Patton electronic 2500RC, 2520RC, 2510RC user manual Force RTS, Character Length, DTE Data Format

Force RTS

Choosing option 3 in the Software Switch Menu takes you to the RTS Menu (below). The RTS input can be forced ON, ignoring the RTS signal from the DTE. When RTS is forced ON, the transmitter is always enabled and the user may send data. On a Model 2510RC or 2520RC, RTS should be forced ON for Switched-56 operation.

NOTE: When the Line Rate (Software Switch Menu option 1) is 64 Kbps, RTS is always forced ON, regardless of the Force RTS switch setting.

Character Length

Choosing option 4 in the Software Switch Menu takes you to the Character Length Menu (below). In asynchronous data format, the Model 2500RC Series supports 10-bit and 11-bit character lengths. Set this option according to the characteristics of the data being transmitted.

DTE Data Format

Choosing option 5 in the Software Switch Menu takes you to the Data Format Menu (below). This option controls whether an async-to- sync conversion is performed between the DTE and the Model 2500RC Series. (Data is always transferred synchronously between two Model 2500RC Series units.) For an asynchronous DTE, select the asynchronous data format1,2; for a synchronous DTE, select the synchronous data format.

NOTE1: The async rate of 57.6 kbps is supported at the 56 kbps line rate, provided the DTE equipment is configured to transmit two stop bits. The extra stop bit reduces the DTE’s effective data rate to allow synchronization with the 56 kbps line speed. Set the Model 2500RC Series for two stop bits by selecting “11 bit character length” in the Character Length Menu.

NOTE2: You can use the Model 2500RC Series to transmit lower- speed asynchronous data (up to 9.6 Kbps) over synchronous circuits by simple over-sampling. To do this, select the synchronous data format and set the line Line Rate (Software Switch Menu option 1) to at least four times that asynchronous data rate you wish to send. For example, use a Line Rate of 9.6 Kbps or higher for 2.4 Kbps async data.

17 18