Agilent Technologies 8935 Series Bedienungsanleitung PDF herunterladen (Seite 233)

Chapter 8 233

IBASIC Controller

Interfacing to the IBASIC Controller using Serial Ports

Receive and Transmit Pacing

When receiving characters into the IBASIC Command Line field, the

Test Set’s microprocessor responds to each entry and no buffering is

required. Therefore, when using your PC or terminal to send characters

to the IBASIC Command Line field, it is permissible to set Rcv Pace and

Xmt Pace to None.

When sending data through the Test Set’s Serial Port to external

devices like printers which may have small input buffers, it is

important to set Rcv Pace and Xmt Pace to Xon/Xoff. This allows the

printer to stop data transmission from the Test Set when the printer’s

buffer is full and then start it again when the printer is ready.

The Test Set has a Serial Port input buffer length of 2000 characters.

Buffer size becomes important when IBASIC programs expect to

receive large amounts of data through the Serial Port with a single

ENTER statement.

Table 8-2 Test Set Serial Port 9 Configuration

Field Available Settings Recommended Setting

Serial In Inst/IBASIC Inst

IBASIC

Echo

On/Off On

Inst Echo On/Off On

Serial

Baud Rate

150, 300, 600, 1200, 2400,

4800, 9600, 19200

9,600

Parity None, Odd, Even, Always 1,

Always 0

None

Data

Length

7 bits, 8 bits 8 bits

Stop

Length

1 bit, 2 bits 1 bit

Rcv Pace

(receive

pacing)

None, Xon/Xoff Xon/Xoff

Xmt Pace

(transmit

pacing)

None, Xon/Xoff Xon/Xoff

1 2 ... 228 229 230 231 232 233 234 235 236 237 238 ... 328 329

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