Overview
GatesAir Intraplex IX-IPL-100MP IP Link MP
The Intraplex ® IP Link MPXp provides robust transport of your FM MPX composite signal over IP networks.Offering digital and analog MPX FM composite signal support as w ell as flexible sampling rates and sample sizes options. The IP Link MPXp codec optimizes IP network bandwidth utilization based on FM services being transported.
IP Link MPXp codecs are suitable for use in IP based Studio to Transmitter Links (STLs) as well as distribution networks. Support for IP multicast and multiple unicast streams enables one encoder to feed multiple decoders.
Features
• Single bidirectional FM MPX composite signal
• Support for both analog FM MPX composite and digital MPX over AES with bridging between digital and analog domains
• Redundant input MPX signal ports with automatic failover based on signal activity
• Redundant output MPX signal ports
• Independent signal level setting for each input and output MPX signal port
• Flexible sampling rates and sample size options to tailor IP WAN bandwidth. Can be configured as low as 1.64 Mbps bandwidth
• FM MPX signal port can be configured for audio sampling rates for an audio return path for applications not requiring bi- directional MPX
• Two channels of SCA mixing
• Three independent IP interfaces for redundant network operation
In Depth
The IP Link MPXp belongs in the IP Link family of codecs. Now FM MPX composite transport can have an unprecedented level of reliability and performance. At the hardware level, the N+1 redundancy with built in control for both MPX routers and data switches provide automatic synchronization of configuration and switch over capability. This reliability is further enhanced with optional hot-standby power supply.
With support for both digital and analog FM MPX composite signals, IP Link MPXp can bridge between either signal domain for enhanced interoperability with your FM equipment infrastructure.
By offering four bandwidths: 60, 74, 88 and 99 kHz and five sample sizes: 12, 14, 16, 20 and 24 bits, IP Link MPXp enables great flexibility in optimizing the IP WAN bandwidth based on the FM services to be transported.
IP Link MPXp provides monitoring capability to decode the audio and RDS data from either the input or output MPX signals. The analog audio is output on a front panel headphone jack.
Two SCA inputs allow subcarriers generators to be located at the MPX decoder. The SCA mixing function can be enabled per channel and injection gain is digitally controllable.
At the streaming layer, Dynamic Stream Splicing provides a set of networking tools for reliability, such as redundant streams with network and time diversity. The support of Forward Error Correction (FEC) and interleaving further enhances these capabilities. These tools can be intelligently combined to achieve reliability generally associated with T1/E1 circuit over less robust IP networks. Hitless operation can be achieved when multiple networks are available. The use of time diversity on redundant streams along with FEC and interleaving can provide protection against burst packet losses.
A built-in silence sensor and alarm enable IP Link codecs to offer a variety of automatic backup options. If the main link is lost, it can switch to a secondary feed.
Specifications / Documents
- Channels: One FM MPX composite signal encode and decode Two input and two output MPX signal ports for redundancy
- Front Display: Graphical front panel user interface - 3.2 inch display; 256 x 64 pixel, white monochrome OLED; six-button keypad; VU meters for each MPX signal port
- SynchroCast: Optional: MPX delay programmable up to 1 second with 1 microsecond accuracy
- Backup: Configurable for automatic backup to secondary incoming MPX stream
- Contact Closures:
- Eight input and eight output opto-isolated contact closures, with time-alignment to MPX streaming
- Contact inputs can transport state to peer or control stream state
- Contact outputs can receive state from peer or be tied to system alarms
- Hardware Redundancy: N+1 with integrated support of external switching equipment
- Connectors Rear panel:
- Ethernet: Three 10/100 Base-T, RJ-45
- MPX: Two BNC for analog MPX inputs and two BNC for analog MPX outputs
- MPX: XLR female for digital MPX over AES input and XLR male for digital MPX over AES output (AES output is optional)
- SCA: Two BNC for SCA inputs
- (All BNC connectors are 75 ohms, unbalanced)
- Contact Closures: D-sub, 26-pin female USB: Type A
- DC Power: Two pin screw terminal AC Power: C14 power inlet
- Front panel: Ethernet: one 10/100 Base-T, RJ-45, Audio Headphone: one ¼” stereo headphone jack
- GPS: External GPS: 10 MHz and 1 PPS BNC connectors, Optional: GPS receiver plug-in board kit with SMA connector for external GPS antenna (provided with kit)
FM MPX Composite
- Analog Bandwidth: 60, 74, 88, or 99 kHz for MPX transport or 15, 22 kHz for audio transport
- Frequency Response:
- 60 kHz bandwidth: 0.1 Hz to 60 kHz, -1 dB
- 74 kHz bandwidth: 0.1 Hz to 74 kHz, -1 dB
- 88 kHz bandwidth: 0.1 Hz to 88 kHz, -1 dB
- 99 kHz bandwidth: 0.1 Hz to 100 kHz, -1 dB
- All MPX bandwidths: 20 Hz to 53 kHz +/- 0.05 dB
- Total Distortion: (THD+N) Less than 0.003%
- Dynamic Range: Greater than 90 dB
- Signal Level Full scale analog MPX input/output: -6 to 18 dBu, user-settable in 0.5 dBu steps for input and 0.1 dBu steps for output
- Sampling Rate: 132, 162, 192 or 216 ksps for MPX transport or 32, 48 ksps for audio transport
- Sample Size: 12, 14, 16, 20, or 24 bit
- Input Impedance: Greater than 10 k ohms, jumper settable to 75 ohms
- Output Impedance: Less than 10 ohms, jumper settable to 75 ohms
SCA
- Channels: Two BNC inputs for SCA with 600 ohm impedance
- Injection Level Control: SCA mixing into MPX composite output. Gain from each SCA input to each MPX output is user settable from 20 to -64 dB in 0.5 dB steps. Maximum injection level is 3 dBu SCA mixing can be independently enabled for each SCA input to each MPX output
Monitoring
- Audio: Demodulation of mono audio from either MPX signal input or output
- RDS: RDS decoding from either MPX signal input or output of PI, PS, TA, TP, PTY, RT, and CT data
Streaming
- RTP Streams: Total of six streams: Unicast, multi unicast, and multicast Source IP address and UDP port verification at the receiver for security
- IPConnect: Optional: Enables transport of external IP packets as payload of IP Link RTP streams
- Redundancy: Automatic failover mode between Primary, Secondary and Backup streams
- Dynamic Stream Splicing: Optional: Enables multiple identical MPX streams to be sent across the IP network (or two separate IP paths, if available) and provides for hitless switching at the decoder
- Jitter Buffer: Programmable jitter buffer depth up to 1024 packets. Static or a utomatic jitter buffer adjustment
- Forward Error Correction: Multiple FEC schemes configured per stream with 25%, 50%, 66% an d 100% overhead selection
- Time Diversity: Time delay configured on per stream basis, used with redundant s treams for burst packet loss protection
- Interleaving: Configured per stream for mitigation of consecutive packet losses