CTL Comparison

NHD Series	NHD-CTL-Pro	NHD-000-CTL
100 Series
NHD-100-TX	✔	✔
NHD-100-RX	✔	✔
NHD-110-TX	✔	✔
NHD-110-RX	✔	✔
NHD-120-TX	✔
NHD-120-RX	✔
NHD-124-TX	✔
NHD-140-TX	✔	✔
NHD-150-RX	✔
200 Series
NHD-200-TX	✔	✔
NHD-210-RX	✔	✔
NHD-220-RX		✔
NHD-250-RX	✔	✔
400 Series
NHD-400-TX	✔	✔
NHD-400-RX	✔	✔
NHD-400-E-TX	✔	✔
NHD-400-E-RX	✔	✔
NHD-400-DNT-TX	✔	✔
NHD-400-TX-IW	✔	✔
500 Series
NHD-500-TX	✔
NHD-500-RX	✔
NHD-500-E-TX	✔
NHD-500-E-RX	✔
NHD-500-DNT-TX	✔
NHD-500-IW-TX	✔
NHD-510-TX	✔
600 Series
NHD-600-TX		✔
NHD-600-RX		✔
NHD-600-TRX	✔	✔
NHD-600-TRXF	✔	✔
NHD-610-TX	✔	✔
NHD-610-RX	✔	✔
Other Devices
NHD-0401-MV v1	✔

NHD-CTL-PRO Performance

NHD-CTL-PRO establishes signaling channels with all NHD transmitters and receivers to complete device configuration, control, upgrade and other functions. Therefore, the more NHD transmitters and receivers connected to NHD-CTL-PRO, the greater the overhead on NHD-CTL-PRO's CPU and memory performance.

On the other hand, NHD-CTL-PRO is also responsible for the forwarding function of preview steams. As shown in the image below, users can preview the stream of NHD transmitter on NHD Touch and NHD WebUI.

NHD-CTL-PRO provides two network ports. One is the AV port, which is usually in the same VLAN as the NHD transmitters and receivers and is specifically used to transmit audio and video streams. The other is the Control port, which is usually used to control the system, including connecting NHD Touch and NHD WebUI. Providing two network ports can effectively isolate media flow and control flow, providing a safer guarantee for NHD networking. Therefore, when NHD Touch and NHD WebUI need to preview the stream of the NHD transmitter, NHD-CTL-PRO is responsible for the forwarding of the preview stream. When the number of forwarded streams is greater, the performance overhead of NHD-CTL-PRO will be greater.

NHD-CTL-PRO forwards the preview streams

To sum up, the performance of NHD-CTL-PRO are mainly related to the number of connected endpoints and the number of preview streams forwarded.

The below table details the performance indicators of NHD-CTL-PRO for the networking of different NHD endpoints.

Type	NHD-CTL-PRO Performance
NHD-110 NHD-120	600 Endpoints + 400 Preview Streams (about 25 PAD, 16 streams each) 800 Endpoints+200 Preview Streams (about 12 PAD, 16 streams each) 1000 Endpoints+100 Preview Streams (about 6 PAD, 16 streams each)
NHD-400	600 Endpoints+400 Preview Streams (about 25 PAD, 16 streams each) 800 Endpoints+200 Preview Streams (about 12 PAD, 16 streams each) 1000 Endpoints+100 Preview Streams (about 6 PAD, 16 streams each)
NHD-500	600 Endpoints+100 Preview Streams (about 6 PAD, 16 streams each) 800 Endpoints+100 Preview Streams (about 6 PAD, 16 streams each) 1000 Endpoints+100 Preview Streams (about 6 PAD, 16 streams each)
NHD-600	150 Endpoints

1. The version of NHD-CTL-PRO must be V1.3.32 or later.

2. Endpoints include transmitters and receivers. Note that the above NHD-120 includes NHD-124- TX and one NHD-124-TX device needs to be considered as 4 endpoints for calculation.

3. When NHD-CTL-PRO manages NHD-500 series products, its performance is also limited by the preview stream bandwidth. The preview bandwidth is 8Mbps, so NHD-CTL-PRO can only support up to 100 Preview Streams due to 1G network port.

4. When NHD-CTL-PRO manages NHD-600 series products, its performance is limited by the SDVOE API server, therefore the maximum number of Endpoints is 150. There is no preview stream in NHD-600 networking due to SDVOE chip limitation.

If the scale of the project exceeds the capacity given in the above table, the NHD-CTL-PRO software needs to be deployed on the PC Server. The recommended configuration is as follows:

Type	NHD-CTL-PRO Performance
NHD-110 NHD-120	2000 Endpoints+400 Preview Streams (about 25 PAD, 16 streams each)
NHD-400	2000 Endpoints+400 Preview Streams (about 25 PAD, 16 streams each)
NHD-500	2000 Endpoints+100 Preview Streams (about 6 PAD, 16 streams each)
NHD-600	1000 Endpoints

1. The version of NHD-CTL-PRO must be V1.3.32 or later.

2. Endpoints include transmitters and receivers. Note that the above NHD-120 includes NHD-124-TX and one NHD-124-TX device needs to be considered as 4 endpoints for calculation.

3. When NHD-CTL-PRO manages NHD-500 series products, its performance is also limited by the preview stream bandwidth. The preview bandwidth is 8Mbps, so NHD-CTL-PRO can only support up to 100 Preview Streams due to 1G network port.

NHD-000-CTL Performance

NHD-000-CTL establishes signaling channels with all NHD transmitters and receivers to complete device configuration, control, upgrade and other functions. Therefore, the more NHD transmitters and receivers connected to NHD-000-CTL, the greater the overhead on NHD-000-CTL's CPU and memory performance.

NHD-000-CTL does not forward the preview streams

When using NHD-000-CTL to manage NHD endpoints, only NHD-Touch supports the preview function. Unlike NHD-CTL-PRO, NHD-Touch pulls the stream directly from the transmitter (as shown in the image above), so the preview stream does not need to be forwarded by NHD-000-CTL. Therefore, the performance of NHD-000-CTL has nothing to do with the number of preview streams, and the number of preview streams that NHD Touch can see is related to how many preview streams a single transmitter can support. Compared with the networking supported by NHD-CTL-PRO, when NHD Touch needs to preview the transmitter stream, it must be in the same VLAN as NHD-000-CTL, which results in the media flow and control flow not being completely isolated.

To sum up, the performance of NHD-000-CTL is related to the number of connected endpoints, the number of preview streams that NHD Touch can see is related to how many preview streams a single transmitter can support.

The below table details the performance indicators of NHD-000-CTL for the networking of different NHD endpoints.

Type	NHD-000-CTL Performance
NHD-100 NHD-200 NHD-110 NHD-400	400 Endpoints
NHD-600	40 Endpoints

1. The version of NHD-000-CTL must be V9.4.13(9.4.19) or later.

2. Endpoints include transmitters and receivers. Note that the above NHD-100 includes NHD-140- TX, and one NHD-140-TX device needs to be considered as 4 endpoints for calculation.

3. The performance of NHD-000-CTL has nothing to do with the number of preview streams. However, up to 4 preview streams of each transmitter is recommended when using NHD Touch to preview the transmitter streams.

4. When NHD-000-CTL manages NHD-600 series products, its performance is limited by the SDVOE API server, therefore the maximum number of Endpoints is 40. There is no preview stream in NHD- 600 networking due to SDVOE chip limitation.

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