The VA-700 is a video distribution amplifier of
modular Eurocard construction having facilities for
cable equalisation, longitudinal hum reduction, and
clamping.
The input is a bridging loop through type to facilitate
connection to other equipment. Ten 75 Ω outputs are
provided on the rear with an additional output on the
front panel for ease of monitoring.
The input and output grounds are separated to
provide rejection of longitudinally developed hum.
The input is AC coupled and the output DC restored
with options for no clamping or clamping to the
internal or an external signal. The external clamping
facility may be used to provide correct DC restoration
in YUV & RGB signal situations. |
The video gain may be varied by ± 3 dB from the
front panel. Internal preset controls allow adjustment
of the amplifier frequency response, optimisation of
the longitudinal hum rejection, and stage output DC
voltages.
Cable equalisation is provided for up to 300 metres of
75 Ω high quality cable with adjustment via the front
panel.
The VA-700 may also be used as a pulse distribution
amplifier. (Only 6 outputs may be used for 4 Vp-p)
The VA-700 is manufactured on an extended
Eurocard board for mounting in IRT Eurocard
frames. |
