GDM-8246 MULTIMETER
PROGRAMMER MANUAL
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48
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Figure 8: Status registers and related commands
The CONDition register is a read-only register which monitors the
present state of the instrument. The CONDition register updates in real
time and the inputs are not latched or buffered. When a condition
monitored by the CONDition register becomes true, the bit for that
condition also becomes true (1). When the condition is false, the bit is 0.
The read-only EVENt register latches any false-to-true change in
condition. Once the bit in the EVENt register is set, it is no longer
affected by changes in the corresponding bit of the CONDition register.
The bit remains set until the controller reads it. The command *CLS
(Clear Status) clears the EVENt register.
QUEStionable Status Registers.
Table 4 shows the bit designations of the 16 bit QUEStionable Status
Register.
Enable
Register
Event
Register
Condition
Register
To SBR
GDM-8246 MULTIMETER
PROGRAMMER MANUAL
⎯
49
⎯
Table 4: QUEStionable Status Register
Bit 15 Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
∗
NU
NU Limit
Test
Fail HI
Limit Test
Fail LO
Capacitance
Overload
Ohm
Overload
NU
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
NU NU
Frequency
Null Sense
NU NU NU
Current
Overload
Voltage
Overload
The command STATus:QUEStionable:CONDition? Reads the
QUEStionable CONDition register but dose not clear it.
The command STATus:QUEStionable:EVENt? Reads the QUEStionable
EVENt Status register and clears it.
OPERation Status Registers
Table 5 shows the bit designations of the 16 bit OPERation Status
Register.
Table 5: OPERation Status Register
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11 Bit 10
Bit 9
Bit 8
NU NU NU
NU NU
NU NU
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
NU NU NU
NU
NU
NU
NU
NU
∗
NU: not used
