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CHAPTER 4: Operation
4.6.1 1=LOCAL UNIT, S
UBMENU OF
2=TEST
Purpose
The Local Unit selection is used to specify one of six different tests to be
performed by the local CSU/DSU MS/DBU. The selections are shown
as submenu selections 1 through 6.
Fig. 4-11. Local Unit Submenu.
DTE WITH TP
TST ERR = 00
LOOP 56K
DTE 56K SYNC
1=DTE & LOOP (LL)
2=LOOP ONLY (RT)
3=DTE ONLY
4=DTE WITH TP
1=2047 PATTERN
2=511 PATTERN
3=STRESS PTRN #1
4=STRESS PTRN #2
5=STRESS PTRN #3
6=STRESS PTRN #4
5=TEST PATTERN
1=2047 PATTERN
2=511 PATTERN
3=STRESS PTRN #1
4=STRESS PTRN #2
5=STRESS PTRN #3
6=STRESS PTRN #4
6=SELF TEST
SELF TEST
CHECKSUM XXXX
SELF TEST
PASS
1=LOCAL UNIT
LOCAL DTE & LOOP
UNIT IN TEST
LOOP IS NORMAL
TR
OFF
LOOP 56K
DTE 56K SYNC
SR
OFF
LLB
OFF
RLB
OFF
DTE TEST
UNIT IN TEST
LOOP IS NORMAL
TR
OFF
LOOP 56K
DTE 56K SYNC
SR
OFF
LLB
OFF
RLB
OFF
UNIT IN TEST
LOOP IS NORMAL
TR
OFF
LOOP 56K
DTE 56K SYNC
SR
OFF
LLB
OFF
RLB
OFF
LOCAL LOOP (RT)
UNIT IN TEST
LOOP IS NORMAL
TR
OFF
SR
OFF
LLB
OFF
RLB
OFF
TEST PATTERN
TST ERR = 00
UNIT IN TEST
LOOP IS NORMAL
TR
OFF
LOOP 56K
DTE 56K SYNC
SR
OFF
LLB
OFF
RLB
OFF
STATUS DISPLAYS
Summary of Contents for CSU/DSU MS/DBU
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