Important Safety Instructions; Technical Specifications - Televes T.OX Serie Guía Rápida

TWIN MODULATOR

Important safety instructions

General installation conditions
• Before handling or connecting the equipment, please read this manual.
• In order to reduce the risk of fi re or electric shock, do not expose the equipment
to rain or moisture.
• Do not take the cover off the equipment without disconnecting it from the
mains.
• Do not obstruct the equipment's ventilation system.
• Please allow air circulation around the equipment.
• The equipment must not come into contact with water or even be splashed
by liquids. Do not place containers with water on or near the equipment if it is
not adequately protected.
• Do not place the equipment near sources of heat or in excessively moisture
conditions.
• Do not place the equipment where it may be aff ected by strong vibrations or
knocks.
• This symbol indicates that the equipment complies with the
requirements of CE mark.
NOTE: The complete user manual is available in the CD
that is provided with the product.
Technical specifi cations
Bandwidth:
Input level (75 ohm):
Video
Modulation depth:
Diff erencial gain:
Bandwidth:
Impedance:
Audio
Pre-emphasis:
Deviation (1KHz/1.7Vpp input):
Output frequency:
Impedance:
Output level:
Regulation margin:
RF output Level stability:
Pa/Pv distance:
IF frequency:
Frequency steps:
C/N (5MHz):
Power supply:
General
Consumption 24V:
- 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 defi ned for a maximum ambient temperature of 45°C (113ºF). Forced ventilation is used for higher temperatures.
Inputs/Outputs/Connections description
The unit (Fig. 1) is provided with:
1. RF input
2. RF output + 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 fi ltered, it is amplifi ed to achieve the specifi ed
output level.
It is also possible to control the unit via a PC as is explained in User manual.
0,00005 ... 5 MHz
1 Vpp
72,5 ... 90 %
< 4 %
0,04 ... 15 KHz
10000 ohm
50 μS
program. (see table)
46 ... 862 MHz
75 ohm
80 ± 5 dBμV
> 15 dB
± 3 dB
-12, -16 (prog.)
38,9 MHz
250 KHz (prog.)
> 56 dB
24V
300 mA
Diff erencial phase:
Chroma/luma Delay:
S/N ratio:
Flatness:
S/N ratio:
Flatness:
Input level:
Distortion (1KHz dev. ± 30KHz):
Return losses:
Audio carrier precision:
Video carrier stability:
Carrier ratio (MHz):
Band spurious level
46 ... 862MHz:
Through losses (46 - 862 MHz):
Protection index:
6
< 4°
< 100 ns
> 52 dB
< +1 dB
> 45 dB
< ±1 dB
>-15 <7 dBm
< 1 %
10 dB (14 typ)
VHF < 25 KHz
UHF < 50 KHz
VHF < 15 KHz
UHF < 30 KHz
4,5 / 5,5 / 6 / 6,5
55 dBc min. > 60 dBc typ
< 1.5 dB
IP20