Tektronix KEITHLEY 707B, Справочное руководство

Страница: 415 / 534

Section 7: TSP command reference Models 707B and 708B Switching Matrix Reference Manual
7-184 707B-901-01 Rev. B / January 2015
B7 B6 B5 B4 B3 B2 B1 B0
** > > > > > > *
1 0 0 0 0 0 0 1
* Least significant bit
** Most significant bit
For information about .condition, .enable, .event, .ntr, and .ptr registers, refer to Status register set
contents (on page C-1) and Enable and transition registers (on page C-20). The individual bits of this
register are defined in the following table.
Bit Value Description
B0 status.MEASUREMENT_SUMMARY_BIT
status.MSB
Set summary bit indicates that an enabled event in the
Measurement Event Register has occurred.
Bit B0 decimal value: 1
B1
status.SYSTEM_SUMMARY_BIT
status.SSB
This bit is only available on Models
2601A/2602A/2611A/2612A/2635A/2636A. Set summary
bit indicates that an enabled event in the System Summary
Register has occurred.
Bit B1 decimal value: 2
B2 status.ERROR_AVAILABLE
status.EAV
Set summary bit indicates that an error or status message
is present in the Error Queue.
Bit B2 decimal value: 4
B3 status.QUESTIONABLE_SUMMARY_BIT
status.QSB
Set summary bit indicates that an enabled event in the
Questionable Status Register has occurred.
Bit B3 decimal value: 8
B4
status.MESSAGE_AVAILABLE
status.MAV
Set summary bit indicates that a response message is
present in the Output Queue.
Bit B4 decimal value: 16
B5 status.EVENT_SUMMARY_BIT
status.ESB
Set summary bit indicates that an enabled event in the
Standard Event Status Register has occurred.
Bit B5 decimal value: 32
B6 Not used Not applicable
B7 status.OPERATION_SUMMARY_BIT
status.OSB
Set summary bit indicates that an enabled event in the
Operation Status Register has occurred.
Bit B7 decimal value: 128
As an example, to set bit B0 of the service request enable register, set
status.request_enable
= status.MSB
.
In addition to the above values,
requestSRQEnableRegister
can be set to the numeric equivalent
of the bit to set. To set more than one bit of the register, set
requestSRQEnableRegister
to the
sum of their decimal weights. For example, to set bits B0 and B7, set
requestSRQEnableRegister
to 129 (1 + 128).
Bit B7 B6 B5 B4 B3 B2 B1 B0
Binary value 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1
Decimal 128 64 32 16 8 4 2 1
Weights
(2
7
) (2
6
) (2
5
) (2
4
) (2
3
) (2
2
) (2
1
) (2
0
)
Example 1
requestSRQEnableRegister = status.MSB +
status.OSB
status.request_enable = requestSRQEnableRegister
Uses constants to set the MSB and OSB
bits of the service request (SRQ) enable
register.