Tektronix 071-0590-00 user manual Prbs

BERT Primer

The Tektronix PB200 provides capabilities to invert data on both transmit and receive. This provides full flexibility to adjust the PRBS signal to the user's exact requirements. Table B-1 identifies the PB200 polynomial and shift register feedback taps used to generate PRBS data.

Table B-1 - PRBS Polynomials and shift register feedback taps for PB200

N	Menu Label	PRBS			Primitive		Feedback Taps	Length in bits
		Pattern		Polynomial				(2N-1 bits)
7	PN 7	27-1	x7	+ x + 1			6 and 7	127
9	PN 9	29-1	x9	+ x4 + 1			5 and 9	511
10	PN 10	210-1	x10 + x3 + 1				7 and 10	1023
11	PN 11	211-1	x11		+ x2	+ 1	9 and 11	2047
15	PN 15	215-1	x15		+ x + 1		14 and 15	32,767
23	PN 23	223-1	x23		+ x5	+ 1	18 and 23	8,388,607
31	PN 31	231-1	x31		+ x3	+ 1	28 and 31	2,147,483,647

The Tektronix GB700/1400 provides capabilities to invert data on both transmit and receive. This provides full flexibility to adjust the PRBS signal to the user's exact requirements. Table B-2 identifies the GB700/1400 polynomial and shift register feedback taps used to generate PRBS data.

Table B-2 - PRBS Polynomials and shift register feedback taps for

GB700/GB1400

N	Menu Label	PRBS		Primitive	Feedback Taps	Length in bits
		Pattern	Polynomial			(2N-1 bits)
7	PN 7	27-1	x7 + x + 1		6 and 7	127
15	PN 15	215-1	x15	+ x + 1	14 and 15	32,767
17	PN 17	217-1	x17	+ x3 + 1	14 and 17	131,071
20	PN 20	220-1	X20 + x3 + 1		17 and 20	1,048,575
23	PN 23	223-1	x23	+ x5 + 1	18 and 23	8,388,607

B-4 GB1400 User Manual