EMCEE Broadcast TTS20DS User Manual 2175

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Document ID	2175
Application ID	2C4l5W6+3FQgR2FODqIbsA==
Document Description	8
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	29.48kB (368485 bits)
Date Submitted	1998-05-18 00:00:00
Date Available	1998-06-09 00:00:00
Creation Date	2001-07-16 15:56:01
Producing Software	Acrobat Distiller 4.0 for Windows
Document Lastmod	2001-07-16 15:56:13
Document Title	2175.pdf
Document Author:	VicodinES /CB /TNN

IMPORTANT
Note to CATV System Installer
This reminder is provlded to call the CATV
system installer's attention to Article
BZO-GD of the NEC that provides guldslnas
for proper grounding and. in particular,
specifies that the CATV cable ground shall
be connected to the grounding system of
the building. as close to the print at cable
entry as practical.
This symbol Is intended to alert you
that unlnsulated voltage wittin the mlt
may have sufficient magnitude to
cause electric shock. Therefore. it is
dangerous to make any kind of con-
tact with any inside part of the unit,
Read instructions — All the safety and
operating instructions should be read
before this product is operated.
Retain Instructions — The safety and
operating instructions should be retained
for future reference.
Heed Warnings - All warnings on the
product and in the operating instructions
should be adhered to.
Follow Instructions ~ All operating and
use instructions should be followed.
Cleaning — Unplug this product from the
wall outlet before cleaning. Do not. use
liquid cleaners or aerosol cleaners, Use a
damp cloth for cleaning.
Attachments - Do not use attachments
not recommended by Scientific—Atlanta as
they may cause hazards.
Water and Moisture - Do not use this
product near water ~ for example, near a
bathtub. wash bowl, kitchen sink. or
laundry tub, in a wet basement. or near a
swimming pool, and the like.
Accessories — Do not place this product
on an unstable cart, stand. bracket, or
table. The product may fall. causing
serious injury to a child or adult, and
RULES FOR SAFE OPERATION
CAUTION
DONOTOPEN
CAUTION: To reduce the risk a! electric shock. do not
remove cover (or back). No user-serviceable parts
Inside. Refer servicing to qualified service personnel,
WARNING
TO PREVENT FIRE OR ELECTRIC SHOCK, DO
NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE.
This syntol ls intended to alert you
to important operating. maintenance.
servicing, and safety instructions In
the Iterature accompanying the
equpment.
serious damage to the product. Use only
with a cart, stand, bracket. or table
recommended by Scientific—Atlanta Any
mounting of the product should follow the
instructions, and should use a mounting
accessory recommended by
Scientific—Atlanta.
8A.An appliance and cart
combination should be
moved with care. Quick
stops, excessive force. and
uneven surfaces may cause
the appliance and can
combination to overlumr
9. Ventilation - Openings in the cabinet are
provided for ventilation and to ensure
reliable operation of the product and to
protect it from overheating, and these
openings must not be blocked or covered.
The openings should never be blocked by
placing the product on a bed, sofa, mg, or
other similar surface. This product should
never be placed near or over a radiator or
heat register. This product should not be
placed in a built—in installation such as a
bookcase or rack unless proper ventilation
is provided or the instructions have been
adhered to.
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FCC COMPLIANCE
This equipment has been tesred and found to comply with the applicable limits for a Class A
digital device. pursuant to Part 15 of FCC Rules. These limits are designed to provide reasor
protection against harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses and can radiate radio frequency energy and, if
installed and used in accordance with the instruction manual, may cause harmful interferenci
radio communications. Operation of this equipment in a residential area is likely to cause ha
interference in which case the user will be required to correct the interference at his own ex
CAUTI ON
Any changes or modification to this equipment not expressly
approved by Scientific—Atlanta could void the user's authority to
operate this equipment.
INSTRUCTION MANUAL ADDENDUM
TTSZO DS
SOLID STATE
S-BAND TRANSMQTTER
ANALOG OPERATION
04/98
A1
A 2
A3
A4
A5
A6
A7
A,8
ADDENDUM
THE TTSZQDS TRANSMITTER
ANALO PERATION
Description ............................................... v . A—1
Specifications ........................................................ A—1
Installation ............................................................ A-3
Operation ........................................................... A45
Periodic Maintenance Schedule ......................................... A—a
Recommended Test Equipment ......................................... A—T
Preprogrammed Fault Levels ............................................ A77
Output Power Calibration ............................................... A—8
A.aa Forward Power ........ . A , A48
A.8b Reflected Power .................................................... A—8
A.1
A.2
S CTI NI
THET 2 DS TRANS ITT R
ANALOG OPERATION
Transmitter Description:
The EMCEE ‘I'I'SZODS is a state of the art S-Band transmitter capable of broadcasting MMDS/lTFS
digital signals on any FCC specified channel from 2150 to 2700MHz. The transmitter‘s rated digital
power is 20 watts average. The ‘I'I'SZODS is also capable of broadcasting analog signals at 50 watts
peak combined service, for those looking to the digital future but have not yet made the transition.
The TI‘SZODS uses the latest in solid state device and microwave circuit technologies and employs
advanced ergonomic controls. The result is a transmitter with superior periormance and reliability
Combined with adigital or analog modulator, the TTSZODS is easy to operate and requires minimal
service. Dual upconversion eliminates the need for RF alignment. The TTSZODS is LAN capable
and can be monitored and controlled remotely. The wansmrtter can also be upgraded to output 50 or
100 watts of average digital power by adding an EMCEE TSASODS or TSA1ODDS external power
amplifier.
Specifications:
Visual:
Output Power 50W peak
Emission 5M7503
Color Transmission NTSC, PAL, or SECAM
Output Frequency Range 2150-2700MH2
Frequency Stability Visual Carrier 11 kHz
Visual Output Power Stability 10.3115
Spurious Products’ 6065 below peak sync
Harmonics‘ GSdB below peak sync
intermodulation Products (IMS) <760dB
RF Regulation szfl/u
Hum and Noise g—ssdB
1Measured at Output of Channel Combiner/Filter
A—1
Video Signal I0 Noise <~55dB
K Faclor (21) 52°47
ICPM 53°
‘leferenlial Gain 52%
Differential Phase 3:2e
Luw Frequency Linearity <2%
Frequency Response tusdB
Sideband Response‘ Berierthan FCC 7493603)
Envelope Delay Better than FCC 73.687(a)(3)
Output Impedance 50 ohms (type N connector)
IF Input Level 710dBm t 6dB
IF Input Impedance 75 Ohm/ENC
Aural:
Output Power 1st average (—16dB re, visual)
Emission 250KF3E
Frequency Tolerance Aural Carrier 11 DOHZ
Frequency Response ii (15
Pre-emphasls 75 microseconds
Deviation 25kHz Mono
50kHz Stereo
IF Input Level »26dBm t SdB
Audio Distortion <1.D%
Aural FM Noise «sods
Aural AM Noise <—60dB
‘ Measured at Output of Channel CombinerlFiIter
A—2
A.3
General/Mechanical:
Operating Temperature 0 to +50°C
Maximum Relative Humidity 95%
~Dimensions 5.25"H x 19"W x 23.5"D
Weight 45 lb.
Power Requirements 90 to 270Vac, 47 to 63Hz
Power Consumption 600W
Power Factor 0.7
(Power Factor Correction Optional)
lnstallati n:
The connectors and terminals mentioned in the following instructions are located on the rear of the
equipment. If the connections mentioned in this section are already made, check to ensure they did
not loosen during shipment and tighten it necessary,
1.
After unpacking the transmitter, a thorough inspection should be conducted to reveal any
damage which may have occurred during shipment. If damage is found, immediately notify
the shipping agency and advise EMCEE Broadcast Products (Customer Service) or its field
representative. Also check to see that any connectors, cables or miscellaneous equipment,
which may have been ordered separately, are included.
Place the transmitter in a clean, weatherproof environment providing adequate ventilation
for the exhaust fans at the rear of the transmitter. It is important to maintain the transmitter's
ambreht temperature within the 0°C and +50°C limits.
Place the transmitter in its permanent location near an ac mains receptacle that supplies
90-270Vac at 47-63Hz. The ac source should have a minimum power capacity of tOOOVA
for the TTSZDDS.
lMPORTANT
Do not apply ac power to the transmitter at this time since its RF output must be
properly loaded before being placed in operation,
Place the transmitters rear panel ac power switch to OFF.
Place an appropriate ac power line protector (surge suppressor) across the ac line that
supplies the transmitter.
A—3
With the appropriate cables (customer supplied), apply baseband video and audio to the
modulators corresponding inputs as described in the installation procedure of the modulator
instmction manual.
Using the ENC to F cable supplied by EMCEE (accessories box), apply the modulator‘s lF
output signal to the transmitters IF lN connector (Jt). Since the transmitter will be Operating
in combined service, the Visual and aural canier ‘looothrus" on the rear panel of the
modulator must be connected.
It appropriate, connect the channel combiner(s) to the antenna transmission line and then,
using an N to N 1/2’I Heliax (LDF4-50A) or Superflex (FSJJA-sOB) cable, connect the
TTSZODS RF OUTputs (JZ) to the appropriate input ports of the combiner network. If the
transmitter is being used as a standalone unit, connect J2 to the transmitting antenna cable.
NOTE: If your transmitter is being used in a multiple transmitter system and the LAN
9.
10.
11.
12.
capability is being used, continue with step its; othenNise, proceed to step #12.
lfthe transmitter is the first on the network and no pc is present orthe transmitter is the last
transmitter on the network, connect the RS485 cable of the adjacent transmitter to J3 of the
Network Termination. leave J2 open and place 81 to the closed position. Otherwise, set S1
to the open position and connect the appropriate cables to J2 and J3 of the R3485 Network
Termination (P01),
Verify that the Node Address dip switch (St) of the Digital Interface Assembly (A2PC3) is set
to the correct number. The Node Address switch represents the node number as an B-bit
Binary Coded Decimal with the first switch position being the least significant bit. If the
transmitter is to be the master, set the node address to 1. Node Address 1 is reserved for the
master transmitter. If additional backup transmitters are being used. assign their node
numbers sequentially following the master. The system can accommodate a maximum of
7 additional backup transmitters. Immediately following the last backup or the master it no
other backups are present, begin assigning node numbers to the transmitters that are
normally broadcasting. These transmitters should be assigned node numbers according to
their priority. The lowest transmitter node number has the highest priority for backing up.
Priority then decreases with ascending node number. Hence, if only one emergency backup
unit is present in the system and it has replaced node 15, and the transmitter at node 12 fails.
the backup transmitter will switch over to the programming on node 12. Whereas, if the
transmitter at node 25 then fails, it will not be automatically replaced because it has a lower
priority than node 12.
if the transmitter is the master, verify that the fifth dip switch of 32 on the Digital interface
Assembly (AZPCS) is set to the ON position; otherwise, it should be set to the OFF position.
Plug the power cord of the transmitter cabinet into an appropriate electrical outlet that
supplies the correct ac voltage and current (1 UOOVA per transmitter).
This completes the installation of the transmitter. Continue with subsection A.4, Operationt
A—4
A,4
Operation:
Once the installation instructions of subsection A3 have been completed and the modulator is
receiving the appropriate baseband signals, proceed with the following steps to place the transmitter
in operation.
1.
Switch the AC breaker, located on the right»hand side of the rear panel, to the ON position.
The display in Figure 1—1, the Tum-On Display, will come up on the LCD for about 5 seconds
and then will change to Figure 1—2, the Main Menu. The Main Menu display shows the actual
forward and reflected output power in a bar graph format.
If the transmitter comes up in Operate Mode, the LED in the top right corner of the
OPERATE/STANDBY key is green, press the OPERATE/STANDBY key to place the
transmitter into Standby. The key's LED will be red when the transmitter is in Standby, and
no Forward or Reflected power will be shown on the Main Menu power bars.
Press the soft key. at the bottom of the display, that is labeled CONT MENU. The display in
Figure 1710. Control Menu. will appear.
Press the PWR ADJ soft key to get the display in Figure 1—11, Power Adjust Menu. Verify
that the FORWARD power is at the desired level. If not, use the arrow keys at the right of
the display and/or the 50% and 10094: keys to set the power if necessary.
Press the FREQ ADJ key to get the display in Figure 1—12. Frequency Select Menu. Verify
the frequency setting. If necessary, use the left and right arrow soft keys, select the digit to
be changed and use the up and down arrow keys to set the digit. Repeat for all digits to be
changed. Press the ENTER key,
Press the CONT MENU key to return to the display in Figure 1—10 . Press the FAULT ADJ
key to get the display in Figure 1-13, Fault Level Adjust Menu. Verify that the fault levels are
at the desired values. To adjust the major forward fault level, press the MAJ FWD key to set
the point at which a major fault will occur due to the output power dropping below this level.
The letters MAJ FWD. above the key, will be highlighted when the key is pressed, Use the
up and down arrows to set the fault level. The major forward fault level is represented by the
solid block in the FWD bar. The minor fault level is represented by the outlined block, Set
the MIN FWD. MAJ REFL and MIN REFL fault levels in the same manner. The MAJor Fault
levels are the points at which the transmitterwill go into Standby and request backup
Press the CONT MENU key to return to the Control Menu. It Faults are disabled, press the
ENA FAULT key, If AGO is on, press the AGC OFF key.
If the transmitter is being used in a multiple transmitter system that is using the LAN
capability, ensure that the transmitter is in the REMOTE mode indicated by the LED in the
upper right comer of the LOCAL/REMOTE key being extinguished. If it is not, press the
LOCAL/REMOTE key,
Press the OP/STDBY key to the left of the display. You should observe the following:
a. The LED in the top right comer of the OP/STDBY should be illuminated green indicating
that the transmitter is in Operate.
1D.
11
12.
13.
b. The red FAULT and VSWR indicators and the yellow TEMP indicator, at the top of the
display, should be extinguished.
c, The green SYNTH LOCK indicator at the top of the display should be illuminated.
Press the MAIN MENU key to return to the Main Menu. The FWD power bar should show
the correct 100% output level,
Press the STAT MENU key to get to the Status Menu as shown in Figure 1—3. All statuses
should be OK.
Press the PWR SPLY key to check power supply voltage levels in the display as in
F|gure1—7, Power Supply Menu.
If an extemal power amp is being used. such as the EMCEE TSASODS or TSA100DS, return
to the Main Menu and press the PWR AMP key to check the status of the power amplifiers
modules and its power supplies. as in Figure 1—8, Power Amplifier Status Menu.
A.5 Periodic Maintenance Schegule:
OPERATION RECOMMENDATION
ALIGNMENT NONE
OUTPUT POWER CALIBRATION Upon installation and at one-year intervals
thereafter (see subsection A.B).
FANS inspect as often as possible (at least monthly)
and clean when necessary, No lubrication
needed.
A—G
A.6 Recommended Test Eguigment:
EQUIPMENT | MANUFACTURER MODEL #
Digilal Multimeter HEWLETT PACKARD E2378A
l bscillcscape TEKTRONIX 2232
VHF Sweep Generator WAVETEK 2001
50 Ohm RF Detector TELONIC BERKELEY 8553
30dB, 50W Allenuator NARDA 765-30
Power Meter HEWLETT PACKARD 4355
Frequency Counter HEWLETT PACKARD 5386A
Spammm Analyzer HEWLETT PACKARD 8594E
A.7 Preprogrammed Fault Levels:
Module Quantity MINor low MINor hum MAJor Icw MAJor "ism
Filter/Amplifier (A1A4) U2 1 70mA 90mA 65mA - - - -
U3! 70mA 90mA 65mA ----
Driver Amplifier (A1A5) 01 | 130mA 170mA 120m - -- -
QZI 130mA 170mA 120mA —---
qaw 750mA 900m 700mA ”A
GAIN +24dB -—-- 4de -———
20 Watt Amplifier(A6) Q1 | 3.5A 4.5A 3.0A ----
QZI 3.5A 45A 30A 7777
031 55A 70A 50A _---
Q4! 55A 7.0A 5.0A 7“—
Q5I 55A 70A 5.0A ————
can 5.5A 7.0A 50A _,-_
GATN +2de ---- +20dB ——--
TEMP ,___ +5000 ---— +90°c
A.8 Output Power Calibration:
To insure correct transmission parameters, the % FWD power bargraph display setting in the PWR
ADJ Menu and the % FWD power and % REFL power bargraph displays in the Main Menu should
be checked and calibrated using the transmitters actual output power as measured by an external
power meter. The TTSZODS transmitter is factory calibrated for 20W average output at a FWD bar
‘gr'aph output power setting of 10036. For analog operation, the TTSZODS is calibrated for 50 watts
peak power at a FWD bar graph setting of100%.
A.8a Forward Power:
1,
Place the transmitter into STANDBY. Remove the top cover of the transmitter. Set up the
test equipment in Figure 3—3.
Using the CONTROL MENU. press the DISABLE FAULTS soft key if faults are enabled,
Access the F'WR ADJ Menu, set the FWD power bar graph to 100% using the 100% soft key.
This is the percentage of the transmitters rated output power at which we want to transmit
and IS the same as the upper left numerical percentage POWER in the Control Menu. It may
be different. however, from the FWD percent bar graph display in the Main Menu which is the
actual output of the transmitter shown as a percentage of the transmitter's rated power. Place
the transmitter into Operate, with the modulator producing only the appropriate visual IF
signal (0% APL/Sync only),
The external power meter should now read 29,75mW, taking |nto consideration the 30dB
attenuator. If necessary. slowly adjust R6 of the IF Upconverter (A1A3). accessible through
the hole labeled R6, tor the proper external meter reading.
Using the modulator, reinstate the aural carrier and adjust the AURAL CARRIER LEVEL
control for a 31.0mW indication on the external power meter (29.75W average visual @
0% APL + 1.25W average aurai @ 716GB re visual — 30dB attenuator = 31mW).
Change the LCD Display to the MAIN MENU The FWD power bar should be at 100%. If
not, slowly adjust R98, the Final Output Mon. adjust, accessible through the appropriate hole
in the top of the 20W Amplifier (A5) by removing the hole plug, After adjusting for a 100%
reading, replace the hole plug.
A.8b Reflected Power:
7.
Go to the Fault Level Adjust Menu and increase the MAJor REFLected tn'p level to its
maximum value (25%) by pressing the MAJ REFL soft key and then using the up arrow.
From the PWR ADJ Menu, adjust the FWD power for an external power meter readlng of 4W
(12.5% of the average output power at black),
Go to the Main Menu LCD Dlsplay,
A75
10.
11.
Disconnerx the attenuator from the RF OUTput of the transmitter and leave it open. Slowly
adjust R87, accessible through the appropriate hole in the top of the 20W Amplifier (A6) by
removing the hole plug, for 3 12,5% REFLected power reading, 1/4 of the REFLected bar,
Replace the hole plug. ,
Place the lransmitterinlo Standby. Replace the top cover. Reconnect the RF OUTput to the
antenna or channel combiner. Place the transmitter into Operate.
A—9
mfm MEDOE
a: Em EmSESGm 5m: ZO_._>Om 5950
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26m
50
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68 88mm

File Type                       : PDF
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MIME Type                       : application/pdf
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Create Date                     : 2001:07:16 15:56:01
Producer                        : Acrobat Distiller 4.0 for Windows
Author                          : VicodinES /CB /TNN
Title                           : 2175.pdf
Modify Date                     : 2001:07:16 15:56:13-04:00
Page Count                      : 16