Generation
IP Transmit (SFP B) [IP Mode]
[PHQXO-IP-NGT+PHQXO-IP-ENC+PHQXO-GEN (Qx IP)]
The ‘IP Transmit (SFP B)’ window is used to transmit the currently generated video standard signal as IP
video packets.
The tool can be used to simulate IP video network packet jitter introduced under a variety of network
conditions by providing the ability to adjust the transmission distribution profile.
The histogram shows the interval timing distribution of the packets being generated (each second) - that is:
the number of packets being generated each second, against the deviation of each packet interval from
the expected interval time. Transmission status information and prompts are also displayed at the bottom
of the window, and hovering over this status information reveals a tooltip detailing the ‘Current Transmit
Parameters’. (See Network Settings below for more information.)
Right-clicking in the window reveals a submenu.
Packet transmission can be switched on and off:
l Transmit > [On, Off]
The type of distribution profile can be selected, and the range of transmission packet intervals can be
adjusted. The adjustments are displayed in real-time, in the transmission histogram.
l Distribution Range > [slider +/- 0...492 clks]
l Distribution > [Uniform, Gaussian]
The submenu also provides the option to plot the number of transmitted packets on the vertical axis, in
either linear or logarithmic scale:
l Y-Axis Scale > [Linear, Log10]
Network Settings
IP, UDP, MAC, and SSRC network settings for packet transmission are set in the submenu, and can be
entered by keyboard or via the on-screen keypad when ‘Transmit’ is ‘Off’.
Transmission can be either multicast or unicast. The multicast group destination IP address, or the IP address
of the receive device (in the case of unicast) should be set as the destination IP address; as required:
l Dst IP Addr > [set IP address]
Page 22 PHABRIX Qx User Manual
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