Fluke Portable Multimedia Player 8842a Manual De Usuario

Instruction Manual

3-28

BIT: 8

7

6

5

4

3

2

1

0

RQS

ANY

ERROR

DATA

AVAILIBLE

CAL STEP

COMPLETE

FRONT

PANEL SRQ

0

OVER-

RANGE

DECIMAL

VALUE:

64

32

16

8

4

2

1

1

Overrange

An overrange condition occurs

Device command received, or
Bus or Rear Panel Trigger, or
Output buffer is read

2

Not used

Never

Always

3

Front panel SRQ

Front panel SRQ button
pressed

Device command received

4

Cal Step Complete

Completion of store command
(C0)

Device command received

5

Data Availible

Output buffer loaded with any
data (Readings, Error
Messages. Get Responses)

Device command received, or
Bus or Rear Panel Trigger, or
Output buffer is read

6

Any Error

An error condition occurs. At
the same time the output buffer
is loaded with an error
message. This sets bit 5.

Device command received, or
Output buffer is read

7

RQS

Any SRQ mask-enabled bit is
set.

All SRQ mask-enabled bits are
cleared

8

Not used

Never

Always

For example, the serial poll register reads 00010000 (binary) when data is available. This
value is read in binary by the controller, which might numerically reformat the value to
16 (decimal) or 10 (hexadecimal).

The serial poll register is cleared whenever the 8842A receives a new input command
string.

The SRQ mask is a two-digit integer that specifies which conditions will generate a
service request. The SRQ mask is entered using the P1 command and can be read with
the G1 command. The conditions corresponding to each SRQ mask value are listed under
G1 in Table 3-1.