Amplifier Research 100A250 series Handmatig - Pagina 8

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Model 100A250A

2.2.2

2.2.2.4.2 IEEE-488 device address selection (continued)

Device Address

2.2.2.5

Command Set Format

Each command is composed of one alpha character, up to four numeric parameters, and a

command termination character. The command termination character is the "line feed" command,

which is denoted and entered as <LF>. Commands are case-sensitive and must be entered in upper

case only in order to be recognized.

2.2.2.6

IEEE-488 Communications

For IEEE-488 communications, the "End or Identify" (EOI) control line may also be used for

command termination. When sending commands to the Model 100A250A via the IEEE-488 bus,

terminate each command with a <LF>, an EOI, or both. No characters are permitted after the

<LF> or EOI; the 100A250Ainterprets characters following the <LF> or EOI as the start of the

next command. When an error condition is present at the Model 100A250A, the "Service Request"

(SRQ) line is asserted; the operator can then perform a serial poll operation. The Model 100A250A

error code (in binary) is contained in the returned serial poll status byte (STB). These error codes

are defined in Table 2-2.

Remote Operation (continued)

IEEE-488 Device Address Selection

Switch 5

off (0)

on (1)

Table 2-1

Switch 4

Switch 3

off (0)

on (1)

off (0)

on (1)

Manual Text

Switch 2

Switch 1

off (0)

on (1)

off (0)

on (1)

off (0)

on (1)

off (0)

2-4

REV -