Figure 3-5 Setting The Interrupt Level; Table 3-2 Interrupt Levels - Keithley DAS-800 series User Manual

Jumper block J1 contains seven pairs of jumper posts, labeled 2, 3, 4, 5, 6,
7, and X (disabled). You set the interrupt level by placing the supplied
jumper clip over the appropriate posts. Note that you can set only one
interrupt level at a time.
Figure 3-5 illustrates the setting for interrupt level 5; the jumper clip is
over the posts labeled 5.
IRQ
LEVEL
2
Figure 3-5. Setting the Interrupt Level
Table 3-2 lists interrupt levels commonly used by IBM PC/XT, AT, and
compatible computers. Select an interrupt level that is not being used by
another resource in your system (including another DAS-800 Series
board), and set the jumper to the appropriate interrupt level. It is
recommended that you select interrupt level 3, 4, 5, or 7, if available.
Level
2
3
4
5
6
7
3 4 5 6 7
Table 3-2. Interrupt Levels
Use
Reserved (XT), interrupts 8 to 15 (AT)
Serial port COM2 or SDLC
Serial port COM1 or SDLC
Hard disk (XT), LPT (AT)
Floppy disk
LPT
X
3-15