Patton electronic 2160 user manual Tcpam Type, Main Rate, SNR Margin, Line Probe

Model 2160 Series User Manual 4 • Web configuration

TCPAM Type

TCPAM (Trellis Coded Pulse Amplitude Modulation) is the standard used for line coding. Select the TCPAM type from the drop-down list. Auto is the default option for TCPAM. You can also manually set the TCPAM type.

Main Rate

Select the line rate for your model from the Main Rate drop-down list. The main rate is the multiple of 64kbps, 128kbps, or 256kpbs- depending on your model type. Use Table 8 to determine the best main rate for your model.

Table 8. Main Rate Chart

Model Type	Multiple	TCPAM-16	TCPAM-32	TCPAM-128
		= 3–60	= 12–89	= 2–239
2160 2-wire model	64	192–3840	768–5696	128–15296
2161 4-wire model	128	384–7680	1536–11392	256–30592
2162 8-wire model	256	768–15360	3072–22784	512–61184

SNR Margin

Select the desired SNR Margin value from the drop-down list. SNR margin is an index of line connection quality. You can see the actual SNR margin in STATUS. You will experience better line connection quality for larger SNR margin values.

For example, if you set the SNR margin is 5, the LINE connection will drop and reconnect when the SNR margin is lower than 5. On the other hand, the device will reduce the line rate and reconnect for better line connection quality. You may select the SNR margin from the range -10 to 21.

Line Probe

For adaptive mode applications, set the Line Probe to Enable. The Model 2160 will adapt the data rate accord- ing to the line status. The screen will prompt the parameters that will be written in NVRAM. Check the parameters before writing in NVRAM.

For all other applications, set the Line Probe to Disable.

Click Restart to reboot the Model 2160 with the new settings. Click Continue to configure other options.

Advanced Configuration Options 42