evertz 7780D4-ASI, Quick Start Manual, Page: 15 / 26

7780M4-ASI / 7780D4-ASI
Quad ASI TDM-Mux/Demux
Revision 1.0
Page 11
6.2.1. Control
The Control section of the ASI IN 1 tab, enables the user to adjust the ASI IN controls. The following
items provide descriptions of the controls.
•
Reset Measurements: The Reset Measurements button allows the user to reset the Monitor
window.
•
Max Input Bandwidth (0-209 Mbits/s): This field requires a decimal value entry between 0 and
209. Setting this control caps the maximum bitrate that will be accepted on this input. ASI
streams which exceed this rate will be removed completely from the output. You can either
increase the value or reduce the ASI stream rate to avoid this problem.
"
Note: It is important to first consider the gross rate of all four inputs before
making any adjustments in a production environment. The maximum
transportable aggregate value of SDI compatible stream cannot exceed 270
Mbits/s. The maximum input of the four streams is 209Mb/s.
•
Input Enable: It may be necessary to totally disable an input in some situations, use this drop-
down box to select if the input should be enabled or disabled.
"
Note: ASI IN 1 should typically be enabled at all times. Input 1 will auto detect
the type of input as it can accept either ASI or SDI (the other three ports only
accept ASI). When SDI is detected the other inputs are automatically disabled
and the SDI bypasses onto the SDI line.
6.2.2. Monitor
•
Input Status: The status of the input is displayed in this field.
•
Total TS Bit Rate: This field displays the total bit rate for the entire stream (including NULL
packets).
•
Null Packet Bit Rate: This field displays the current bitrate of the NULL packets.
•
Useful Bit Rate: This field displays the actual bitrate in use (Total TS Bit Rate – Null Packet Bit
Rate) and reflects the actual bit rate currently being used by this input.
•
Number of Active PIDs: This field displays the number of PIDs detected in the stream.
•
Number of Continuity Count Errors: This field displays the number of continuity counts that
have been detected since the last “Reset Measurements” or reboot.
"
Note: This is particularly useful during troubleshooting to determine if the
packets are being dropped on the input.