External
Time
Reference
(ETR)
The
External
Time
Reference
function
is
part
of
the
processor
in
the
zSeries
800
system.
There
is
an
ESCON
duplex
port
on
each
ETR
card
for
the
cable
connection
to
a
Sysplex
Timer.
Each
ETR
card
should
connect
to
a
different
Sysplex
Timer
in
an
Expanded
Availability
configuration.
Connectivity
Information
v
Cable
is
multimode
62.5
micron
fiber
optic
v
Cable
connector
is
ESCON
Duplex
v
See
Fiber
Optic
Links
Planning
(ESCON,
FICON,
and
Coupling
Links)
,
GA23-0367
for
information
about
link
distances
and
light
loss
budget.
ETR
Reference
The
following
illustration
shows
the
ETR
cards,
the
channel
ports
on
the
cards,
and
the
type
of
fiber
optic
connector
that
plugs
to
the
channel
ports.
Ordering
ETR
Cables
Two
ESCON
Duplex
cables
for
the
ETR
feature
on
the
zSeries
800
system
will
automatically
be
added
to
any
zSeries
Fiber
Cabling
Service
contract
offered
by
IBM
Global
Services.
Contact
your
local
IBM
Installation
Planning
Representative,
IBM
zSeries
800
Product
Specialist,
or
IBM
Connectivity
Services
Specialist
for
details.
If
you
choose
not
to
use
this
Service,
you
may
purchase
the
two
ESCON
Duplex
cables
separately,
or
provide
them
yourself
from
another
source.
ETR ESCON Duplex Connector
ETR ESCON Duplex Connector
ETR ESCON Duplex Port
ETR ESCON Duplex Port
External Time Reference
(ETR)
Cards
Figure
6-7.
ETR
Card
Level
04a,
June
21,
2004
6-14
zSeries
800:
Installation
Manual
for
Physical
Planning
|
Summary of Contents for 800
Page 2: ......
Page 8: ...Level 04a June 21 2004 vi zSeries 800 Installation Manual for Physical Planning ...
Page 10: ...Level 04a June 21 2004 viii zSeries 800 Installation Manual for Physical Planning ...
Page 12: ...Level 04a June 21 2004 x zSeries 800 Installation Manual for Physical Planning ...
Page 16: ...Level 04a June 21 2004 xiv zSeries 800 Installation Manual for Physical Planning ...
Page 22: ...Level 04a June 21 2004 1 4 zSeries 800 Installation Manual for Physical Planning ...
Page 38: ...Level 04a June 21 2004 3 6 zSeries 800 Installation Manual for Physical Planning ...
Page 52: ...Level 04a June 21 2004 4 14 zSeries 800 Installation Manual for Physical Planning ...
Page 82: ...Level 04a June 21 2004 A 2 zSeries 800 Installation Manual for Physical Planning ...
Page 84: ...Level 04a June 21 2004 B 2 zSeries 800 Installation Manual for Physical Planning ...
Page 86: ...Level 04a June 21 2004 C 2 zSeries 800 Installation Manual for Physical Planning ...
Page 90: ...Level 04a June 21 2004 D 4 zSeries 800 Installation Manual for Physical Planning ...
Page 97: ......
Page 98: ... Level 04a June 21 2004 Printed in USA 2066 IMPP 04 ...