Cisco NTSC 9825M 9825S 50-870 MHz Modulators w 9815 Integrated Stereo Enc データシート
Pulsar MKII (BG) – TV Modulator
3
Specifications – continued
Typical Signal Specifications
Audio
Type of modulation
Type of modulation
F3
Amplitude response
0.5 dB (between 30 Hz to 15 kHz)
Distortion at 50 kHz dev.
£ 0.5%
S/N at 50 kHz dev.
³ 65 dB
Video
DC restoration
DC restoration
Sync tip or backporch
Luminance bar amp.
£ ± 1%
K2T
£ ± 2%
Luminance non lin.
£ ± 1%
Chrom. Lum. Delay
£ ± 25 ns
In band group delay tolerance
£ ± 35 ns
Chrom. Lum. Intermod.
£ ± -1%
Differential gain
£ ± 1%
Differential phase
£ ± 1°
Video S/N
³ 69 dB
Option Related Specifications
IRT stereo
Soundcarrier freq
Soundcarrier freq
33.4 and 33.16 MHz
Type of modulation
F3
Amplitude response
0.5 dB (between 30 Hz to 15 kHz)
Distortion
£ 0.5%
S/N at 30 kHz
³ 62 dB
Crosstalk at 1 kHz
³ 36 dB (stereo)
³ 65 dB (dual sound)
IF loops (vision before SAW and sound IF loop)
Connector
Connector
F-type, 75
W
Input & output levels
IFv : 46 dBmV
IFs : 34 dBmV
Aux IF input
Connector
Connector
BNC, 50
W (F-type optional)
Return loss
³ 18 dB
Input level
30 to 45 dBmV (AGC)
Switching
Manual or automatic
Intercarrier input
Connector BNC,
Connector BNC,
75
Return loss
³ 20 dB
Input level
37 to 50 dBmV (AGC)
Main scrambled, Aux unscrambled video input
Coupling
Coupling
main DC
coupled
aux
AC coupled and clamped
DC input level range
main
Backporch at ± 0.5 V
aux Not
relevant