Vytek DPT-450 User Manual 8

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Document ID	15609
Application ID	P1ngHYqau06ok8lThw6FOg==
Document Description	8
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	20.43kB (255433 bits)
Date Submitted	1998-12-10 00:00:00
Date Available	1998-09-12 00:00:00
Creation Date	2001-07-11 17:32:22
Producing Software	Acrobat Distiller 4.0 for Windows
Document Lastmod	2001-07-11 17:32:23
Document Title	8

MNT-DPT-4so’
DPT Series
Digital Paging Transmitter
User Manual
Sonik Technologies Corporation
110 Via Vern Cm:
San Mamas, CA 92069
1 arr V-wn m
MNT-DPI‘ASW
DPT-Series User Manual
This manual covers the following products:
Models: DPT—136 136-150MHL SW
DPT—150 l46 prompt should be displayed.
3.4. Programming
Programming and re-tuning of this product should only be performed
by a qualified service technician.
The Digital Paging Transmitter will respond with an ab prompt each
time it is ready for a command or has successfully executed a
command, An IR> prompt means a command was entered
incorrectly, and an 7 ? > prompt means the Digital Paging Transmitter
did not understand the command. All commands must be entered
exactly as specified below, in UPPERCASE letters. All commands
must end in a carriage return (the Enter key on most keyboards)
Valid commands are:
FREQ=nnn. nnnn where nnnnnnn is the frequency of operation in
3 DWV-mnu zo
KEY HIGH
KEY LOW
DATA+
DATA-
TKDATA
MNT-DP’TASIJ
MHZ.
Makes the keyline active high.
Makes the keyline active low
This sets the DATA input to positive polarity (l =
«leviathan, 0 = deviation)
Sets the DATA input to negative polarity (1 = -
deviation, 0 = +deviauon)
This command Is for testing purposes only. It
causes the transmitter to key. The modulation will
be an internally generated 244Hz square wave. Do
not apply external modulation when using this
function. The unit will unkey when any charactet
is received via the R5232 part.
3.5. Continuous Duty Cycle operation
Ifthe unit is to operated in a system that will leave it transmitting
100% of the tune, it should be physically located in an area that allows
air to circulate around the case. To ensure long equipment life, the
transmitter should be keyed 100% of the time only if the ambient
temperature is less than 45 degrees Celsius.
9 DPI‘VamnlD
MNTvDPT-450’
4. Alignment
4. 1. Equipment mqulred:
. Service monitor capable of measuring power. frequency and
modulation of an FM signal
- 2 amp DC power supply, adjustable 10-12.5V DC
Volt meter
o A spectrum analyzer may be handy for tuning and ensuring
stability or the carrier,
4.2. Procedure
1. Connect the power supply to the unit
2. Connect the service monitor to the unit.
3. Remove the bottom cover of the unit. There are two screws on
each side, two in the tram. and two in the rear that mist be
removed.
4. Turn the power on to the unit, but do not assert the keyline.
5. Program the intit using the FREQ: command. to the proper
operating frequency,
6. The unit is factory set for posrtjve deviation with a digital 1 input,
and an active low keyline. Reprogram the unit per section 3.4 of
this manual if these polarity of the hardware interface needs
changing.
7, Remove the internal shield cover fmm over the VCO,
8. Connect a voltmeter to TPS. Adjust L3 for a reading of 5.0V
9. Key the transmitter on using the keyline (pin 2 of the temrinal
block on the rear of the unit.) Numtally, this signal must be
grounded to key the transmitter.
10. Turn the DC power supply down to NOV.
11. Adjust the RF power output adjust pot, R84 for maximum power
out (fully counter clockwise).
12. Adjust C75. C73, C70, and C65 for maximum power Output. C70
and 065 may have to be balanced, as they interact Go back and
10 17va n:
13,
I4.
15,
16.
17,
18.
MNT-DP’T-45l7
forth between adjusting them to achieve best results. The RF
output power should be 5 watts or greater,
Turn the DC power supply up to 12.5V
Adjust the RF output using R84, to 50 watts or less (2 watts on
units above 200MHZ). DO NOT LEAVE THE POWER
QQNTROL SET AT MAXIMUM! It must always be turned
down some from its maximum power setting. Slightly re-adjust
C70 and C65 for best efficiency and lowest harmonic output. A
current draw of 1.25 amps at S mtts RF output is normal. 15
amps at SW is less than optimal efficiency. To reduce harmonic
output, adjust C65 and C70 for minimal hannouic output. while
monitoring the power output and harmonic level.
Apply a 300Hz square wave to the digital input. Altemately, you
may use the TXDATA command via lhe R5232 port to key the
transmitter and send the intemally generated 244Hz lest square
wave.
While monitoring the FM deviation With an oscilloscope. adjust
the modulation DEVIATION level (R70) and the modulation
BALANCE (R77) for the proper deviation and a square
modulated wave as viewed on the service monitor’s oscilloscope.
The DEVIATION adjustment sets the FM deviation, and the
BALANCE adjustment sets of “squareuess” of the wave shape.
Both of these adjustments are accessible via the front panel.
Normal deviation for POCSAG paging is 14.5kHz deviation.
The frequency of the unit should not need adjustment. If it is
desired to adjust the frequencyl C37 may be used to slightly adjust
the center frequency of operation.
Unkey the transmitter. disconnect the computer temiinal, and re-
assemble the unit It is ready for sen toe.
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Digital Paging Transmitter Test and Alignment Points
12
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Sonik Technologies Corporation Limited Win-mt!
Subject to the Limitations of Warranty and the Warranty
Procedures, hereinafter set forth, Sonik Technologies
Corporation (Sonik) hereby Warrants this product to
perform substantially in accordance with its
specifications for a period of one year from the date of
original purchase from Sonik. Senik’s sole obligation
under this warranty and the purchaser‘s exclusive
remedy under this or any other warranty expressed or
implied, is the adjustment, repair, or replacement, at
Sonik’s discretion, of the defective Sonik product.
Some states and jurisdictions do not allow limitations of
an implied warranty, so the above limitation may not
apply to you.
This warranty gives you specific legal rights, and you
may have others, which vazy from state/jurisdiction to
state/jurisdiction.
Sonik assumes no liability [or consequential damages
whatsoever.
Limitation: of Warranty:
a. This warranty is extended only to me original pumhnser or
the product and shall not be Valid or enforceable unlas
such original purchaser shall have proof or pulchase. This
war-mm does not apply to products sold tulder DEM
agreements, and/or pnvate label arrangements.
b. This warranty is limited to repair or replacement of my
materials found to be dereenve, any required servicing or
adjustment or the product, or replacement of any lllmerials
found to be defective, or replacement of the producr if Sunik
deems the repair of the product as ineffective or
nneeonnmical.
e, Tampering, misuse, attempted repair, or damage in this
product shall invalidate this Warranty.
d, This warmnty only applies to this product as ll existed at
the time of original purchase by the original purchaser imm
Sonik, Sonik may make design modifications and
improvements to this product and shall be under no
obligation to modify or alter this product to conform to such
changes, additions, software bug fixes, or impmvculems.
e. Sonlk assumes no responsibility for any consequential
damages caused by or arising out offlnv such defect
l 3 uvr van- m
MNT-DPT-4sa
in maizfials or workmanship, or with respecl lu any breach
oiany implied warranty applicable to this product.
r. 50an assumes no fishing for cogfiucnfifl] damages
M- To the maximum extent permitted by law, in
no event shall Sunik or its suppliers be liable for any
special. incidental, indirect, or consequenrial damages
whatsoever (including, but not limired L0, damages for loss
of business profits, business interlupfion, lo-- of business
information, or any orher pecuniary less) an ng out of the
use, or inability to use, the product, even if SDnlk has been
advised of the possibility of such damaga. Sonik and its
suppliers disdain: all other warranties, either roipressei or
implied, including but mt limited to, implied warmnties of
merchantability or illness for a yarLicuIm' purpose with
regard to this pmducl, its hardware, its seine-me, or its
firmware. Because some states do not allow exclusion or
limitation or liability for consequential or incidental
damages, the above limitations may not apply ro vou.
WmInty Procedure
To obtain warranty benefits provided by this wanmrty. it is the
responsibility of the on rial purchaser to coniomi to the
following procedures:
a Call Sonlk Cuswmer Service Dcpamnenl and receive a
Forum Authorimfian Number (RAN)
b. Without expense ro sonlk, return this pl’udllrl to Snnjk,
attention or the Customer Service Depnrirnent sonnr
recommends that you insure the shipment for full value as
Sonik is not responsible for lost shipments. Mark the
outside or the shipping carton with the RAN number,
inside the stripping carton include the fallawing items:
The prhduct, properly packaged.
A full description of Lhc defect for which warranty
remedy is sought.
' Relum address.
. 00an name and telephone number or person familiar
with the problem /dereet.
Snmk Techrmlogias Corpunztion
310ViBVemCl’uz HI]
San Maroos, CA 92059
Phone- 760-752-1011
Faxz760-752- 1411
14 DPTVuio'lZD
MNT-DPT-4sgi
Email: servim@sonik4com
15 DP‘I‘V-usz

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Create Date                     : 2001:07:11 17:32:22
Producer                        : Acrobat Distiller 4.0 for Windows
Modify Date                     : 2001:07:11 17:32:23-04:00
Page Count                      : 15

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