Comtech EF Data CDM-750 - Manual (Page 128)

CDM-750 Advanced High-Speed Trunking Modem Revision 2
Front Panel Operation MN-CDM750
5–50
Item Description
RxErrFrms
The total number of Baseband Frames received that contained errors with this
Modulation and Coding since the last clear.
Rx Frames
Drpped
The total number of Baseband Frames received at 16APSK or 32APSK but dropped
because the FAST Access Code for 16APSK or 32APSK is not enabled (since the
last clear).
After viewing the desired statistics screen(s), should it be desired to clear the statistics buffer
and re‐initialize this screen, use the W X arrow keys on the bottom line to navigate to the Clr:
setting. Use the ST arrow keys to select Y or N, and then either press ENTER (to wipe the
buffer), or press CLEAR (to back out of the command and return to the previous menu).
5.2.4.6.3 Monitor: Stats
Æ Compression
LanToWan WanToLan
Use the W X arrow keys to select LanToWan or WanToLan, and then press ENTER. The screen
for either selection is read‐only:
Bytes In 0.0E+00 Savings 00% 34v
Bytes Out 0.0E+00 Last 10s 00% CLR:N
Select LanToWan to view the Tx compression statistics of the modulator’s transmission path:
• Bytes In – X.XE+XX value represents the total number of bytes sent to the compressor.
o Bytes Out – X.XE+XX value equals the total number of bytes including
compression and encapsulation overhead to be sent over the satellite. Bytes
Out is the same as Bytes to WAN (see Sect. 5.2.4.6.1 Monitor: Stats → IP).
• Savings – XX% (percentage) value is calculated using the following formula:
100 * (1- (Bytes Out/Bytes In))
• Last 10s – Calculated using the exact same formula as Savings (XX%), but uses the Bytes
In and Bytes Out for the past 10 seconds so an operator can see what compression is
being accomplished on current data
Select WanToLan to view the Rx decompression statistics of the demodulator reception path:
• Bytes In – X.XE+XX value represents the total number of bytes including compression and
encapsulation overhead sent to the decompressor.
• Bytes Out – X.XE+XX value equals the total number of bytes output from the
decompressor. This represents all the traffic received by the modem.