NEC XM37 User Manual download pdf (Page 27)

Command Communication Sequence

When external equipment such as a personal computer gives the command to

the XP37 Plus/XM37 Plus, the XP37 Plus/XM37 Plus returns an ACK. So

make sure that the external equipment receives this ACK.

The XP37 Plus/XM37 Plus returns an ACK if it has received the command

correctly.

If it has not received the command correctly due to data error, it will return

nothing. Therefore, when the external equipment send a command, make

sure that it received the ACK.

Command sending/receiving sequence

External equipment

(PC)

XP37 Plus/XM37 Plus

Command

ACK

XP37 Plus/XM37 Plus → PC

Example: Input switching (VIDEO 1) from the PC to the XP37 Plus/XM37

Plus(when the address selector equals 0)

PC → XP37 Plus/XM37 Plus

XP37 Plus/XM37 Plus → PC

COM1

Contents

Power On

Power Off

Degauss Control

Length

COM2

COM1

Contents

Power On (ACK)

Power Off (ACK)

Input Switching (ACK)

Degauss Control(ACK)

Length

COM2

PC CONTROL COMMAND LIST FOR USE WITH THE XP37 Plus/XM37 Plus

PC → XP37 Plus/XM37 Plus

COM1

COM2

Length

Data 1

Data 2

VIDEO1 : 01

VIDEO2 : 02

RGB1 : 03

RGB2 : 04

Sum

COM1

COM2

Length

Data 1

1 2 ... 22 23 24 25 26 27 28 29 30 31 32 ... 37 38

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NEC XM37 User Manual Page 27

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