User`s manual

CVEQ 100 & SVEQ 100 • Installation and Operation
Installation and Operation, cont’d
2-12
CVEQ 100 & SVEQ 100 • Installation and Operation
2-13
Front Panel Features and Operation
The following figures show the front panel configurations of the
CVEQ 100 and SVEQ 100.
VIDEO LINE DRIVER
CVEQ 100
GAIN
EQ
1
2a 3
CVEQ 100 front panel
S-VIDEO LINE DRIVER
SVEQ 100
GAIN
EQ
GAIN
Y
C
1
2a 3 2b
SVEQ 100 front panel
a
Power LED — When lit, this LED indicates power is applied to
the line driver.
Ç
Gain potentiometer (CVEQ and luma of SVEQ) — Use an
Extron Tweeker (a small screwdriver) to rotate this pot to
adjust the CVEQ 100's gain and the SVEQ 100's luminance gain
when the line driver is connected to long output cables. The
adjustment range is -1 dB to +3 dB. The default is unity (the dot
position). See "Gain adjustment control" in this chapter.
É
Gain potentiometer (Chroma of SVEQ)— Use an Extron
Tweeker to rotate this pot to adjust the chroma gain when the
SVEQ 100 is connected to long output cables. The adjustment
range is 0 dB to +10 dB. The default is unity (The dot position).
See "Gain adjustment control" in this chapter.
c
Equalization (EQ) potentiometer — Use an Extron Tweeker
to rotate this pot to adjust equalization when the line driver is
connected to long output cables. The adjustment range is
0 dB to +7 dB. The default is set to 0 dB (the dot position). See
"Equalization (EQ) adjustment control" in this chapter.
Gain adjustment control
The gain control adjusts picture brightness by compensating
for signal amplitude loss caused by cable resistance. To adjust
the output gain, view the display while using a small, flat-blade
screwdriver to rotate this two-turn potentiometer. This control
produces a gain adjustment ranging from -6 dB to + 6dB. Select
the setting that gives the best picture brightness.
You can judge the adjustment visually by looking at the display.
For a more precise setting you can use an oscilloscope or a
waveform monitor connected to the far end of the output cable,
and adjust the gain so that the level at the waveform monitor is
100 IRE.
Equalization (EQ) adjustment control
The equalization control adjusts the output level and peaking
to get a sharp picture. This adjustment changes the level and
peaking of the output signal to compensate for capacitance
caused by up to 1000' (300 m) of Extron MHR cable.
Use a small, flat-blade screwdriver to rotate this control.
View the display and select the setting that gives the sharpest
picture. For a more precise setting you can use an oscilloscope
or a waveform monitor connected to the far end of the output
cable, and adjust the equalization so that the color burst ranges
between -20 IRE and +20 IRE.
N
The EQ control is a potentiometer with a soft mechanical
stop at the high and the low end. If you have reached
the high or low end of the adjustment, the potentiometer
makes a clicking sound as you turn it, and no change is
apparent on the display.