Acom 600S Operating Manual

Contents

Acom 600S Operating Manual Manual pdf 22 page image

Page 21 of 335-1. Menu “Measurements in the amplifier” – AMP MEASUREThe menu AMP MEASURE (Fig. 5-1) is accessible from the MENU SELECTION screen (Fig. 5) in all modes. It ispossible to measure digitally 11 parameters in it, characterizing the amplifier operation and its regime.Fig. 5-1 Menu “Measurements in the amplifier” – AMP MEASURETwo identical lists appear on the left and the right halves of the screen, each one having the 11 parameters,whose values are refreshed continuously.An arbitrary parameter can be selected in each screen half. Using buttons ITEM1 and ITEM2 (up and down) selectthe desired item (parameter) – it will be marked with color. Upon reaching either the top or bottom edge of anyhalf-screen, further movement in the same direction will cause the screen to scroll up or down, respectively, soyou can reach all the items in the list. The two marked parameters will be indicated continuously in the digitalmeasurements area on the basic screen (S. 3-2(b), Fig. 3-2) - after leaving this menu (EXIT button).5-2. Menu “Service functions in the amplifier” – AMP SERVICE.The amplifier service menu (Fig. 5-2) is accessible from the MENU SELECTION screen (Fig. 5) only duringreception (RX mode).C A U T I O NThe AMP SERVICE menu is used for check and adjustment of the zero-signal (idling) drain current of the final transistors and for tests of somefunctions and circuits in the amplifier during repair as described in theTechnical compact disk (CD – option to the amplifier). We recommendthеsе procedures are carried out only by a trained service technician!With the ITEM buttons (up and down) the necessary service function is selected – it is colored. With the SELECTbuttons (left or right) the selected function or test item is turned ON or OFF.The inactive functions are grey and the active - red. At leaving a function, its parameters are turned off anddeactivated automatically. Pressing the EXIT button all service functions (except for the OPERATE ACCESS) areturned off (deactivated), menu AMP SERVICE is abandoned, and the MENU SELECTION screen comes back(Fig. 5). At another pressing of the EXIT button, the basic screen returns (Fig. 3-2).