NiCOM USA NT250FP03 NT 250 W FM EXCITER User Manual USERS MANUAL

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Document ID	393696
Application ID	ssX63hfd+EmaD3rswhm+CQ==
Document Description	USERS MANUAL
Short Term Confidential	No
Permanent Confidential	No
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Document Type	User Manual
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Filesize	17.49kB (218620 bits)
Date Submitted	2004-02-03 00:00:00
Date Available	2004-02-03 00:00:00
Creation Date	2004-01-15 12:24:00
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Document Lastmod	2004-01-15 12:29:47
Document Title	USERS MANUAL
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NT250 TechnicalandMaintenanceManual Nice/"Use Inc
REMOTE CONTROL FEATURE
The NT 250 is equipped with a 9 pin RS 232 connectorthat 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 otthe NT 250 on the computer's screen.
The NT 250 is also supplied with the interlock connectorthat allows to switch the power on and
offsimply bygroundingtheinnerconductorofthe BNC.
NOTE:
The CD Rom supplied contains the remote control software ofthe NT 250.
REMOTE CONTROL SOFTWARE
INSTALLATION
The NT 250 comes with a Serial port RS 232. This port allows a Bi—Directional remote control of
the unit from a PC.
INSTALLING THE SOFTWARE
1. Insert the NT 250 CD-ROM into the CD drive.
2. Run Setupexe file found in the main folder of the CD-ROM. The installation will continue
automatically asking only for the name of the folderof the hard drive where the program will
be installed. ltwill be necessaryto reboot the computer.
3. Once installed, the Tx__Nicom program icon can be recalled by clicking : Start - Programs -
Tx__Nicomicon.
CONNECTING THE NT 250
The NT 250 is equipped with a Serial Port (R8232) in the rear panel To connect the computer
with the NT 250 we recommend standard serial cables Pin-to—Pin,’ the lenght of the cable must
stay within 60 feet.
REIVflSMBER T0 CLOSE THE PROGRAM BEFORE REMOVINGTHE CONNEQTINGCABLE
Page 3
NT250 Technical and Maintenance Manual NicomUsa Inc
RUNNING THE PROGRAM
Once the program is running, from the main screen it is necessary to click the POWER ON '
button; the screen will light up and a message" COMMUNICATION IN PROGRESS"wiII appear.
After few seconds, on the left side of the screen, the operating frequency will appeartogether
with all the other parameters, If not, check the Communication portsetting (COM1-COM 2)
To change it, click the File menu andthen select "set Port".
The other parameters shown on the screen are the following:
tTemgrature in Celsius ( rememberthat Fatheneit is Celsius x 1.8 + 20)
2. Looklndicator showing that PLL circuit ofthe unit is locked
3. On the Air showingthatthe unitis transmitting
4. RF Forward giving the amount ofWatts radiated
5. RF Reflected giving the amount of reflected power
On the right side of the screen there are four buttons that allow to modify the parameters:
at Send Button to be used after a change of frequency is made
b. Set Freg' uency allows the change of frequency by clicking the new frequendyon
the keyboard on the left side of the screen
c. Disconnect allowsto disconnectthe system
d. RF On tumsupanddownthepcwer
Page 4
NT250 Technical and Maintenance Manual NlcomUsa Inc
NT 250 PROGRAMMING
Connect a 50 ohm load or50 ohm antenna to the RF output, connect the equipmentlnto a mains
supply (100440 VAC). The equipmentis factory pre-set to 10 W
Switch ON the power and the yellow V POWER LED will light.
The Display will show
WAlT D PROGRAM
D SET'rlivG
Afler3 seconds the green PLL LOCK led willlight and the Displaywill showan increasing bar. After
a further5 seconds the green ENABLE LED williight and there will be output power
At this point the Display will show the next parameter:
Level Modulation (MOD >
Forward Power(FRW10V10;
Reflected Pawer(RFL 0.4W).
M01» ||||||n D mam
C] SETTING
FRW 10W RFL 0.4W
The default frequency is 98.000 MHz.
To display the frequency push the SETTING key.
in order to display the parameterpush the SELECTkey
Page 5
NT250 Technical and Maintenance Manual NicomUsa Inc
Disglaz Eassword
The Password mode is factory set to enable, and is not possible change this setting,
The default password is 1 2 3.
The way forchanging the password is the following:
. Press the PROGRAM key for 3 seconds;
PASSWORD E] PROGRAM
9123456739
E] SETTING
. Press the PROGRAMkey to move the underscore characterposition atthe requireddigit, and
press the SE7TING key to con/inn the digit.
PASSWORD * C] PR°GRAM
0123456789
C] SETTING , \
Repeat the same for the two remaining digits
PASSWORD * * a: C] PR°GRAM
0123456789
D SETTING
Ifthe password is correctpress the SETTING key to confirm, otherwise press the PROGRAM
key to select again.
CONFIRM (YIN) ? [3 PROGRAM
N=SEL. Y=SET.
D SETTING
Page 6
NT250 Techniceland Maintenance Manual NicomUsa Inc
If the password is not correct an error is displayed
ERROR [3 PROGRAM
PASSWORD
D SETTING
After a few seconds the display will show the parameters again
When the password is correct, the display will show
NEW PASS. = SET. C] PR°GFAM
NEW FREQ . = PRG
D SETTING
To change the password press the SETTING key.
To change the frequency press the PROGRAM key,
CHANGE OF PASSWORD
The password is set at the factory and corresponds to the numbers 1 - 2 ~ 3.
However it is possible to set a new custom password,
The main purpose is to avoid somebody to enter your system and modify the
main parameters 0! your settings,
Every new password has to be made with only three numbers.
ltr‘s very important that you write somewhere the new password, because once that has been
set, it is not possible to change anymore or to make any change if the password is not entered.
VERY IMPORTANT:
KEEP TRACK OF YOUR NEW PASSWORD IIIl
Page7
NT250 Technical and MaintenanceManuaI NicomUse Inc
. For changing the password proceed with the same method for the required password:
NEW PASSWORD C] PROGRAM
9123456789
[j SETTING
The confirmation password will be required.
CONFIRMATION C] PROGRAM
9123456789
D SETTING
If the password is correct the display will show:
STORED D PROGRAM
NEW PASSWORD
D SETTING
If the confirmation password is wrong the display will show:
ERROR D PROGRAM
CONFIRMATION
D SETTING
IMPORTANT NOTE
I BE CAREFUL l
Oncethepasswordis set, ltmustbe remembered, otherwiseneitherthefrequencynor the
password can be reset and the unit has to be sentback to the factory.
Page 8
NT 250 Technical and Maintenance Manual NicomUsa lnc
Dlsglaz Change of Freguongz.
- Press the PROGRAM key fora seconds and enter the correct password. Atthis point press again the
SELECT key.
NEW PASS. = SET. Q PROGRAM
NEW FREQ. = PRG
D SETTING
. Press the PROGRAM key to change the desired digit and press the SETTING key to confirm it,
FREQUENCY ? D "106“
MHz 103.900
D SETTING
The underscore character indicates which digit can be change.
To move the underscore character hit the PROGRAM key.
When the new frequency is chosen, then press the SETTING key confirm it.
After a ‘WAIT CYCLE", the display will show the parameters:
FRW 5.0W RFL 0.4W D SETTmG
After 7 minutes the display light will switch of! and the display will show:
Nlcom D PROGRAM
MHz 103.900
C] SETTING
Page 9

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