Keithley 2001 User Manual

IEEE-488 Reference
4-8
The individual bits of the transition filter registers can be set
or cleared by using the following SCPI commands:
:STATus:OPERation:PTR <NRf>
:STATus:OPERation:NTR <NRf>
The transition filter registers can be read at any time by using
the following SCPI query commands:
:STATus:OPERation:PTR?
:STATus:OPERation:NTR?
Reading a transition filter register using the above query
commands does not affect the contents of the register.
The following operations will set (1) all the bits of the PTR
register and clear (0) all the bits of the NTR register:
1. Cycling power.
2. Sending the :STATus:PRESet command.
3. Sending the :STATus:OPERation:PTR 65535 and
:STATus:OPERation:NTR 0 commands.
F
igure 4-7
Operation event status
(B15 - B11)
Idle
(B10)
(B9)
(B8)
(B7)
Arm
(B6)
Trig
(B5) (B4) (B3)
OR
Idle = Idle
Calc = Calculating
Arm = Waiting in an Arm Layer
Trig = Waiting in Trigger Layer
Set = Settling
Cal = Calibrating
& = Logical AND
OR = Logical OR
(B2)
Set
(B1) (B0)
(B15 - B11)
Idle
(B10) (B9) (B8) (B7)
Arm
(B6)
Trig
(B5)
(B4) (B3)
(B2)
Set
(B1)
(B0)
Operation Event
Register
(B15 - B11)
Idle
(B10) (B9) (B8) (B7)
Arm
(B6)
Trig
(B5)
(B4) (B3)
(B2)
Set
(B1)
(B0)
Operation Event
Enable Register
&
To Operation
Summary Bit
(OSB) of Status
Byte Register.
(See Figure 4-13).
&
&
&
PTR = Positive Transition Filter
NTR = Negative Transition Filter
PTR Transition
NTR Filter
(B15 - B11)
Idle
(B10) (B9) (B8) (B7)
Arm
(B6)
Trig
(B5)
(B4) (B3)
(B2)
Set
(B1)
(B0)
Operation Condition
Register
From OR'ed summary
of Trigger Event Status
(see Figure 4-10)
From OR'ed summary of
Arm Event Status (see
Figure 4-8).
Calc Cal
Calc Cal
Calc Cal
&
&
Calc Cal
Operation Event Register  This is a latched, read-only
register whose bits are set by the Operation Condition Reg-
ister and Transition Filter. Once a bit in this register is set, it
will remain set (latched) until the register is cleared by a spe-
cific clearing operation. The bits of this register are logically
ANDed with the bits of the Operation Event Enable Register
and applied to an OR gate. The output of the OR gate is the
Operation Summary Bit (OSB) that is applied to the Status
Byte Register. The following SCPI query command can be
used to read the Operation Event Register:
:STATus:OPERation?
Reading this register using the above SCPI command clears
the register. The following list summarizes all operations that
will clear the Operation Event Register:
1. Cycling power.
2. Sending the *CLS common command.
3. Sending the :STATus:OPERation:EVENt? query com-
mand.

Keithley 2001 Specifications

General

Brand	Keithley
Model	2001
Category	Multimeter
Language	English