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Multi-Standard Analogue TV Demodulator
Showman 1000
Getting Started
2008 dB Broadcast Ltd
17
Provisional Version 0.3
To use the Showman 1000 for the first time or check basic operation, proceed as follows:
1.
Applying mains power
Note:
There is no power on/off switch.
Connect (100 to 240VAC, 50/60Hz) at the IEC input of the unit. The two-line LCD panel
will illuminate and display an RF (IF) LEVEL bar graph (top line) and the currently tuned
channel number and/or frequency (bottom line).
Note:
This Top-Level Menu page is referred to in this manual as DEFAULT.
Tip:
Press the <ESCAPE> key repeatedly to return the LCD to DEFAULT.
2.
Using the RF Input
The RF Input has 75Ω nominal impedance. All connectors, co
-axial cables,
aerial/antennas or signal generato
rs should be 75Ω. Apply
an analogue television RF
signal of between 46 and 80dBμV (0.2 and 10mVrms)
to the RF IN connector.
Note:
The T.V. standard and frequency/channel of the RF signal must Showman 1000
settings.
3.
Setting or checking the TV Standard
From DEFAULT (See item 1 above) press
► ►
The T.V. Standard can now be viewed
Press <ESCAPE> to return to DEFAULT
To change TV standard:
From DEFAULT press: <ENTER> <ENTER>
▲ <ENTER>
Press
▲ or ▼ to select th
e required standard
Press <ENTER> to accept or <ESCAPE> to reject the selection
Press <ESCAPE> again to return to DEFAULT
Note:
For most standards, there are several
Channel Plans
, depending on region,
country or frequency band (VHF or UHF).
To change channel:
From DEFAULT press: <ENTER> <ENTER> <ENTER>.
Press
▲ or ▼ to select the required channel.
Press <ENTER> to accept or <ESCAPE> to reject the selection.
Press <ESCAPE> again to return to DEFAULT.
To change frequency:
From DEFAULT press: <ENTER> <ENTER>
▼ <ENTER>
Press
◄ or ► to highlight the frequency digits to be adjusted
Press
▲ or ▼ to adjust to the required value