Keithley 2790, Reference Manual

Page: 14 / 568

Case sensitivity ............................................................... 10-13
Long-form and short-form versions ................................ 10-13
Short-form rules .............................................................. 10-13
Program messages ........................................................... 10-14
Response messages ......................................................... 10-16
Message exchange protocol ............................................ 10-17
RS-232 interface operation .................................................... 10-17
Sending and receiving data ............................................. 10-17
Baud rate ......................................................................... 10-17
Signal handshaking (flow control) .................................. 10-18
Terminator ....................................................................... 10-19
Selecting and configuring RS-232 interface ................... 10-19
RS-232 connections ........................................................ 10-20
Error messages ................................................................ 10-21
11 Status Structure
Overview .................................................................................. 11-2
Status byte and SRQ ......................................................... 11-2
Status register sets ............................................................. 11-2
Queues .............................................................................. 11-2
Clearing registers and queues ................................................... 11-4
Programming and reading registers ......................................... 11-5
Programming enable registers ........................................... 11-5
Reading registers ............................................................... 11-6
Status byte and service request (SRQ) ..................................... 11-6
Status byte register ............................................................ 11-7
Service request enable register .......................................... 11-8
Serial polling and SRQ ..................................................... 11-8
Status byte and service request commands ....................... 11-9
Serial poll programming example ................................... 11-10
Status register sets .................................................................. 11-12
Register bit descriptions .................................................. 11-12
Condition registers .......................................................... 11-18
Event registers ................................................................. 11-19
Event enable registers ..................................................... 11-20
Queues .................................................................................... 11-21
Output queue ................................................................... 11-21
Error queue ..................................................................... 11-21
12 Common Commands
13 SCPI Signal Oriented Measurement Commands
CONFigure:<function> [<rang>], [<res>], [<clist>] .............. 13-4
FETCh? .................................................................................... 13-6