E SERIES 1200
Installation Instructions
© 2001, C HANNEL V ISION ™
234 F
ISCHER
A
VENUE z
C
OSTA
M
ESA
, CA 92626
(714) 424-6500
z
(800) 840-0288
z
(714) 424-6510
FAX
http://www.channelvision.com
z
Channel Vision
CVT1mini-II
!
C A U T I O N
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,
DO NOT REMOVE COVER.
PROPER VENTILATION REQUIRED.
NO USER-SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONAL.
Products to be installed by certified dealers only.
Certification Requirements: Must be professional installing dealer, pass certification test and familiar with TV and antenna systems. Call 800/840-
0288 for Channel Vision Training Manual and certification test.
Tested To Comply
With FCC Stan-
FOR HOME OR OFFICE USE
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try and correct the interference by one or more of the following measures:
•
Reorient or relocate the receiving antenna.
•
Increase the separation between the equipment and receiver.
•
Connect the equipment into an outlet a circuit different from that to which the receiver is connected
•
Consult the dealer or an experienced radio/TV technician for help.
Thank you for choosing Channel Vision!
Our E-1200 is the finest miniature digital RF modulator available today and accepts one audio/video input for modulation onto the channel of your choice. Channel Vision’s digital circuitry provides for simple installation and years of trouble-free performance. The E-1200 offers the widest channel range in the class (UHF 14-78 and Cable 65-135) and includes the highest power output (30dBmV) providing a strong signal for long cable runs. A built-in audio impedance adjustment is also included for true stereo audio loop through.
Simply follow the installation instructions below and you will enjoy the convenience of Channel Vision for years to come!
Installation Instructions
for UHF. channel. We recommend the use of a block filter (model
#3102) to provide “clean” channels for modulating to. access the UHF/CATV jumper.
CW2 for antenna (14-78). It is pre-set to the cable band. button for three seconds until power LED on front flashes then press CH- or CH+ to select the channel. NOTE: Up and down buttons are in increments of one.
Channel Vision broadband combiner. (see diagram)
System Design Considerations
Sophisticated home "networks" involving many TV sets are feasible with the CVT modulator, but care must be taken to design an optimum TV signal distribution system.
TV sets are designed for signals around 10dBmV. Signals below
0dB result in weak, fuzzy, snowy pictures.
Signals above 10dBmV may overdrive older TV sets which don't have modern automatic gain controls. An inline attenuator (pad) can be used to reduce these signals, and to balance radically different signal strengths at all your TV's.
Signal strength decreases with coax cable length and through connectors, splitters, and combiners. It's important to determine how much cable and what in-line devices you'll be using and adjust your input signal levels with amplifiers at the front end or in-line on your network to compensate for the line losses. (The charts on the back of these instructions will help you calculate likely losses through coax cable runs and splitters).
In-line amps are powered through the coax cable and can be used to achieve modest signal strength gains; more powerful a/c powered amps offer more amplification (and usually adjustable gain and tilt too). Your system should provide 10dBmV to every TV (maximum is
15.5dBmV, per the FCC).
Reverse isolation is used to prevent the modulator signal from leaking out to the antenna or cable input. Reverse isolation is accomplished by placing an amplifier between your antenna or cable
E Series 1200 Basic Setup
3102 Filter
Channel Vision
MULTI ROOM VIDEO TECHNOLOGY
CVT - 15PIA
Cable or
Antenna
HS-2
HS-8
To TV's
AV In
Modulator
RF Out
Satellite Receiver
FCC Regulations – the Cable TV Act
“Cable home wiring” is the cable wiring located inside a Cable TV subscriber’s home or apartment that has been installed by a cable operator or its contractor. It does not include such items as amplifiers, converters, decoder boxes or remote control units.
After a subscriber voluntarily terminates cable service, the cable operator may take one of two action:
1. Leave the home wiring in place.
2. Notify the consumer that it will remove the wiring unless the
consumer purchases it from the cable operator on a per-foot re
placement cost basis.
If the wiring was previously transferred or sold to the subscriber, the subscriber owns it; and the cable company cannot remove it or restrict its use, regardless of the reason for service termination.
If the subscriber does not already own the wiring and declines to purchase it from the cable operator, the cable operator may remove the home wiring within 30 days of the subscriber’s refusal. The cable company must remove the wiring at no charge to the subscriber, and must pay the cost of any damage caused by removing the wiring.
To leave the wiring inside and remove the wiring outside a subscriber’s home, a cable operator may, for single unit dwellings, sever the cable approximately 12 inches outside the point where the cable enters the outside wall of the subscriber’s home.
For multiple unit dwellings, the cable operator may sever the wire approximately 12 inches outside the point where the cable enters the subscriber’s individual dwelling unit, except in cases of “loop-through” or other similar series wire configurations that are not covered by the home wiring rules.
If the cable company fails to remove the wiring within 30 days of the subscriber’s refusal to purchase it, the cable operator forfeits its right to the wiring and may not remove it or restrict its use at any later time.
A cable operator will not be held responsible for any signal leakage that occurs from the home wiring once the cable operator ceases providing service over that wiring. company input and the CVT combiner. This prevents the CVT signal from propagating back up the input line.
Another way to prevent leakage from your system is to cap all unused coax cable ports on you network with appropriate terminators.
Bandpass filters stop unwanted frequencies while passing all others along.
They're handy if a channel you want to use for a CVT source is already in use.
Taps are used to redirect a portion of a signal from the "main" trunk line while passing the remaining signal strength through. For example, a 12dBmV tap would pass 29dBmV from a 30dBmV trunk line signal and pass the remaining
18dBmV to a branch line. (Minor signal loss of 1dB would occur in the trunk line leaving 29dBmV.)
Demodulators are used to demodulate the output of a cable box converter, making it possible to assign the cable signal to any channel (cable boxes usually limit your choices to channel three or channel four). Use a demodulator to "condition" the cable signal before assigning it to a CVT input line.
Adjustments
Video Level Adjustment: Adjust the incoming video source base band level.
Use only to increase brightness and balance the channels for consistent contrast.
Channel Up/Down: Changes the modulated channel. Press and hold Select for 2 seconds or until front light blinks to allow channel up/down to work.
Channel
Cable/UHF
73/22
74/23
75/24
76/25
77/26
78/27
79/28
65/14
66/15
67/16
68/17
69/18
70/19
71/20
72/21
Push
Factory Preset
Up 8
Up 9
Up 10
Up 11
Up 12
Up 13
Up 14
Up 1
Up 2
Up 3
Up 4
Up 5
Up 6
Up 7
Channel
Cable/UHF
88/37
89/38
90/39
91/40
92/41
93/42
94/43
80/29
81/30
82/31
83/32
84/33
85/34
86/35
87/36
Push Channel Push Channel Push
Up 15
Cable/UHF
95-99/42 Not Used
Cable/UHF
118/61 Down 18
Up 16 100/43 Down 36 119/62 Down 17
Up 17
Up 18
Up 19
Up 20
Up 21
Up 22
Up 23
Up 24
Up 25
Up 26
Up 27
Up 28
Up 29
101/44
102/45
103/46
104/47
105/48
106/49
107/50
108/51
109/52
110/53
111/54
112/55
113/56
Down 35
Down 34
Down 33
Down 32
Down 31
Down 30
Down 29
Down 28
Down 27
Down 26
Down 25
Down 24
Down 23
120/63
121/64
122/65
123/66
124/67
125/68
126/69
127/70
128/71
129/72
130/73
131/74
132/75
Down 16
Down 15
Down 14
Down 13
Down 12
Down 11
Down 10
Down 9
Down 8
Down 7
Down 6
Down 5
Down 4
114/57 Down 22 133/76 Down 3
115/58
116/59
117/60
Down 21
Down 20
Down 19
134/77
135/78
Down 2
Down 1
Channel up and down buttons are in increments of one. The E-1200 is factory set for CATV 65.
System Installation Checklist
screen TV's. Remember, Uncle Sam doesn't like more than 15.5dB of signal going into any TV.
signal loss per 100' of RG6.
Splitters should be 5MHz to 1GHz, and amps should be 40MHz to 1GHz. frequency spectrum (i.e. UHF or cable). snow“. No lines or interference. frequencies the modulator will be assigned to and keep any potential interference out of the system. Model 3102, cleans up channel 64, 84, 105 and above.
"active" channels.
There will always be a drop in antenna/cable signal strength when combining a modulator to an existing system (because of insertion the an existing a signal, to have strength at the so one not degrade and cause
Loss Key_______
Coax
RG6 per 100' 4dB
RG59 per 100' 5dB
Splitter
HS-2
HS-3
HS-4
HS-6
3.5dB
5.5dB
7dB
9.5dB
HS-8 11dB
Taps - Pass Thru -1dB
Suggested dB level @ TV
8~15dB
Maximum of 15.5dBmV per
FCC Regulation loss with combiner). combining signal with modulated make sure equal signal the point of combiner signal does the other beat
Trouble Shooting
Trouble shooting any system can make or break the entire installation. Here are the most common problems and solutions. After trying these solutions, call 800/840-0288 for 24 hour technical assistance. Calls before 8am and after 5pm pacific standard time will be returned by the technician on call.
Snowy Picture : No Modulation
This is a problem of the TV and the modulator not "talking" to each other.
Cable TV or antenna? If the unit uses dip switches to set the channel band, was the unit powered down during or after the switches were reset to the proper band? If the unit uses a jumper check for proper placement.
"Air" for UHF channels or Cable for Ultraband channels . The
TV will have an on screen set-up menu or a switch for this function. Also make sure the modulated channel isn't blocked out by auto-programming. To check for the TV being set to the wrong band, go to the equivalent channel on the other band (i.e. to check 65 cable try 14 UHF). Add 51 channels for antenna connection to cable channels.
Black Picture : No Modulation
In this case, the TV and the modulator are "talking" to each other.
The video signal is not being passed through the system. i.e. VCR. outputs directly into the video inputs on the TV. Verify video source is working. frequencies.
10. When possible, use the lowest frequencies available for the modulated channels. Lower channels (frequencies) have lower signal loss on the cable runs.
11. When in doubt, run the signal a little high to the television and use an attenuator to lower the signal strength going into the TV.
Attenuators may be combined (i.e. two -3dB attenuators. will equal -6dB).
12. Make sure to use a well shielded coax of either RG-6 Quad or
RG-11 for long trunk runs.
13. Use RG59U Coax for composite/baseband video signals only.
14. Combine the modulator into the video distribution system as far
"up-stream" as possible.
15. If the system needs to be amplified use the amplifier as far "upstream" as possible.
A) Picture goes to snow, problem is between video source and inputs on the modulator.
B) Picture stays black, hook up the modulator. directly to a TV eliminating all the components of the system and check the picture.
Grainy Local Channels : Good Modulated Picture
channel feed directly to the distribution system and check TV
picture quality.
A) If the picture quality is good the insertion loss of the combiner for the modulator is degrading the local channel signal. Use a CVT-15PIA to compensate for the insertion loss.
B) The other alternative is to use a 6dB tap as the combiner, put the local channel feed on the pass through port for a minimal loss of signal connect the modulator to the tap off port.
C) If the picture is still bad, check for a bad connection where
leakage may occur or if the shielding braid is touching the center conductor.
Grainy Modulated Channel : Good Picture on the Cable
Channels modulated channels.
A) If the modulated channels are good, use a low pass filter to
"clean-up" the incoming frequencies to be modulated. disconnecting the local channels, evaluate signal loss of modulator through the splitters and cable length of the system. Amplify after the combiner if needed. combiner for leakage or the cable braid is touching the center conductor. modulator is turned to maximum output power. capability.
TV Won't Tune High Enough to get Modulated Channel to allow the TV to view a modulated channel on a channel through the external tuner. the TV will not work with the system.
Cable Company Box Won't Pass a Modulated Signal modulator is sending a signal the TV can receive. the modulated signal around the cable box. See schematic page.
Cable Company Uses All Available Channels for clean modulation (won't effect channels 95-99). or multiple channels.
Modulated Picture is Too Bright or Washed Out chassis located under the white cover plate above the channel select to the proper brightness. aimed at the sun or a reflection.
Modulated Picture is Too Dark
Loop Kit or loop through quad, set impedance matching switch or potentiometer
(termination switch) to 1
ΚΩ.
chassis located under the white cover plate above the channel select to the proper brightness.
3
Ω
.
Noise on the Audio before it enters the TV. the components and the modulator.
Audio is Too Low
Use a Y-Connector to combine the left and right audio before entering the modulator.
Herringbone in Picture on Modulated Channel
O u c h!!!
Disconnect modulator from local channels an check modulated channel.
A) If there is programming move the modulated channel.
B) If the picture is snowy, use a #3102-80 low pass filter to
block noise or data coming in from cable company.
C) Separate modulated channels by two channels.
Horizontal Bars Rolling Through TV Picture power into the system. Disconnect that component and check TV. If the hum bars stop, use a DC blocker down stream from that component to block the power from getting to the TVs. impedance mismatch by adjusting the video level adjustment pot.
Vertical Bars Rolling Through TV Picture
Check for AC power getting on the line. Use a ground breaker in line.
Black and White Lines on one Local Channel
Move modulated channel up to a new channel. If problem persists and all of the inputs of a multiple input modulator are not being used, check default channels on modulator to see if default channel is set to the same channel that the problem channel is set to.
Flashing at the Top or Middle of TV Picture down gain of modulator. amplifier. filter #3102-__ to fix problem.
Picture is Tearing
Possible impedance problem. Check that impedance switch is set to 75
Ω.
Ghosts on the Picture
1.
Ω
terminator model
2101. high isolation combiner, HS model combiner.
Channel Vision
Limited Warranty
Channel Vision Technology will repair or replace any defect in material or workmanship which occur during normal use of this product with new or rebuilt parts, free of charge in the USA, for two years from the date of original purchase. This is a no hassle warranty with no mail in warranty card needed. This warranty does not cover damages in shipment, failures caused by other products not supplied by Channel Vision Technology, or failures due to accident, misuse, abuse, or alteration of the equipment. This warranty extends only to the original purchaser. A purchase receipt, invoice, or other proof of original purchase date will be required before warranty repairs are provided.
Mail in service can be obtained during the warranty period by calling toll free (800) 840-0288 toll free. A Return
Authorization number must be obtained in advance and be marked on the outside of the shipping carton.
This warranty gives you specific legal rights, and you may have other rights (which vary from state to state). If a problem with this product develops during or after the warranty period, please contact Channel Vision, your dealer, or any factory-authorized service center.
Specifications:
Video Performance
Video
Audio
RF Carriers
NTSC
L&R Monaural/Stereo loop opt.
Spurious Output Rejection
Ultraband 469.25-859.25MHz
Channels UHF 14-78, Ultraband 65-135
(Exc. 95-99)
Audio Offset 4.5MHz
Sidebands Double
RF Output
Maximum 30dBmV
Gain Range Fixed
Video Output 1VPeak to Peak
Audio Output 1V RMS
Increments of one
Inside Carrier +12MHz Greater than 55dBC
Isolation Greater than 70dB
Inputs
Video
Audio
Connectors
0.4V-2.7V Peak to Peak
1V RMS
Video In RCA Female
Audio In RCA Female
RF Output F type female
Operating Temperatures
o
C to 50
o
C
Transformer Input
Input Voltage 115 VAC, 50/60Hz
Power 8 Watts
