Tait TB8100 Installation And Operation Manual

Contents

Tait TB8100 Installation And Operation Manual Manual pdf 39 page image

T801-4 Installation and Operation Manual Programming 39© Tait Electronics Limited September 20073.3 Setting Up the Satsync 7 ModuleThe Setup form allows you to set the operating parameters of the Satsync 7module. To open the Setup form, click Setup on the monitoring screen.The information and functions available on this form are explained in thefollowing paragraphs.Frequency Enter the required output frequency into this field. The maximumfrequency is 25MHz, and any higher frequency will not be accepted. Thefrequency is shown in Hz. The actual setting step size internally isdetermined by the relationship between the master crystal frequency and thecontrol voltage D/A resolution. The display will change from the“requested” frequency to the actual frequency set when you click the Applybutton. In this unit the step size is 0.025Hz.Level The level of the output frequency is shown in the Level field. However,the numbers in this field do not bear a specific relationship to the actualoutput level. Monitor the output with a suitable test instrument and adjustthe level as required. The two output channels can have different outputlevels.CTCSS Phase Locked Selecting the CTCSS Phase Locked check box forces the outputfrequency to have a positive going zero crossing at specific UTC marks. Thespecific times are on the hour and 30 minutes past the hour (this time istaken from the GPS receiver’s RTC since there is no internal RTC 1 ). Whenyou first select this box, the waveform will be forced to positive going zero1. If the T801-4 is using a 1PPS source without NMEA data (e.g. a QS 2RSU), CTCSS phase locking does not work.