By default all analogue outputs incuding, IRIG-B (input and output), Serial, Fixed Frequency, Programmable Pulse and DCF-77 are provided free with the purchased unit. The only outputs that require licenses are PTP, NTP and PRP. If you require one of these licenses for your unit please contact sales@tekron.com
To determine which licenses you have installed you can view the maintenance tab and the licenses will be listed in the bottom left.