Chapter 2. Installation and SetupASM-10/8Installation and Operation Manual
Table 2-1 ASM-10/8 Internal Jumpers and Switches (Cont.)
Item | Jumper | Description | Values |
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15 | DIP Switch | The DIP switch consists of four sections. The S1 section is reserved for future use. | ||||
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| S2 | Selects the amount of stop bit | ON – 25% |
| OFF | |
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| shortening to be used in async mode. | OFF – 12.5% |
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| S3, S4 | Selects character length in async mode | S3 | S4 | No of bits |
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| Refer to Configuration Considerations | OFF | OFF | 8 BIT |
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| below for detailed explanation. | OFF | ON | 9 BIT |
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| ON | OFF | 10 BIT | 10 BIT |
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| ON | ON | 11 BIT |
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16 | Controls the V.54 delay to prevent | ON – V.54 delay |
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| multiple loopbacks. | enabled |
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| Refer to Configuration Considerations | OFF – V.54 delay | OFF | ||
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| below for detailed explanation of the | disabled |
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Configuration Considerations
Setting AGC and CTS Delay
The
•The receiver filter, which removes all the
•The automatic equalizer, which comprises several equalizers activated according to baud rate.
•The digital AGC, which automatically compensates for the attenuation of the line.
The following are general recommendations for the setup position of the AGC and CTS delay:
•For
•In multipoint or star applications, the AGC and CTS delay settings depend on the distances between the modems (see Table
Table | AGC and CTS Delay Settings for | |||
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Range | Rate | AGC Setting | CTS Delay Setting | |
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Less than 4.5 km | 9.6 to 19.2 kbps | CTRL (master and slave) | 0 msec (master) | |
6 km | 3.6 to 7.2 kbps |
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| 4.8 kbps |
| 8 msec (slave) |
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| 2.4 to 4.8 kbps |
| 8 msec or 64 msec |
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| (slave) |
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| 2.4 kbps and below |
| 64 msec (slave) |
Note: The selection between delays depends on the polling environment behavior. Therefore, it is different from application to application