NT 250 Technical and Maintenance Manual Nicodemus Inc REMOTE CONTROL FEATURE The NT 250is equipped with a 9 pin RS 232 connector that allows all the mains telemetry functions. The software is supplied with the unit and with this CD rom it's possible to monitor and to change the main parameters ot the NT 250 on the computer's screen. The NT 250s also supplied with the interlock connector that allows to switch the power on and off simply by grounding the inner conductor of the BNC.
NT 250 Technical and Maintenance Manual Nicodemus Inc RUNNING THE PROGRAM Once the program is running, from the main screen iris necessary to click the POWER ON button; the screen will light up and a message” COMMUNICATION IN PROGRESS" will appear. After few seconds, on the left side of the screen, the operating frequency will appear together with ali the other parameters. If not, check the Communication port setting (COM 1-COM2). To change it, click the File menu and then select "set Port".
NT 250 Technical and Maintenance Manual Nicolas Inc NT 250 PROGRAMMING Connect a 50 ohm load or 50 ohm antenna to the RF output, connect the equipment into a mains supply (100-240 VAC). The equipment is factory per-set to 10 W. Switch ON the power and the yellow V POWER LED will light. The Display will show: WAIT ] PROGRAM (7) serve After seconds the green PLL LOCK led will light and the Display will show an increasing bar.
NT 250 Technical and Maintenance Manual Nicodemus inc Display Password The Password mode is factory set to enable, and is not possible change this seeing. The default password is 123. The way for changing the password is the following: = Press the PROGRAM key for 3 seconds; PASSWORD [) Pro Gram 0123456789 (] serve + Press the Program key to move the underscore character position at the required digit, and press the SETTING key to confirm the digit.
NT 250 Technical and Maintenance Manual Nicodemus Inc If the password is not correct an error is displayed ERROR (] PROGRAM PASSWORD 0 SETTING After a few seconds the display will show the parameters again. When the password is correct, the display will show SET. | [] PROGRAM PRG NEW PASS . NEW FREQ. (7) setting To change the password press the SETTING key. To change the frequency press the PROGRAM key.
NT 250 Technical and Maintenance Manual Nicodemus Inc » For changing the password proceed with the same method for the required password: NEW PASSWORD pro Gram 0123456789 (] serve The confirmation password will be required.
NT 280 Technical and Maintenance Manual Nicodemus inc Display Change of Frequency. » Press the PROGRAM key for 3 seconds and enter the correct password. At this point press again the SELECT key: NEW PASS. = SET. | (| PROGRAM NEW FREQ. = PRG | — gone . Tress the PROGRAM key to change the desired digit and press the SETTING key fo confirm it. FREQUENCY ? PROGRAM MHz 103.900 (7) inserting The underscore character indicates which digit can be change. To move the underscore character hit the PROGRAM key.