IBM Car Amplifier 7220 Manual do Utilizador descarregar pdf (Página 52)

5-12

Chapter 5, FRONT PANEL OPERATION

5.2.07 RS232 Setup 2 Menu

Figure 5-8, RS232 Setup 2 Menu

This menu, shown in figure 5-8, has three controls affecting the RS232 computer

interface, as follows:-

Prompt

This function can be switched ON or OFF:-

The prompt character is sent out by the lock-in amplifier after each command

response to indicate that the response is finished and the instrument is ready for a

new command. It can also be used to signal overload conditions (see section

6.3.13 for further information).

OFF

No prompt character is sent.

Echo

This function can be switched ON or OFF (see section 6.3.08 for further

information):-

The lock-in amplifier echoes each character received over the RS232 interface

back to the controlling computer, to indicate it is ready to receive the next one. In

order for this to work, the controlling computer should ensure that it does not

send the next character until it has read the echo.

OFF

No character echo occurs.

Delimiter

Some instrument control commands generate more than one output value, such as the

1 2 ... 47 48 49 50 51 52 53 54 55 56 57 ... 154 155

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IBM Car Amplifier 7220 Manual do Utilizador Página 52