Toshiba Strata DK 280 Installation Manual page 652
Digital business telephone system
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Also See for Strata DK 280:
- User manual (79 pages) ,
- Quick reference manual (4 pages) ,
- System administration manual (60 pages)
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Table 12-1
(Electronic Telephone Cables)
Station Cable Continuity
Check Using Voltmeter
Table 12-2
Table 12-2
(Electronic Telephone (
Station Cable Continui!
(Electronic Telephone Cables)
Station Cable Continuity
Check Using Voltmeter
Notes:
1.
This is the maximum
allowable
reading
for all digital and electronic
telephone
cable runs except if
connecting
an HDss console
to Circuits seven and eight of a PEKU-then
the maximum
cable
restriction is 20 ohms, not 40 ohms.
2.
Nominal
voltage-within
the limits of k26.3 - 227.8
VDC while under AC power, polarity depending
on voltmeter lead placements.
General Note:
.
The green-red,
black-yellow,
and white-blue
measurements
should be within, 10 percent
of each
other.
Table 12-3
Table 12-4
(Digital Telephone Cables)
Station Cable Continuity
Check Using Voltmeter
(Digital Telephone,
Attendant
Console, DDSS, or
DDCB Cables)
FROM
TO
Pair 1 Wire 1 Color
Pair 1 Wire 1 Color
VOLTAGE
Cable Continuity
Check Using Ohmmeter
I
FROM
I
TO
I
I
Pair I Wire I Color I Pair I Wire I Color
Resistance
i
1
T
Green
2
T
Black
open
1
PI
Red
2
T
Black
open
1 1 1 T
/Green1
2 1 R
IYellow
open
I
1
1
2
R
Red
2
R
Yellow
open
T
Green
1
R
Red
40
ohms'
T
Black
2
R
Yellow
40
ohms'
DK0494
12-6
January
1996
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