TWIN MODULATOR
6
Inputs/Outputs/Connections description
The unit (
Fig. 1
) is provided with:
1.
RF input
2.
RF 2 CH TV (module A and module B)
3.
Powering BUS connectors
4.
Status LED
5.
Control BUS connectors
6.
Audio / video input signal connector (module A and module B)
7.
Programmer / PC connector
Introduction
The TWIN unit features two A/V inputs (modules A and B) which generate two
independent output channels.
The A/V inputs for each module (A and B) are modulated according to the TV standard
in an IF of 38.9 MHz.
The modulated IF signal is converted to any channel or frequency between 46 and 862
MHz and then, once filtered, it is amplified to achieve the specified output level.
It is also possible to control the unit via a PC as is explained in User manual.
Technical specifications
- The Power Supply Unit can power up to 16 Twin Modulator modules.
- Whenever the demand of power exceeds 4A (max. current for each output), it is necessary to distribute it between the two powering outputs of the PSU.
- The technical characteristics described are defined for a maximum ambient temperature of 45°C (113ºF). Forced ventilation is used for higher temperatures.
Video
Bandwidth
MHz
0,00005 ... 5
Differencial phase
°
< 4
Input level (75 ohm)
Vpp
1
Chroma/luma Delay
ns
< 100
Modulation depth
%
72,5 ... 90
Chroma/luma Delay
dB
> 52
Differencial gain
%
< 4
Flatness
dB
< +1
Audio
Bandwidth
KHz
0,04 ... 15
S/N ratio
dB
> 45
Impedance
ohm
10000
Flatness
dB
< ±1
Pre-emphasis
µs
50
Input level
dBm
>-15 <7
Deviation (1KHz/1.7Vpp input)
program.
Distortion (1KHz dev. ± 30KHz)
%
< 1
RF output
Output frequency
MHz
46 ... 862
Return losses
dB
10 (14 typ)
Impedance
ohm
75
Audio carrier precision
KHz
VHF < 25
UHF < 50
Output level
dBµV
80 ± 5
Regulation margin
dB
> 15
Video carrier stability
KHz
VHF < 15
UHF < 30
Level stability
dB
± 3
Pa/Pv distance
-12, -16 (prog.)
Carrier ratio
MHz
4,5 / 5,5 / 6 / 6,5
IF frequency
MHz
38,9
Band spurious level
46 ... 862MHz
dBc
55 min.
> 60 typ
Frequency steps
KHz
250 (prog.)
C/N (5MHz)
dB
> 56
Through losses (46 - 862 MHz)
dB
< 1.5
General
Power supply
V
24
Protection index
IP20
Consumption 24V
mA
300
Important safety instructions
Caution Statements
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with a dry cloth.
7. Do not block any ventilation openings. Install in accordance with the manufacturer’s
instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus
(including amplifiers) that produce heat.
9. Only use attachments/accessories specified by the manufacturer.
10. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or
sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus
combination to avoid injury from tip-over.
11. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has
been damaged in any way, such as power-supply cord or plug is damaged, liquid has been
spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or
moisture, does not operate normally, or has been dropped.
Warning
Reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture.
Apparatus shall not be exposed to dripping or splashing and no objects filled with liquids,
such as vases, shall be placed on the apparatus.
Safe operation
Should any liquid or object fall into the equipment, please refer to qualified personnel for
service.
Safe installation
Ambient temperature should not be higher than 45°C.
Do not place the equipment near heat sources or in a highly humid environment.
Do not place the equipment in a place where it can suffer vibrations or shocks.
Please allow air circulation around the equipment.
Do not place naked flames, such as lighted candles on or near the product.
Simbology
Equipment designed for indoor use.
The equipment complies with the CE mark requirements.
The product is EAC certified.
NOTE
: You have a complete User Guide on our website: www.
televes.com.
Links available at the end of this guide
.
