Factors Affecting Quality of Results | Kramer Electronics 401DXL

1.2Factors Affecting Quality of Results

There are many factors affecting the quality of results when signals are transmitted from a source to an acceptor as described in Table 1:

	Table 1: Factors Affecting Quality of Results

FACTOR	EFFECT

Connection cables	Low quality cables are susceptible to interference; they degrade signal
	quality due to poor matching and cause elevated noise levels. They should
	therefore be of the best quality.

Sockets and connectors	So often ignored, they should be of highest quality, since "Zero Ohm"
of the sources and	connection resistance is the objective. Sockets and connectors must also
acceptors	match the required impedance (75ohm in video). Cheap, low quality
	connectors tend to rust, thus causing breaks in the signal path
Amplifying circuitry	Must have quality performance when the desired end result is high
	linearity, low distortion and low noise operation

Distance between	Plays a major role in the final result. For long distances between sources
sources and acceptors	and acceptors, special measures should be taken in order to avoid cable
	losses. These include using higher quality cables or adding line
	amplifiers.

Interference from	These can have an adverse effect on signal quality. Balanced audio lines
neighboring electrical	are less prone to interference, but unbalanced audio should be installed far
appliances	from any mains power cables, electric motors, transmitters, etc. even
	when the cables are shielded

	401Dxl

Configuration	Decoder / Switcher
Inputs	1 Composite Video, 1Vpp/75 ohm on a BNC,
	1 s-Video on a 4P connector, Y: 1Vpp/75ohm,
	C: 0.3Vpp/75ohm.
Outputs	1 s-Video on a 4P connector, Y: 1Vpp/75ohm,
	C: 0.3Vpp/75ohm.
Controls	Input selector Switch.
Video Bandwidth	3.7 MHz -3dB (CV in - YC out); >800 MHz -3dB (YC in - YC out).
Nonlinearity	0.5%.
Crosstalk	-56 dB @ 5 MHz.
Coupling	AC (CV to YC); DC (YC to YC)
Differential Gain	0.9 %.
Differential Phase	0.5 Deg.
K-Factor	2.1 % (Y/C to CV).
Luma S/N Ratio	69 dB.
Maximal Input	1.4 Vpp / 75 ohm, Composite; >4Vpp / 75 ohm YC.
Dimensions (W, D, H)	12 x 7.5 x 2.5 (cm)
	4.7" x 2.95" x 0.98" (W, D, H.)
Weight	0.3kg. (0.56 lbs.) Approx.
Power Source	12VDC, 90 mA.

Kramer Electronics Ltd.