4323, PWS4602, and PWS4721 Power Supply Programmer Manual 3-5