Keithley SourceMeter 2600 Series

10 Digital I/O Port
Overview .................................................................................................. 10-2
Digital I/O port .......................................................................................... 10-2
Port configuration ............................................................................... 10-2
Digital I/O configuration ..................................................................... 10-4
Controlling digital I/O lines ................................................................. 10-5
Output Enable (Models 2601/2602) ......................................................... 10-9
Overview ............................................................................................ 10-9
Operation ........................................................................................... 10-9
Front panel control of Output Enable ................................................. 10-9
Remote control of Output Enable .................................................... 10-10
Interlock (Models 2612/2612) ................................................................. 10-11
Overview .......................................................................................... 10-11
Operation ......................................................................................... 10-11
11 Communications Interfaces
Overview .................................................................................................. 11-2
Selecting an interface ............................................................................... 11-2
GPIB operation ......................................................................................... 11-3
GPIB standards ................................................................................. 11-3
GPIB connections .............................................................................. 11-3
Primary address ................................................................................. 11-5
Terminator .......................................................................................... 11-6
General bus commands ........................................................................... 11-7
REN (remote enable) ......................................................................... 11-7
IFC (interface clear) ........................................................................... 11-7
LLO (local lockout) ............................................................................. 11-8
GTL (go to local) ................................................................................ 11-8
DCL (device clear) ............................................................................. 11-8
SDC (selective device clear) .............................................................. 11-8
GET (group execute trigger) .............................................................. 11-8
SPE, SPD (serial polling) ................................................................... 11-8
Front panel GPIB operation ..................................................................... 11-9
Error and status messages ................................................................ 11-9
GPIB status indicators ....................................................................... 11-9
LOCAL key ...................................................................................... 11-10
RS-232 interface operation .................................................................... 11-10
Setting RS-232 interface parameters .............................................. 11-10
Sending and receiving data ............................................................. 11-11
Terminator ........................................................................................ 11-11
Baud rate ......................................................................................... 11-12
Data bits and parity .......................................................................... 11-12
Flow control (signal handshaking) ................................................... 11-12
RS-232 connections ........................................................................ 11-13