The following information applies only to the Serial Output A/D board. If you are using SDR Server please see the SDR documentation here for information on how to use this option with my ISA A/D board.
The output of the WWVB interface circuit must be converted to standard RS-232 signal levels. A MAX-232 type of RS-232 interface IC chip should be used to convert the TTL (0 - 5V) signal level from the interface board to the +- 12V RS-232 signal levels. The WWVB signal should be connected to pin 1, the Carrier Detect line, of the 9 pin GPS Comm Port J3.
To enable this option in WinSDR, go to the System Settings dialog box and select WWVB in the Time Reference Type drop down box.
[Top] [Previous] [Next] [Home]