■ Fixed Channel Modulator TZD-4
|
Features 45~870MHz frequency range.
Audio / video dual phase lock. High quality SAW
filter ensures excellent linearity. High output level,
spurious suppression ≥65dB. IF input and output port on
rear panel. Video/Audio RCA input port on rear panel.
RF test port (-30dB) on front panel. Wide range SMPS.
RF
|
Unit
|
Specifications
|
Frequency Range
|
MHz
|
45~870MHz
|
Output Level
|
dBμV
|
≥115
|
Spurious Suppression
|
dB
|
≥65
|
Frequency Accuracy
|
KHz
|
≤5
|
Video Audio Separation
|
KHz
|
6500±5 KHz (PAL-D/K),
6000±5 KHz (PAL-I) 5500±5 KHz
(PAL-B/G),
4500±5 KHz (NTSC)
|
V/A Rate
|
dB
|
10~20dB
|
IF Output Frequency
|
MHz
|
38 MHz (PAL-D/K),
38.9 MHz (PAL-B/G),
45.75 MHz (NTSC)
|
IF Output Level
|
dBμV
|
90
|
Video
|
Input Level
|
Vp-p
|
≥0.7Vp-p
|
Input Impedance
|
Ω
|
75
|
Modulation Degree
|
-
|
87.50%
|
Differential Phase
|
-
|
≤5°
|
Differential Gain
|
-
|
≤5%
|
Chroma Luminance Delay
△t
|
ns
|
≤45
|
Frequency Response
|
dB
|
≤2
|
Flatness
|
dB
|
≤2
|
K Coefficient
|
-
|
≤4%
|
S/N
|
dB
|
≥50
|
Audio
|
Frequency Response
|
dB
|
≤1.5
|
Audio S/N
|
dB
|
≥55
|
Connector
|
Audio / Video Input
|
-
|
RCA connector
|
RF / IF
|
-
|
F
connector
|
Others
|
Power Supply
|
V
|
AC 110V±10% or AC 220V±10%
|
Power
|
W
|
max. 6W
|
Dimensions
|
mm
|
483x110x44 (19', 1U)
|
Weight
|
kg
|
3.0
|
|