National Instruments GPIB-232CV, User Manual

Page: 16 / 59

Description of the GPIB-232CV Chapter 1
GPIB-232CV User Manual 1-4 © National Instruments Corp.
The LEDs show the current status of the GPIB-232CV at all times.
Table 1-1 describes each LED.
Table 1-1. LED Descriptions
LED Indication
POWER Indicates that power to the unit has been applied and the
ON/OFF switch is in the ON position.
READY Indicates that the power-on self-test has passed successfully
and the unit is ready to operate.
TALK Indicates that the GPIB-232CV is configured as a GPIB
Talker.
LISTEN Indicates that the GPIB-232CV is configured as a GPIB
Listener.
BUSY Indicates that the GPIB-232CV is currently accepting serial
data. Each serial character received toggles the status of
the BUSY LED.
FULL Indicates that one of the GPIB-232CV data buffers is full.
This is not an error condition, but is merely a signal that
bus performance may be reduced to the speed of the slower
interface.