HDMI Encoder, Multiplexer and DVB Modulator
HDMI Encoder, Multiplexer and DVB ModulatorHDM-9500
BLANKOM HDM-9500 combines 4/8 HDMI inputs, transport-stream multiplexing and RF modulation in one 1U chassis. Encoded local sources and incoming IP services can be organized into television multiplexes.
Ordering Guide
- Specify HDMI count, RF standard and carrier count, required codecs, IP ingest/output and ASI options
Technical Overview
HDMI encoding, service multiplexing and RF modulation are separate stages. Input resolution does not equal encoded output resolution: the H.264 specification accepts 1080p50/60 but lists 1080p25/30 as encoded output. Select the television standard and receiver codec support together.
The 9500 family offers four factory model combinations: four or eight HDMI inputs with DVB-C or DVB-T output. The technical table defines H.264 encoding and 1–13 Mbps per channel. Broader H.265 claims in general descriptions are not used as a confirmed feature of these models.
Multiplex planning must keep the sum of video, audio and signalling below the usable capacity of each RF carrier. PID remapping and PSI/SI generation organize the services, while IP mirror outputs allow compatible network distribution. Plan the RF level and cable losses for the installed network.
At a Glance
INPUT
- Physical inputs: 4/8 × HDMI
- IP ingest: 64/128 IP inputs according to configuration
OUTPUT
- Encoded output formats: 1080p25/30, 720p25/30, 576p25, 480p30
- RF capacity: 2/4 DVB-C or DVB-T carriers, depending on model
- IP output: 2/4 MPTS over UDP/RTP/RTSP; 1 × 1000Base-T
FEATURES
- Baseline video encoding: MPEG-4 AVC/H.264; 1–13 Mbps per channel; CBR/VBR
- Audio: MPEG-1 Layer II, LC-AAC, HE-AAC; AC-3 pass-through; 48 kHz, 24-bit
- Multiplex functions: PID remapping; automatic PSI/SI generation; up to 180 inputs per channel in PID-remapping specification
- Management and chassis: Web NMS, English interface, Ethernet firmware upgrade; 482 × 328 × 44 mm
Ordering Guide
- Ordering: Specify HDMI count, RF standard and carrier count, required codecs, IP ingest/output and ASI options
Key Features
- Baseline video encoding: MPEG-4 AVC/H.264; 1–13 Mbps per channel; CBR/VBR
- Audio: MPEG-1 Layer II, LC-AAC, HE-AAC; AC-3 pass-through; 48 kHz, 24-bit
- Multiplex functions: PID remapping; automatic PSI/SI generation; up to 180 inputs per channel in PID-remapping specification
- Management and chassis: Web NMS, English interface, Ethernet firmware upgrade; 482 × 328 × 44 mm
System Diagram
Manufacturer reference diagram. The complete topology and required accessories depend on the project.
Typical Applications
Hotel television headend
Encode local HDMI sources, combine selected IP services and distribute them to compatible televisions over the existing coax network. Select DVB-C or DVB-T according to the installed TV tuners.
Campus and institutional TV
Place institutional information and programme sources into planned multiplexes. Check the combined audio/video bitrate against each carrier capacity and reserve bandwidth for signalling.
Hybrid RF and IP distribution
Use RF for television receivers and compatible MPTS mirror streams for IP equipment. RF output level and Ethernet traffic require separate distribution calculations.
Model Comparison
| Model | Configuration |
|---|---|
| HDM-9504C | 4 HDMI / DVB-C / 2 RF |
| HDM-9504T | 4 HDMI / DVB-T / 2 RF |
| HDM-9508C | 8 HDMI / DVB-C / 4 RF |
| HDM-9508T | 8 HDMI / DVB-T / 4 RF |
Product Images
Family reference illustration; the depicted housing or model may differ from the selected variant.
Technical Specifications
| Parameter | Specification |
|---|---|
| Physical inputs | 4/8 × HDMI |
| IP ingest | 64/128 IP inputs according to configuration |
| Baseline video encoding | MPEG-4 AVC/H.264; 1–13 Mbps per channel; CBR/VBR |
| Input formats | 1080p50/60, 1080i50/60, 720p50/60, 576i50, 480i60 |
| Encoded output formats | 1080p25/30, 720p25/30, 576p25, 480p30 |
| Audio | MPEG-1 Layer II, LC-AAC, HE-AAC; AC-3 pass-through; 48 kHz, 24-bit |
| Multiplex functions | PID remapping; automatic PSI/SI generation; up to 180 inputs per channel in PID-remapping specification |
| RF capacity | 2/4 DVB-C or DVB-T carriers, depending on model |
| DVB-C profile | EN 300 429 / ITU-T J.83 A/B; Annex A 16/32/64/128/256 QAM; Annex B 64/256 QAM; 5–7 MSps |
| DVB-T profile | EN 300 744; 2K FFT; 6/7/8 MHz; QPSK/16QAM/64QAM; FEC 1/2, 2/3, 3/4, 5/6, 7/8 |
| RF tuning | 50–960 MHz; 1 kHz steps |
| IP output | 2/4 MPTS over UDP/RTP/RTSP; 1 × 1000Base-T |
| Management and chassis | Web NMS, English interface, Ethernet firmware upgrade; 482 × 328 × 44 mm |
| Power and environment | AC 110 V ±10% or 220 V ±10%, 50/60 Hz; operation 0–45 °C |
| Ordering | Specify HDMI count, RF standard and carrier count, required codecs, IP ingest/output and ASI options |
The listed values follow the official technical reference. Select the required model and configuration before ordering.
Technical FAQ
1. How many HDMI sources can be connected?
Physical inputs: 4/8 × HDMI.
2. Can external IP programmes be added?
IP ingest: 64/128 IP inputs according to configuration. Multiplex functions: PID remapping; automatic PSI/SI generation; up to 180 inputs per channel in PID-remapping specification.
3. Does 1080p60 input mean 1080p60 encoding output?
Input formats: 1080p50/60, 1080i50/60, 720p50/60, 576i50, 480i60. Encoded output formats: 1080p25/30, 720p25/30, 576p25, 480p30.
4. Which codec and bitrate are the confirmed baseline?
Baseline video encoding: MPEG-4 AVC/H.264; 1–13 Mbps per channel; CBR/VBR.
5. Which audio options are supported?
Audio: MPEG-1 Layer II, LC-AAC, HE-AAC; AC-3 pass-through; 48 kHz, 24-bit.
6. How many RF carriers are specified?
RF capacity: 2/4 DVB-C or DVB-T carriers, depending on model.
7. How do DVB-C and DVB-T profiles differ?
DVB-C profile: EN 300 429 / ITU-T J.83 A/B; Annex A 16/32/64/128/256 QAM; Annex B 64/256 QAM; 5–7 MSps. DVB-T profile: EN 300 744; 2K FFT; 6/7/8 MHz; QPSK/16QAM/64QAM; FEC 1/2, 2/3, 3/4, 5/6, 7/8.
8. What is the tuning range?
RF tuning: 50–960 MHz; 1 kHz steps.
9. Can the output also be used over IP?
IP output: 2/4 MPTS over UDP/RTP/RTSP; 1 × 1000Base-T.
10. What must be fixed in the ordering configuration?
Management and chassis: Web NMS, English interface, Ethernet firmware upgrade; 482 × 328 × 44 mm. Power and environment: AC 110 V ±10% or 220 V ±10%, 50/60 Hz; operation 0–45 °C. Ordering: Specify HDMI count, RF standard and carrier count, required codecs, IP ingest/output and ASI options.