【正文】 eld test display If the last number of the main menu loop is . 8, in order to activate test display number 20, just press Menu, 8, 20 and Ok in a sequence. See chapter for remendations. Deactivating the Field Test Display The Field Test Display is deactivated as follows: press the Menu button scroll in the main menu loop to field test display item press the Select button enter 0 at the TEST NUMBER prompt confirm with the Ok button Field test modes There are three Field Test Display modes: execute mode data display mode help mode Different modes are marked in this specification as follows: ************** ++++++++++++++ * * + + * Execute * +Data display+ Help * Mode * + Mode + Mode * * + + ************** ++++++++++++++ The execute mode is entered from the menu as described in (either scroll and select or shortcut). If the test index entered pertains to a test that resets a timer (test 80) for example, then the timer is reset as soon as the Ok button has been pressed in the menu, and the data display mode takes over. In other words, the execute mode is of the oneshot type. To run another test in the execute mode, the Field Test Display menu must be reactivated. During the data display mode, the field test data (. carrier, power level, cell) is visible on the main display. During the help mode, one screen of instructions is shown for each test to make it easier to identify the test in question. A long press of asterisk (*) is used to toggle between these two modes. The arrow keys (^,v) offer an easy way to switch to another test without using the menu. However, the data display mode remains, . nothing will be executed or set on although such tests would be passed. This is to prevent the user from accidentally clearing any valuable data. Displays 71 and 72 are exceptions。 is shown for all the digits. If data to be displayed is shorter than the field reserved to show that data, text is aligned left and numbers right. Signalling displays, which can be visible to network operators Those signalling displays which can be activated by the network operators are numbered from 1 to 19. Before field test displays are visible, mobile has to be modified. With the normal production mobile field test displays are not working. Display 1: Information of the serving cell ++++++++++++++ +abbb ccc ddd+ + e ff g mmmm+ + nnn ppp+ + oooo + ++++++++++++++ a H, if carrier numbers are scrolled when hopping is on. Otherwise 39。 and BSIC value will be displayed in active mode. ccc rx level in dBm, minus sign not shown if =100 ddd C2 value, range is 99 99 e,g F is shown if cell is in a forbidden location area otherwise location is empty. f,h B is Barred, N is normal priority and L is low priority otherwise location is empty. HELP display: SCH C1 rx C2 1CH C1 rx C2 2CH C1 rx C2 1N 2N  Display 4: Information of the 3rd, 4th and 5th neighbour ++++++++++++++ +aaabbbcccddd+ +aaabbbcccddd+ +aaabbbcccddd+ + ef gh ij + ++++++++++++++ 1. row: 3. neighbour information 2. row: 4. neighbour information 3. row: 5. neighbour information 4. row, ef: 3. neighbour information 4. row, gh: 4. neighbour information 4. row, ij: 5. neighbour information aaa carrier number in decimal bbb C1 value, range is 99 99, displayed only in idle mode. Instead of C1 value, letter 39。 and BSIC value will be displayed in active mode. ccc rx level in dBm, minus sign not shown if =100 ddd C2 value, range is 99 99 e,g,i F is shown if cell is in a forbidden location area otherwise location is empty. f,h,j B is Barred, N is normal priority and L is low priority otherwise location is empty. HELP display: 6CH C1 rx C2 7CH C1 rx C2 8CH C1 rx C2 6N 7N 8N  Display 6: Network selection display This display shows the last registered network country code and network code as well as the codes for four forbidden networks and the first 3 preferred networks. ++++++++++++++ +aaabb aaabb+ +aaabb aaabb+ +aaabb aaabb+ +aaabb aaabb+ ++++++++++++++ If three digit MNC is used (DCS1900), display looks different: ++++++++++++++ +aaabbbaaabbb+ +aaabbbaaabbb+ +aaabbbaaabbb+ +aaabbbaaabbb+ ++++++++++++++ 1. row: last registered network 1st forbidden network 2. row: 1st preferred network 2nd forbidden network 3. row: 2nd preferred network 3rd forbidden network 4. row: 3rd preferred network 4th forbidden network aaa country code coded in BCD bbb network code coded in BCD, third digit can be 39。, where 1 means 6 min time. So, if this value is 2 less than