Fluke 8842a instruction manual AN Overview of Remote Operation, IEEE-488 Address Selection

8842A

Instruction Manual

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D

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01

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T		A5		A4		A3		A2		A1		A
A												D
L												D
K												R
												E
O												S
N												S
L
Y
0	0		0		0		0		0		11
0	0		0		0		0		1
											12
0	0		0		0		1		0
											13
0	0		0		0		1		1
											14
0	0		0		1		0		0
											15
0	0		0		1		0		1
											16
0	0		0		1		1		0
											17
0	0		0		1		1		1
											18
0	0		1		0		0		0
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0	0		1		0		0		1
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0	0		1		0		1		0
											21

TA5 A4 A3 A2 A1

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0	0	1	0	1	1
0	0	1	1	0	0
0	0	1	1	0	1
0	0	1	1	1	0
0	0	1	1	1	1
0	1	0	0	0	0
0	1	0	0	0	1
0	1	0	0	1	0
0	1	0	0	1	1
0	1	0	1	0	0
0	1	0	1	0	1

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TALK ONLY

TA5 A4 A3 A2 A1

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0		1		0		1	1		0
0	1		0		1		1	1
0	1		1		0		0	0
0	1		1		0		0	1
0	1		1		0		1	0
0	1		1		0		1	1
0	1		1		1		0	0
0	1		1		1		0	1
0	1		1		1		1	0
			Not allowed
1		X		X		X	X		X

X = setting does not matter

f3-01.wmf

Figure 3-1. IEEE-488 Address Selection

Whenever the 8842A is in the local state, the IEEE-488 address can be displayed on the front panel by pressing the LOCAL button.

3-4. AN OVERVIEW OF REMOTE OPERATION

An overview of remote operation is presented in the block diagram in Figure 3-2. Each block represents a register, buffer, etc., contained in the 8842A. The status registers in the center column indicate the instrument’s status, including its function, range, reading rate, etc. The input buffer receives data from the IEEE-488 bus. The output buffer receives data from the blocks to its left, and sends data on to the IEEE-488 bus.

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