Holland Electronics HDD-1U User Manual
INSTALLATION MANUAL
Model: HDD
ATSC/QAM Digital to Analog Demodulator
Caution: These servicing instructions are for use by qualified service personnel only.
To reduce the risks of electric shock, do not perform any servicing other than that
contained in the operating instructions unless you are qualified to do so.
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1. PACKAGE CONTENTS
This packa ge contains:
One HDD ATSC/QAM Rack Demodulator
One HDD Installation Manual
2. PRODUCT DESCRIPTION
The HDD is an ATSC/QAM professional grade rack demodulator designed for cost effective
digital-to-analog conversion of an unencrypted 8VSB (Off-Air SD/HD TV signal) or QAM
unencrypted (digital CATV) RF signal to baseband NTSC video and left and right stereo
audio outputs. All of the 18 ATSC video formats including HD format can be received by the
HDD and converted to display on non-digital TV sets over analog channels with the use of a
modulator
3. SPECIFICATIONS
All specific at io ns ar e t y p ic a l
RF
１. Input frequency range 54– 806MHz (UHF)
54 – 860MHz (Cable)
２. Off-Air input channels 2-13 (VHF) 14-69 (UHF)
３. 8VSB input channel bandwidth 6 MHz
４. Data rate 19.392 Mbps.
５. Noise figure < 8dB
６. QAM input frequency range 2-135 (CATV)
７. QAM data rate 27 Mbps
８. QAM 256 data rate 38 Mbps
９. Input level range -7 dBm to -80 dBm
10. Adjacent channel rejection 60dB
11. Image rejection 40dB
12. Demodulation mode 8VSB, 8VSB MP @ ML/ 64QAM/256QAM
13. Symbol clock frequency 10.762 MHz
14. Input connector 75 ohm F-female
GENERAL
１. Video output (analog)
Frequency response 30Hz to 4.2MHz, +/-1.5dB
Video output level 1Vp-p +/- 0.2V
Impedance 75ohms
Connector type RCA
２. Audio L/R outputs
Impedance 10k ohms.
Level 1.4Vp-p +/- 0.2Vp-p
Frequency response 30Hz to 20kHz, +/-2dB
Distortion 1% max
Connector RCA
３. Power consumption
Power 6.5W / AC120V / 60Hz
Voltage Range AC110V ~ AC120V /57Hz ~ 63Hz
Dimensions: 483 x 86 x 44mm
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4. PRODUCT CONTROLS AND CONNECTIONS
Rear Panel
1. Antenna Input for Off-Air or CATV, F connector 5. AC Power Cord AC120V / 60Hz
2. Video Output, RCA connector 6. AC Power Socket for Extension
3. Audio Left / Right Output, RCA connector
4. Service Port
Front Panel
1. Message and Channel Display
2. CH+ button selects channel up
3. CH- button selects channel down
4. AIR/CABLE button selects OFF-AIR（8VSB）or CABLE（QAM）
5. SCAN button searches for incoming 8VSB or QAM signals.
6. ZOOM button selects a screen format of 4:3/16:9 letterbox, full, zoom or center.
7. AUDIO button selects Secondary Audio Programming, if available.（SAP）
8. LOCK LED indicates that a channel signal is locked
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