Toshiba Strata DK 280 Installation Manual page 502

Program *42-l
- 11 Span Primary Timing Reference Assignments
W Primary Clock Reference Tl PCB assignment
Primary Tl (1 - 6) 0
Initialized Data = 1
See notes below.
L-Enter the RDTU PCB number (1 - 6)'
that is connected to the primary reference
Tl (span line) clock source.2
Press button 01 (Blank) if the DK280 Tl
is the master (free run) clock source.3
Program *42-2
- Tl Span and Secondary Timing (Backup) Reference Assignments
W Secondary (Back-up) Reference Tl PCB assignment
Secondary Tl (1 - 6) 0
Initialized Data = 2
-Enter the RDTU PCB number (1 - 6)'
that is connected to the back-up
reference Tl (span line) clock source.2
Press button 01 (Blank) if the DK280 Tl
is the master (free run) clock source.3
Notes:
1. RDTU No. 1 is the RDTU PCB installed in the lowest slot number of all RDTlJ PCBs, RDTU
No. 2 is the RDTU PCB installed in the next highest slot number of all RDTUs and so on.
2. Example of Primary/Back-Up assignments:
Program
*42-l
Program
*42-2
Data
0 1 >
Data
q
2 >
DK280
p
Span Line
RDTU in
Tl - Primary PCB
(Primary clock source)
Off ice Central
Slot 13
Span Line
RBOC CO lines
(Secondary clock source) (
MCI
ong Distance Lines
Note:
A second RBOC Tl span line can also be used
as the secondary clock source.
3. Example of DK280 Master (free run) assignment:
DK280
Span Line
F
(DK280 clock source)
Slot 13
Tl - PCB
Other DK280
or PBX, etc
Program Data = blank button (Button 01)
for * 4 2 - 1 and * 4 2 - 2
DK0235
1 O-86
January 1996