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Figure 3-20 also shows that if the error/event queue is not empty, bit 3 is set in the Service
Request register and bit 4 indicates that a message is available in the output buffer.
3.6.7.2
OPERATIONAL STATUS REGISTER
The OPERational condition register contains conditions which are a part of the instrument's nor-
mal operation. The definition of each of these bits (condition register) is as follows:
•
0 through 4 - Not Used — always zero.
•
5 - Waiting for Trigger — 1 indicates the trigger system is enabled. If trigger source is
•
6 - Transient Armed — 1 indicates the transient function is enabled,
•
7 - Not Used — always zero.
•
8 - Constant Voltage — 1 indicates the instrument is in constant voltage mode.
•
9 - Transient Complete — 1 indicates transient has been completed. Not readable in
•
10 - Constant Current — 1 indicates the instrument is in constant current mode.
•
11 - Sample Complete — 1 indicates the sample has been completed.
•
12 - List Complete — 1 indicates the programmed list has been completed. Not readable
•
13 - Not Used — always zero.
•
14 - List Running — 1 indicates the programmed list is in progress.
•
15 - Not Used — always zero.
3.6.7.3
QUESTIONABLE STATUS REGISTER
The QUEStionable condition register (see Figure 3-20) contains status bits representing
data/signals which give an indication of the quality of various aspects of the signal.
A bit set in the QUEStionable condition register indicates that the data currently being acquired
or generated is of questionable quality due to some condition affecting the parameter associ-
ated with that bit.
•
0 - Voltage Mode Error — 1 indicates the instrument is in Current mode.
•
1 - Current Mode Error — 1 indicates the Power Supply is in Voltage mode.
•
2 - Not Used — always zero.
•
3 - Thermal Error — 1 indicates a thermal error has been detected.
•
4 - 5 - Not Used — always zero.
•
6 - Slave Error — 1 indicates a slave fault in a master/slave configuration
•
7 - 11 - Not Used — always zero.
•
12 - Voltage Protect Error — 1 indicates a Voltage protection error has been detected.
NOTE: If External Reference is enabled and a protection error occurs, both Voltage Protect
Error (bit 12) and Current Protect Error (bit 13) are set
3-62
external and the trigger input goes low, the WTG will remain in a one condition until
after the trigger input goes high.
OPERation Status Condition register.
in OPERation Status Condition register.
BOP HIPWR 080709
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