Measurement Computing Analyzer488 User Manual

Page 123

Section 4

Serial Controller

4.29

data

are the management line and data line status (two hex bytes

for each event) . Data is dependent on the contents of the
record memory.

checksum

is the one's complement of record length plus

address

plus all data bytes.

The last line sent is the S9 record which is
always: S9030000FC

Format of data bytes is:

Byte 1

Byte 2

(bit positions)

(Control and Status Lines)

(Data Lines)

8 7 6 5

4 3

2 1

8 7 6 5 4 3 2 1

REN IFC SRQ EOI BERR VALIDTRIG ATN

If a bus management or data line is asserted, its corresponding bit
will be true (1).

MODE Any

BUS STATES

None

QUERY

None

RESPONSE

EXAMPLES

PRINT#1,"ERASE"

Clear the record memory.

20 PRINT#1,"CONTROLLER ON"

Select High level control

30 PRINT#1,"SET TRIGGER OFF"

Do not use triggering

40 PRINT#1,"RECORD ON"

Start recording bus events

50 PRINT#1,"OUTPUT 20;W3X"

Send the command W3X

60 PRINT#1,"RECORD OFF"

Stop recording bus events

70 PRINT#1,"DUMP 0 TO 8"

Dump the first 9 locations

80 IF LOC(1) THEN PRINT INPUT$(LOC(1),1);
90 GOTO 80

The following response will be returned:

S1150000854A853F853484778433847884840D940A0000C1
S9030000FC