Consts
| Scope | Name | Type | Value | Description |
| Public | ACK | Long | 0 | |
| Public | ETHERNET_KEEPALIVE | Long | 1500 | send a keep-alive after 1.5s of interface inactivity |
| Public | ETHERNET | Long | 2 | |
| Public | ETHERNET_TIMEOUT | Long | 1000 | default timeout of 1000mS |
| Public | INTERNET_TIMEOUT | Long | 3000 | 3 seconds if DP5 is on different subnet than this PC |
| Public | Retries | Long | 2 | total of 3 attempts |
| Public | RS232 | Long | 0 | |
| Public | RS232_TIMEOUT | Long | 2500 | default timeout of 2500mS (8K spectrum ~2.2s) |
| Public | SYNC1_ | Long | &HF5 | |
| Public | SYNC2_ | Long | &HFA | |
| Public | USB | Long | 1 | |
| Public | USB_TIMEOUT | Long | 500 | default timeout of 500mS |