Tektronix AFG2021 Programmer's Manual page 127

Enable Registers
AFG2021 Arbitrary Function Generator Programmer Manual
Table 3-4: QCR bit functions
Bit
15 to 12
11
10 to 6
5
4 to 0
There are four types of enable registers:
Event Status Enable Register (ESER) (See page 3-9.)
Service Request Enable Register (SRER) (See page 3-9.)
Operation Enable Register (OENR) (See page 3-10.)
Questionable Enable Register (QENR) (See page 3-10.)
Each bit in the enable registers corresponds to a bit in the controlling status
register. By setting and resetting the bits in the enable register, you can determine
whether or not events that occur will be registered to the status register and queue.
Event Status Enable Register (ESER). The ESER consists of bits defined exactly
the same as bits 0 through 7 in the SESR register. You can use this register to
control whether or not the Event Status Bit (ESB) in the SBR should be set when
an event has occurred, and to determine if the corresponding SESR bit is set.
To set the ESB in the SBR (when the SESR bit has been set), set the ESER bit
corresponding to that event. To prevent the ESB from being set, reset the ESER
bit corresponding to that event.
Use the *ESC command to set the bits in the ESER. Use the *ESR? query to read
the contents of the ESER.The following figure shows the ESER functions.
Figure 3-6: Event Status Enable Register (ESER)
Service Request Enable Register (SRER). The SRER consists of bits defined
exactly the same as bits 0 through 7 in the SBR. You can use this register to define
which events will generate service requests.
Function
—–
OVHP
—–
FREQ
—–
Status and Events
Not used
Overheat protection.
Indicates whether the
instrument internal
temperature is in
questionable condition.
Not used
Frequency. Indicates
whether frequency
accuracy of the signal
is of questionable quality.
Not used
3-9