4-3
4.2 Generation Pattern Setting
LOGIC Inverts the output pattern logic.
PATTERN Selects the output pattern type.
PRBS/ZERO SUB Selects the kind of pseudorandom pattern. (If ZERO SUB is selected,
the 2
N
pattern is selected.)
Mark ratio Selects the output pattern (pseudorandom pattern) mark ratio.
Alternate Selects alternate pattern A or B.
Number of alternate loops Sets the number of A or B pattern loops.
DATA length/continuous 0 bits length Sets the DATA length. For Z.S., sets the continuous 0 bit length.
PAGE/pattern sync position
Sets the page selection (ALTN/DATA) and pattern synchronization position.
Bit setting Sets the output pattern for each 16 bits.
Bit setting (special) Sets all DATA to 0 or 1.
Bit setting (special) Sets DATA to 0 or 1 in page units.
Error addition ON/OFF Turns error addition on and off.
Error addition rate selection Selects the error addition rate.
Single error addition In the single error addition mode, one error is added each time this
key is pressed.
Tracking ON/OFF When tracking is turned on, the settings of the transmitter and re-
ceiver are changed at the same time (the one set as the master is fol-
lowed by the other).
Display switching Selects page display or pattern sync position display.
SINGLE
DISPLAY
PATTERN
LOGIC PATTERN
PRBS / ZERO SUBST
PRBS MARK RATIO
2 - 1
2
POS
NEG
ALTNDATA Z.S PRBS 7 9 11 15 20 23 31 0/8 1/8 1/4 1/2
8/8 7/8 3/4 1/2
ALTN
ERROR ADDITION(1 10 )
- N
AB ON
4 5 6 7 8 9
DATA LENGTH/ZERO SUBST LENGTH
DATA LENGTH
ZERO SUBST LENGTH
A / B LOOP TIME
PAGE/ PATTERN SYNC POSITION
BIT
1 2 3 4 5 6 7 8
9 10 11 12
13 14 15 16
ALL
PAGE
PRESET
PATTERN
LOADING
TRACKING
GUARD 0 1
0 1
4.2 Generation Pattern Setting