Pico Macom A860 User manual

A860
Re-broadcast quality performance
specifications match those of
fixed channel modulators
Integrated BTSC Stereo (optional)
60 dBmV minimum output for optimum
carrier-to-noise performance
Precision SAW filter for superior adjacent
channel performance enables
drop-in channel expansion
State-of-the-art digital phase-locked loop
(PLL) design guarantees precise frequency
locking for solid drift-free operation
Superior design including automatic
band-splitting filters for excellent
carrier-to-noise ratio (>65 dB)
Bright LED bar graph provides
simple modulation set-up
Microprocessor tuning control provides
digital display with push-button channel
selection for ease of installation,
configuration and servicing
Rear panel interfaces accept baseband
video and three audio formats to provide
maximum installation flexibility
Composite and separate audio and video
IF loops allow compatibility with
encoders, ghost cancellers and
video override applications
MPX stereo loop provides encoded
stereo input and compatibility with
Emergency Alert equipment
IRC and HRC input and output offset
available for frequency setting in
systems using offset channels
The MACOM A860 agile modulator is a frequency agile audio/video professional re-broadcast grade, microprocessor controlled
CATV modulator. Attractive and easy to operate, the sleek design highlights the useful front panel modulation bar-graphs and
channel indicators. The simple push button tuning interface allows the A860 to be configured for CATV standard, HRC, and
IRC or North American broadcast channels with an RF output of 60 dBmV. The front panel output test point provides a quick
reference test point prior to channel combining equipment, saving time and service interruption during setup and maintenance.
The A860 features rear panel interface connections for input of NTSC video and monaural and discrete left and right audio. The
integrated stereo encoder (optional) will provide a BTSC stereo encoded output channel. MPX loop and 4.5 MHz (modulated) audio
input connections are provided to bypass the internal stereo encoder for compatibility with external units; additionally, the MPX
loop is useful when used with the EAS-12B emergency override system. A composite audio/video IF loop provides compatibility
with scrambling encoders, ghost cancellers, and IF override applications. The unit conforms to FCC Docket 21006 for frequency
accuracy. The MACOM line is backed by an industry leading 5-year limited warranty.
2Toll Free: 800-421-6511
Agile Modulator

www.picomacom.com 3
A860
Product Specifications
Front Panel
Rear Panel
RF Output
Frequency Range: 54-860 MHz
Level: 60 dBmV min
Level Adjustment: 20 dB
Impedance: 75 ohms
Frequency Stability: ±3 kHz
Audio/Video Ratio: -10 to -20 dB Adjustable
Output Return Loss: -18 dB
In Band Spurious: -62 dB
Out of Band Spurious: -65 dB
VSB Response: -60 dB min
C/N (In-Band): >62 dBc
C/N (Out-of-Band): >65 dBc
IF Output
Video Level: 38 dBmV
Audio Level: 22 dBmV
Composite Level: 35 dBmV
Video Stability: ±3 kHz
Audio Stability: ±2 kHz
Impedance: 75 ohms
4.5 MHz Input
Level: 37 dBmV
Impedance: 75 ohms
Video Input
Level: .7–1.0 V p-p
Frequency Response: ±1.0 dB max
Impedance: 75 ohms
Differential Gain: <2% typ
Differential Phase: <1° typ
Chrom / Lumin Delay: ±8 ns
Hum and Noise: -60 dB
Audio Input
Level – Mono: 0.5 V p-p – 1 V p-p
Level – Left Audio: 0.5 V p-p – 1 V p-p
Level – Right Audio: 0.5 V p-p – 1 V p-p
Frequency Response: ±1.5 dB max
Impedance: 600 ohms
Preemphasis: 75 µs switchable
MPX/BTSC Stereo
Level: 2.2 V p-p
Impedance: 500 ohms
Frequency Response: 1 dB, 50 Hz – 14 kHz
Total Harmonic Distortion: <0.3%
S/N: 75 dB
Separation: 35 dB, 50 Hz – 12 kHz
General
Power Input: 90-260 VAC, 28 W
Operating Temperature: -10°C to 50°C
Dimensions: 19˝(L) x 12˝(D) x 1.75˝(H)
Weight: 7.8 lbs.
Connectors: RF & Video “F” type
Audio: 600 ohms terminal strip
Ordering Information
A860 Agile Modulator
A860S Agile Stereo Modulator
Related Products
D860 Agile A/V Stereo Demodulator
EAS-12B Emergency Override System
C860 Bi-Directional Combiner
L860 Bi-Directional Launch Amplifier
DSP806 HDTV Agile Channel Processor