Quantum Data 802R Guide de l'utilisateur télécharger pdf (Page 283)

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Video Test Generator User Guide 273

DCBM

Display Code Bit Mask

Class Direct processor control

Description Sets the 4-bit binary bit mask used by the DCRD? query. The mask is entered as the

decimal equivalent of a 4-bit binary number. The binary number represents the masking of

the individual sense lines from M3 (MSB) to M0 (LSB). The DCBM? query returns the

current setting of DCBM.

Command syntax DCBM mask

mask

0 = 0 0 0 0 8 = 1 0 0 0

1 = 0 0 0 1 9 = 1 0 0 1

2 = 0 0 1 0 10 = 1 0 1 0

3 = 0 0 1 1 11 = 1 0 1 1

4 = 0 1 0 0 12 = 1 1 0 0

5 = 0 1 0 1 13 = 1 1 0 1

6 = 0 1 1 0 14 = 1 1 1 0

7 = 0 1 1 1 15 = 1 1 1 1

Query syntax DCBM?

Query response mask

Other required

commands

The FMTU command instructs the generator to use the new setting. The ALLU command

updates hardware to the new setting and redraws the test image.

Example

DCBM 7 // Set mask to read sense lines 0, 1 and 2 only

FMTU // Update hardware to current buffer contents

1 2 ... 278 279 280 281 282 283 284 285 286 287 288 ... 743 744

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Quantum Data 802R Guide de l'utilisateur Page 283

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