Техническая Спецификация для Cisco PULSAR MKII - TV-Modulator (MN) (PAL)
Model 9825M Modulator, Model 9825S Modulator w/ Integrated
Stereo Encoder & Model 9815 Rear Interface Module (RIM)
Stereo Encoder & Model 9815 Rear Interface Module (RIM)
Model 9825M and Model 9825S Specifications
Video Specifications
Value
Differential Gain
≤ 1.5% (1% typical) at 87.5% modulation
Differential Phase
≤ 1.0° (0.5° typical) at 87.5% modulation
Frequency Response
± 0.5 dB, 10 Hz to 4.15 MHz (-1.5 dB maximum at 4.2 MHz)
Video S/N
≥ 70 dB from 10 kHz to 4.2 MHz, weighted
Chrominance -to- luminance gain inequality
≤ ± 4.5% (2.5% typical)
Chrominance -to- luminance delay inequality
≤ ± 40 nsec (-20 nsec typical)
Chrominance -to- luminance intermodulation
≤ ± 0.5%
Chrominance nonlinear gain
≤ ± 0.5%
Chrominance nonlinear phase
≤ ± 0.5°
K-factor – 2T Pulse
≤ 2.0% (1.0% typical)
Group delay response
Meets FCC Predistortion No. 73.687 for color transmission
ICPM
≤ 1.0° p-p
Mono Audio Specifications, Model 9825M
Value
Input level
-15 dBm to +15 dBm for 25 kHz deviation @ 400 Hz input
S/N Ratio
≥ 70 dB ± 25 kHz deviation (ref @ 400 Hz)
Frequency Response
≤ 0.5 dB p-p (0.3 dB p-p typical) from 30 Hz to 15 kHz (75
µsec pre-emphasis)
µsec pre-emphasis)
Total Harmonic Distortion
≤ 0.30% from 30 Hz to 15 kHz @ 25 kHz deviation
Stereo Audio Specifications Model 9825S
Value
Input Level (L, R, & optional SAP)
- 15 to +15 dBm for 100% modulation at 400 Hz input
Audio input impedance
600
Ω Balanced or high impedance (selectable)
Audio common mode hum rejection
≥ 40 dB
Frequency Response (left, right)
≤ ± 0.4 dB (30 Hz to 14.5 kHz) and ≤ -3 dB @ 15 kHz
S/N Ratio
≥ 68 dB at 100% input (reference @ 400 Hz & 0 dBm input)
Stereo Separation (10% to 100% EIM)
≥ 35 dB from 50 Hz to 14 kHz (typically 40 dB)
Distortion (left and right)
≤ 0.3% 30 Hz to 7.5 kHz at 100% input
Distortion (optional SAP)
≤ 0.5% 30 Hz to 5.0 kHz at 100% input
4.5 MHz Subcarrier output level
39 to 41 dBmV
RF Output Specifications
Value
Output frequency
50-870 MHz (fully agile)
Channel plans
Standard, IRC, HRC, Special Frequency Plans (SFP)
Frequency stability
≤ ± 5 kHz (with internal reference)
Combined C/N up to 137 channels
≥ 65 dB
Carrier phase noise
(Measured at 1 Hz bandwidth)
(Measured at 1 Hz bandwidth)
≤ -95 dBc @ 1 kHz offset
≤ -101 dBc @ 10 kHz offset
≤ -101 dBc @ 20 kHz offset
≤ -101 dBc @ 10 kHz offset
≤ -101 dBc @ 20 kHz offset
Output Level
+50 dBmV to +61 dBmV
Spurious Outputs
≤ -63 dBc (-65 dBc typical) relative to +60 dBmV video
carrier and audio carrier at +45 dBmV
carrier and audio carrier at +45 dBmV
Composite IF Specification
Value
Output Level
36 dBmV
± 2dB with video IF input level @ 47 dBmV
Vestigial sideband response
≤ -20 dB at channel edge
≤ -45 dB at adjacent video audio carrier frequencies and all
frequencies farther removed from channel.
≤ -45 dB at adjacent video audio carrier frequencies and all
frequencies farther removed from channel.
General Specifications
Value
Power Dissipation
Model 9825M 35 Watts
Model 9825S 39 Watts
Model 9825S 39 Watts
Operating temperature range
0
°C to 50°C (32°F to 122°F)
Shipping Weight
Modulator: 8 lbs (3.6 kg)
9815 RIM: 3 lbs (1.4 kg)
9815 RIM: 3 lbs (1.4 kg)