User manual TRILITHIC THREE

[. . . ] Model Three Signal Level Meter Operation Manual Trilithic Company Profile Trilithic is a privately held manufacturer founded in 1986 as an engineering and assembly company that built and designed customer-directed products for telecommunications, military and industrial customers. From its modest beginnings as a two-man engineering team, Trilithic grew over the years and broadened its offerings of RF and microwave components by adding broadband solutions to its product line. This was accomplished with the acquisition of components manufacturer Cir-Q-Tel and instruments manufacturer Texscan. Today, Trilithic is an industry leader providing telecommunications solutions for major broadband, RF and microwave markets around the world. [. . . ] Press the DIGI type only). Model Three Signal Level Meter - Operation Manual 37 When you are satisfied with your entries, highlight SAVE AND EXIT and press the (ENTER) key to return to the Edit User Plan screen. Adding a Channel: A channel may be added while in the Edit User Plan list of channels by pressing the key. A Channel Edit screen appears for the new channel with the next available channel number assigned. This channel number may be changed, but an existing number in the plan (enabled or not) may not be used. Other parameters on the new Channel Edit screen should be set, including frequency, which has a default setting of 55. 25 MHz. (ENTER) key to return to the Edit All channels, including a new channel, appear in the Channel Plan according to frequency--not channel number. Deleting a Channel: A channel may be entirely deleted while in the Edit User Plan list of channels by pressing the key. If a channel is deleted, it will not be available to enable later, and it will not be scanned in the Full Spectrum Scan mode. It is recommended that a channel be disabled instead of deleted from the plan. When you have completed your changes to all channels that require edit in the User Plan, press the key to save the modifications and return to the main Setup menu. All edits are temporarily stored until you exit the Edit User Plan screen. Do not turn off the Model Three before exiting the Edit User Plan screen, or the changes will not be saved. Model Three Signal Level Meter - Operation Manual 38 Tilt/Level List This feature lets you select up to twelve favorite channels. These channels are also used when making the Tilt measurement. You must select at least four channels to make the Tilt measurement. The Model Three uses the highest and lowest frequencies when making the measurement. Press the (ENTER) key from the Tilt/Level List selection on the Channel Plan Setup menu to enter the Tilt Setup screen. To add a channel to the Favorites list, use the and keys to scroll the list of channels key. When the desired channel is highlighted, press the check mark appears next to the channel under the Tilt column, and the channel number is placed in the Favorites column at the bottom of the display. As you add channels, the Favorites list arranges them in order of their frequency. For example, even if you selected Channel 14 first, as you add Channels 4 and 6, these channels go to the top of the list. Use the and keys to scroll through the User Plan list one page (6 channels) at a time. To delete a Tilt/Favorite channel, scroll to the channel and press the removed from the list. Once you have selected from four to twelve favorite channels, press the information and return to the main Setup menu. key. The channel is key to save the Model Three Signal Level Meter - Operation Manual 39 Load Defaults Press the (ENTER) key to load the factory default settings for the Model Three and then display the Level screen. This will not change the User Channel plan. Prior Menu Press the (ENTER) key to return to the main Setup menu. Model Three Signal Level Meter - Operation Manual 40 Chapter 5 5. Basic Operation Once you have set up the Model Three's parameters, you are ready to operate the device. There are a number of tests you can perform with the Model Three: · · · · · · · · Single channel level tests Frequency mode Channel scans Limit tests Frequency scanning (spectrum) Hum measurement QAM measurement Tilt and favorite channel levels The Model Three displays readings down to -50 dBmV (+10 dBV). All signal levels that are below -40 dBmV (+20 dBV) are displayed with lighter shade digits in all measurement modes to indicate they are low signal levels. Fast Setup The Model Three features a Fast Setup function for each measurement mode. [. . . ] The (TRIG) key key is used to trigger a key changes the display to a Live Spectrum scan instead of the file record display. You can also press the to change the soft key functions of the and keys to set the Scale and Reference manually or use the Auto scale and Reference or the Marker function. and (TRIG) key changes the display to a keys to set the Scale and Reference Live Channel scan instead of the file record display. You can also press the The view of file records operates with Limit, Spectrum, and Scan records only. [. . . ]