Telephone Hybrids - DHY-04V
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Rear View |
DHY-04V Single Automatic 4G Hybrid with HD Voice, AES/EBU & Analogue I/O With Ethernet
The DHY-04V VoLTE Hybrid is used on a cellular (mobile) phone network, and provides HD Voice quality calling over 4G, as legacy 3G and 2G mobile services in many countries are now being switched off. The DHY-04V can accept a SIM card in the rear panel slot and by connecting a suitable GSM antenna, it can receive and make high quality broadcast calls over the cellular network, converting the 4G call to the 4 wire audio signal to and from a connected mixing console. The module used in the DHY-04V can take and make calls on any 4G GSM network, and can fallback to 3G and 2G if required.
It is ideal for studios in remote locations, for OB vans and trucks on the move, and in emergency situations where a telephone landline can’t be guaranteed, the DHY-04V offers outstanding performance.
The DHY-04V has all features of the DHY-04 together with some additional front panel indicators. There are two LEDs, one for SIM enabled and one for GSM Network availability. Additionally there is a push button which allows the mobile signal level to be displayed on the meter LEDs.
HD Voice:
The signal quality can vary during the call. Normally the hybrid will be used in a fixed location (even OB trucks are normally stationary), so the position of the antenna can be refined for best signal quality. However the far end may be from a cellular phone, so may vary in quality and which can lead to dynamic bandwidth changes during a call. It is mostly true that network providers will only handle HD Voice on 4G and 3G networks though, in theory, it should also be compatible with enhanced 2G networks.
The use of HD Voice is dependent on 3 criteria:
- The method has to be supported by the network, (and this may be limited by your contract), and when different networks are involved in the call, the interoperability between the networks.
- The actual equipment used by both ends of the call must be HD Voice compatible. Both these requirements will be established on call connection, which leads to the third criteria.
- The signal quality can vary during the call. Normally the hybrid will be used in a fixed location (even OB trucks are normally stationary), so the position of the antenna can be refined for best signal quality. However the far end may be from a cellular phone, so may vary in quality and which can lead to dynamic bandwidth changes during a call. It is mostly true that network providers will only handle HD Voice on 3G networks though, in theory, it should also be compatible with enhanced 2G networks.
Features:
- Multi band support for 4G, 3G and 2G.
- Rear panel 4G, 3G or 2G GSM SIM card insertion.
- Ethernet web server control and configuration.
- Front panel speed-dial buttons with redial.
- Signal strength LED display.
- LEDs for SIM enabled and GSM network availability.
- Automatic operation.
- Combined AES/EBU and analogue input and output.
Technical Specification DHY-04V |
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Audio Specification Analogue Audio I/O: |
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| Input Impedance - Line Mode (Clean Feed): |
10kΩ balanced 0dB |
| Input Impedance - Conferencing: | 10kΩ balanced 0dB |
| Input Impedance - Microphone Mode: | 2kΩ balanced |
| Input Level Gain Range: | -6dB, 0dB, and +6dB adjusted by 3-position front panel switch, +10dB jumper |
| Microphone Level Gain Preset: | From 65dB to 35dB |
| Maximum Input Levels: | Line +26dBu, mic -24dBu |
| Clean Feed Limiting Input: | -4dBu for CTR21 setting, other values available, dependent on the actual country setting selected on the DHY-04V |
| Output Impedance - Line Out: | 50Ω balanced floating 0dBu |
| Output Impedance - Conference/Record: | 50Ω balanced floating 0dBu |
| Output Level Gain Range: | -6db, 0dB, and +6dB adjusted by 3-position front panel switch |
Digital Audio I/O: |
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| Input Impedance: | 110Ω ±20% balanced |
| Output Impedance: | 110Ω ±20% balanced |
| Sample Frequency Range: | 30 - 100kHz (i.e. including 32kHz, 44.1kHz, 48kHz, 64kHz, 88.2kHz & 96kHz) |
| Signal Level: | 2V/7V peak to peak min/max |
| Analogue Equivalent Level for Full Scale Digits: | +18dBU |
| Maximum Input Level: | 0dBFS but internally limited to -6dBFS |
| Maximum Output Level: | -6dBSFS |
Cellular Connection: |
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| Module Type: | LTE Cat.1 4G with 3G/2G fallback & VoLTE/3G/2G |
| Approvals Information: | FCC/ISED, PTCRB (North America) RED/GCF (Europe) |
| Output Power | Class 3 (0.2W, 23dBm) @ LTE |
| Ring Detector Sensitivity: | Off, 1, 2, 3, or 4 rings |
Power Supply: |
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Power to DHY-04V, S&T Universal 12W power supply: |
90 to 250V AC; 47-63Hz; fused 1A anti-surge fuse |
Connections: |
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| Mic/Line/AES-EBU Input: | XLR 3 pin female, with push-button mic/line selection |
| Line/AES-EBU Output: | XLR 3 pin male |
| GSM Antenna: | SMA socket |
| Conferencing or Record Audio: | RJ45 socket |
| Remotes: | 9-way D-type socket |
| Ethernet: | RJ45 socket |
| RS232 Serial: | 9-way D-type socket |
| Power: | IEC mains (CEE22) |
Accessories |
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| Accessories Order Code: | Description: |
| DHY-04VCON | Front panel conversion kit, DHY-04VS to DHY-04V |
| DHY-04VSCON | Front panel conversion kit, DHY-04V free standing to DHY-04VS 19” (48cm) rack-mount front |
| DHY-04VTCON | Front panel conversion kit, DHY-04V or DHY-04VS, to DHY-04VT 19” (48cm) rack-mount front |
| DHY-04VPCON | Front panel conversion kit, to DHY-04V & DHY-04 Twin Rack Mounted |
Physical Specification: |
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| Order Code: |
Description: | Height: | Width: | Depth:* | Total Nett Weight: |
Total Gross Weight: |
| DHY-04V (Raw): | Automatic digital GSM hybrid TBU, free standing |
4.5cm 1.8” |
21.8cm 8.6” |
17.5cm 6.9” |
1.4kg 3lbs |
2.2kg 4.8lbs |
| DHY-04V (Boxed): | 6cm 2.4” |
34cm 13.4” |
27cm 10.6” |
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| DHY-04VS (Raw): | Automatic digital GSM hybrid TBU, rack mounted |
4.5cm (1U) 1.8” (1U) |
48.3cm (19” rack width) |
17.5cm 6.9” |
1.45kg 3.2lbs |
2.3kg 5lbs |
| DHY-04VS (Boxed): | 6.8cm 2.7” |
58.8cm 23” |
27cm 10.6” |
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| DHY-04VT (Raw): | Twin automatic digital GSM hybrid TBU, rack mounted |
4.5cm (1U) 1.8” (1U) |
48.3cm (19” rack width) |
17.5cm 6.9” |
2.80kg 6.2lbs |
4.4kg 9.7lbs |
| DHY-04VT (Boxed) | 6.8cm 2.7” |
58.8cm 23” |
27cm 10.6” |
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| *Depth is measured from the front to the end of the connectors fitted to the back of the unit. | ||||||
