VT510 Video Terminal Programmer Information

DECSTRL—Set Transmit Rate Limit

Limit the rate of character transmission according to the selected rate.

Format

CSI
9/11
Ps1
3/n
;
3/11
Ps2
3/n
"
2/2
u
7/5

Parameters

Ps1
indicates the key type.

Ps1 Key Type
1, 0 or none All Keys
2 Graphic Key
3 Function Key

Ps2
indicates the characters per second.

Ps2 Characters Per Second
1, 0 or none 150 CPS
2 50 CPS
3 30 CPS

Description

When enabled, the terminal limits the rate at which it transmits the answerback, CPR, DA, TSI, and DSR messages, as well as the keyboard keys, and any other characters transmitted from the terminal. All messages and keystrokes are transmitted according to the selected "character per second" rate.

You can select different transmit rates for graphic keys and function keys, which usually transmit more than one byte at a time.

The transmit rate limit function can be enabled and disabled through the DECXRLM control function. When disabled, all messages and keystrokes are transmitted as fast as possible without any delay between characters.