3.2.1 CHARACTER LENGTH
Switches SW1-1 and SW1-2 operate jointly to set the asynchronous character length. The asynchronous character length setting is determined by combining the number of start, stop, data and parity bits that make up each character generated by the asynchronous DTE. The Model 2011 does not care about the composition of each asynchronous character, only its length is significant. Below are the combined switch settings that set the four possible asynchronous character lengths:
| SW 1-1 | SW 1-2 |
8 bit | OFF | ON |
9 bit | ON | ON |
10 bit | OFF* | OFF* |
11 bit | ON | OFF |
*Default settings
3.2.2EXTENDED SIGNALING RATE (ESR)
The position of switch SW1-3 ensures that the asynchronous input data rate matches the synchronous output data rate. When switch SW1-3 is set to OFF, the asynchronous bit rate must match the synchronous clock rate to a tolerance of -2.5% to +1%. When switch SW1-3 is set to ON, the asynchronous bit rate must match the synchronous clock rate to a tolerance of -2.5% to +2.3%.
| SW 1-3 |
-2.5% to +1% | OFF* |
-2.5% to +2.3% | ON |
*Default settings | |
NOTE: Switch SW1-4 is not used.
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