Patton electronic 3088RC user manual Option, Jumper ConÞguration, S1-2, S1-3

•Alternate Mark Inversion (AMI): AMI coding does not inherently account for ones density. To meet this requirement, you should ensure that the data inherently meets pulse density requirements.

Switch S1-2 : CRC-4 Multiframe. CRC-4 Multiframe uses Time Slot zero to carry CRC-4 information. When CRC-4 is enabled (ON), the unit synchronizes to the CRC-4multi-frame protocol.

S1-2	Option
Off	On
Disabled	Enabled

Note When the data rate is set to 2048 Kbps, K Module transmits user data on all 32 timeslots, ignoring framing information. In this case, Switch S1-2 will be ignored.

Switch S1-3 : Clear Channel Mode. When S1-3 is at Off position, the K Module is running in G.703 clear channel mode. When S1-3 is at On position, the K Module is running in G.704 framed mode. When the K Module is set to framed mode, channel 0 will be used to pass G.704 framing information which results in a maximum bandwidth of 1984kbps for user data.

S1-3	Option
Off	On
Clear Channel Mode (G.703)	Framed Mode
	(G.704)

Switch S1-4 Through S1-8 : Reserved. Reserved for future use and should be set to OFF.

Jumper ConÞguration

The 3088RC/K model has four jumpers (two position headers): JP4, JP5, JP6, and JP7. These jumpers are used to select input and output imped- ance matching between the module and external line. See Appendix E for jumper locations.

The following is a description of the jumper settings with respect to the front panel connectors.

1.For a 75 ohm connection (coax) install JP4 - JP7 (default).

2.For a 120 ohm connection (RJ-48C) remove JP4 - JP7.

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