Enabling The Ieee-488 Interface; Ieee-488.1 Capabilities; Ieee-488 Setup - Fluke 2620A User Manual

2620A, 2625A
Users Manual
Capability
SH1 and AH1
T5
TE0
L4
LE0
SR1
RL1
PP0
DC1
C0
E1

Enabling the IEEE-488 Interface

The IEEE-488 interface can be enabled only from the front panel, using the following
procedure. This procedure is also summarized in Table 4-3.
Press these
buttons:
To select
from these
choices:
1. Select COMM (K L).
4-12
Table 4-2. IEEE-488.1 Capabilities
Read and write bus handshaking, including hold off.
Basic talker with serial poll and without talk only mode. Serial poll is used to
return the instrument status byte to the controller.
No extended talker.
Basic listener without listen only mode. Listen only mode is only useful for an
IEEE-488 device like a printer.
No extended listener.
Service request interface; allows SRQs (service requests). The SRQ function
allows the instrument to notify the controller when an operation is complete.
Remote local capability with local lock out. Usually the instrument front panel
will not be operational while the instrument is in use by the IEEE-488 interface.
Remote local capability enables the front panel. Local lock out disables the
front panel.
No parallel poll capability. Parallel poll is rarely used in the industry. It was
intended as a fast way to get a status bit from several devices, but failed in
gaining acceptance.
Device clear capability. This allows the instrument to be initialized to a known
state. The IEEE-488.2 standard describes exactly what this known state is.
Not a controller.
Open Collector Outputs
COMM
K L
( )
The left display shows "IEEE" or an RS-232 baud rate, and "bAUd" appears in the
right display. Proceed with the following steps.
If "IEEE" is shown in the left display, the IEEE-488 interface is already enabled.
Description
Table 4-3. IEEE-488 Setup
Baud
G
E
D
IEEE
300
600
1200
2400
4800
9600
Address
G
E
D
0
1
30