Measurement Computing Micro 488/EX rev.2.1 - Manual (Page 167)

Section 6 Controller Pass-Thru Operation
6.3
SW3 View for IEEE Address Selection
OPEN
1 2 3 4 5 6 7 8
1
0
DOT
Switch
Side
View
0 x 16
1 x 8
0 x 4
1 x 2
0 x 1 = 0
= 8
= 0
= 2
= 0
+
IEEE Address = 10
6.4 Talk Back On Terminator
A switch selectable talk back feature is included to provide bi-directional
communication with the IEEE device. Whether the talk back feature should be enabled
is dependent on the application.
SW1-7 is used to determine whether the interface should address the attached bus
device to talk after sending the selected IEEE bus terminator(s). This feature is
commonly used to provide bi-directional communication with a single IEEE
instrument. Talk back will only occur if there is no serial data to output to the IEEE
device.
SW1 View for Talk-Back Selection
OPEN
1 2 3 4 5 6 7 8 DOT
Switch
Side
View
OPEN
1 2 3 4 5 6 7 8
Talk Back on
Terminator Disabled
Talk Back on
Terminator Enabled
When the serial input buffer becomes empty, the Micro488/EX checks the last
characters sent to the IEEE bus device. If these were the IEEE bus terminators and
Talk-Back is enabled, the IEEE bus device is addressed to talk. Any data received by
the Micro488/EX from the bus device is sent to the serial host.