■ Agile Modulator JB862-A
|
Features 45~870MHz agile frequency.
High stability webbing filter. Spurious suppression
≥60dB. Fourfold PLL frequency lock. IF input and
IF output are equipped on rear panel. High quality RF
hybrid ensures high output level and low distortion.
LED on front panel displays channel number. Power-off
memory functioned. 19', 1U.
RF
|
Unit
|
Specifications
|
Frequency Range
|
MHz
|
45~870MHz
|
Output Level
|
dBμV
|
≥115 (adjustable), 75Ω
|
Spurious Suppression
|
dB
|
≥60
|
Webbing Restrain
|
dB
|
≥25dB
|
Frequency Accuracy
|
KHz
|
≤5
|
Output Reflection
|
dB
|
≥10
|
Picture-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 adjustable
|
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
(modulation degree @ 87.5%)
|
Input Impedence
|
Ω
|
75Ω
|
Modulation Degree
|
-
|
87.5%
(adjustable)
|
Differential Phase
|
-
|
≤3°
|
Differential Gain
|
-
|
≤3%
|
Chroma Luminance Delay
△t
|
ns
|
≤45ns
|
Frequency Response
|
dB
|
≤2dB
|
Flatness
|
dB
|
≤2dB
|
K Coefficient
|
-
|
≤4%
|
S/N
|
dB
|
≥50
|
Audio
|
Input Impedance
|
KΩ
|
≥10 (imbalance)
|
Input Level
|
dBm
|
0
|
Pre-Aggravate
|
uS
|
50
|
Distortion
|
-
|
≤0.5%
|
Frequency Response
|
dB
|
≤1.5
(adjustable)
|
Audio S/N
|
dB
|
≥55
|
Connector
|
Audio / Video Input
|
-
|
RCA connector
|
RF / IF
|
-
|
F connector
|
Power
|
Power Supply
|
V
|
AC 220V±10%
|
Power
|
W
|
max. 8W
|
Mechanical
|
Dimensions
|
mm
|
483x240x44 (19', 1U)
|
Weight
|
kg
|
5.0
|
|