Holland Electronics HMA-860H - Manual (Page 3)

Specifications
Description
The HMA-860H is a microprocessor controlled
rebroadcast quality, phase locked loop synthesized,
frequency agile CATV television modulator. The
double conversion and superior SAW filtering provides
adjacent channel compatibility and spurious free
output. The HMA-860H provides 60dB output level
from 50 to 860 MHz including STD and HRC offset frequencies. The channelization configuration can
be changed by the up/down buttons located on the
front panel. The modulator is shipped with all internal
adjustments preset and FCC Docket 21006 offsets are
standard. The unit conforms to FCC Docket 21006
for frequency accuracy.
Features
• Double heterodyne conversion
•
SAW filtered
• Double I.F. loop; separate audio and video.
• Composite I.F. loop (45.75 MHz)
• Automatic band splitting filters for superior carrier to
noise ratio.
• BTSC 4.5 MHz stereo capability
• Supports HRC, IRC, frequency offsets
• Front panel -30dB test point
•
Five year warranty
Specifications
RF --------------------------------------------------------
Channels: 134 channels (2-135)
Frequency Range: 54 - 860 MHz
Output Level: 60 dBmV min., 62 dBmV typ. Ch. 2-78
57 dBmV min., 60 dBmV typ. Ch. 79-135
adjustable from front panel
Output Impedance: 75 ohm
Audio/Video Ratio: Adjustable -7 to -22 dB below video
carrier
Frequency Stability: ± 5 KHz in aeronautical band
Carrier to Noise (In-band): >60 dB
Spurious Output (A/V Ratio @ -15dB): In Band >65 dBc
Spurious Output: Outside Band (typical) >60 dBc
Audio/Video Ratio: Video 45.75 MHz
Audio 41.25 MHz
Video ---------------------------------------------------------
Input Level: 1 V p-p min. at 87.5% modulation
Input Level Range: 0.5 to 1.5 p-p
Input Type: Clamped video negative sync
Frequency Response: ±0.8 dB, 30 Hz to 4.2 MHz
Differential Gain: <5% (10 to 87.5% APL)
Differential Phase: <5°(10 to 87.5% APL)
Chrominance Luminance Delay: < ± 50ns
Hum and Noise: -60 dB @ 87.5% modulation
Video Signal to Noise: -60 dB minimum (weighted)
Audio --------------------------------------------------------
Baseband Input Impedance: 600 ohms unbalanced
Baseband Input Level: 0.5 Vp-p for 25 KHz peak deviation
Pre-Emphasis: 75 microseconds
Flatness: -1.5dB max. 15 Hz to 15 kHz
General -----------------------------------------------------
Power Input : 100 - 240 VAC 60 Hz
Operating Temperature: - 10℃ to +55℃
Dimensions: 19”W × 9.375”D × 1.75”H
Weight: 8 pounds
Connectors: All “F” type except RCA type for
baseband audio
NOTE: Meets FCC group delay pre-distortion correction for
color transmission.