Keithley 2002 User Manual

IEEE-488 Reference
3-30
*ESE <NRf> — event enable
Program the Standard Event Enable Register
*ESE? — event enable query
Read the Standard Event Enable Register
<NRf> = 0 Clear register
1 Set OPC (B0)
4 Set QYE (B2)
8 Set DDE (B3)
16 Set EXE (B4)
32 Set CME (B5)
64 Set URQ (B6)
128 Set PON (B7)
255 Set all bits
The *ESE command is used to program the Standard Event Enable Register. This command is
sent with the decimal equivalent of the binary value that determines the desired state (0 or 1) of
the bits in the register. This register is cleared on power-up.
This register is used as a mask for the Standard Event Status Register. When a standard event is
masked, the occurrence of that event will not set the Event Summary Bit (ESB) in the Status
Byte Register. Conversely, when a standard event is unmasked (enabled), the occurrence of that
event sets the ESB bit. For information on the Standard Event Status Register and descriptions
of the standard event bits, see paragraph 3.10.3. The Status Byte Register is described in para-
graph 3.7.6.
A cleared bit (“0”) in the enable register prevents (masks) the ESB bit in the Status Byte Register
from setting when the corresponding standard event occurs. A set bit (“1”) in the enable register
allows (enables) the ESB bit to set when the corresponding standard event occurs.
The Standard Event Enable Register is shown in Figure 3-14 and includes the decimal weight
of each bit. The sum of the decimal weights of the bits that you wish to be set is the parameter
value that is sent with the *ESE command. For example, to set the CME and QYE bits of the
Standard Event Enable Register, send the following command:
*ESE 36
where; CME (bit B5) = Decimal 32
QYE (bit B2) = Decimal 4
<NRf> = 36
If a command error (CME) occurs, bit B5 of the Standard Event Status Register sets. If a query
error (QYE) occurs, bit B2 of the Standard Event Status Register sets. Since both of these events
are unmasked (enabled), the occurrence of any one of them causes the ESB bit in the Status Byte
Register to set.
The Standard Event Status Event Register can be read by using the *ESE? query command.
PRINT #1, "output 16; *ese 24; *ese?" ' Set bits B3 and B4, and query
PRINT #1, "enter 16" ' Get response from 2002
3.10.2
Parameters
Description
Program fragment

Keithley 2002 Specifications

General

Resolution	8.5 digits
DC Voltage Accuracy	±0.0006%
Maximum DC Voltage	1000 V
Maximum AC Voltage	750 V
Maximum DC Current	3 A
Maximum AC Current	3 A
Connectivity	GPIB, RS-232
DC Voltage Range	100 mV to 1000 V
AC Voltage Range	100 mV to 750 V
Resistance Range	10 Ω to 1 GΩ
Model	2002
Category	Multimeter
Interface	GPIB, RS-232
AC Current Accuracy	±0.1%
Frequency Range	0.1Hz to 300kHz
Display	VFD
Type	Digital
Power Supply	100-240V AC, 50/60Hz
Current Range (DC)	100 μA to 3 A
Current Accuracy (DC)	±0.01%
Current Range (AC)	100 μA to 3 A
Current Accuracy (AC)	±0.1%
DC Current Range	100 μA to 3 A
AC Current Range	100 μA to 3 A