![](/images/new-backgrounds/1195236/19523619x1.webp)
| A pair of Model 1053s communicate synchronously |
| across the twisted pair line connection. Therefore, you |
| must set these switches whether your application is |
| async or sync. For Sync or Async applications, please |
| configure one Model 1053 for internal clock mode and the |
Important | other Model 1053 for receive recover clock mode. |
|
Switch
S1-8
Off
Setting
Reserved
Configuring DIP switch S2
DIP switches in S2 are reserved and must be set in the OFF position. The following table summarizes default positions of DIP switches
10