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Status and Events

4-8 AFG3000 Series Arbitrary/Function Generators Reference Manual

Questionable Event Register (QEVR). This register has the same content as the

Questionable Condition Register.

Questionable Condition Register (QCR). The Questionable Condition Register is

made up of sixteen bits which not the occurrence of only one type of event.

Figure 4-5: Questionable Condition Register (QCR)

Enable Registers

There are four types of enable registers:

 Event Status Enable Register (ESER), page 4-8

 Service Request Enable Register (SRER), page 4-9

 Operation Enable Register (OENR), page 4-9

 Questionable Enable Register (QENR), page 4-10

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.

Table 4-4: QCR bit functions

Bit Function

15 to 6 ––––– Not used

5 FREQ Frequency. Indicates whether frequency accuracy of the signal is of

questionable quality.

4 to 0 ––––– Not used

FREQ

76543210

7 6 5 4 3 2 1 0

9 8

1 2 ... 187 188 189 190 191 192 193 194 195 196 197 ... 229 230

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Tektronix AFG3000 Manuel d'utilisateur Page 192