Cable Installation Test - Toshiba STRATA DK14 Installation And Maintenance Manual

Cable Installation Test

If cable voltmeter and ohmmeter tests are within limits, digital telephones, DDCBs, or DDSS
consoles may not operate.
➤ To perform the cable installation test
1. Cable runs for the above digital devices must be free of cable splits (single or double). Test for
and eliminate all cable splits.
2. Cable bridge taps – Digital telephones will not operate if cable runs contain any type (short or
long) of cable bridge. Test for and eliminate all cable bridges.
3. When installing the station cable, do not run parallel to and within 3 ft. of an AC power line.
AC power lines should cross at right (90
pairs near devices that generate electrical noise, such as neon or fluorescent light fixtures.
4. For DK40i: See
or External power) for the options it supports (ADM, RPCI-DI, PDIU-DI, HHEU, DVSU,
etc.).
Table 14-3 Station Cable Continuity Check for Digital Telephone Cables using Ohmmeter
Pair
1
1
1
1
1
2
Table 14-4 Station Cable Continuity Check for Electronic Telephone Cables using Ohmmeter
Pair
1
1
1
1
1
2
3
3
3
3
3
3
3
3
1. The green-red, black-yellow and white-blue measurements should be within 10%
of each other.
2. This is the maximum allowable reading for all digital and electronic telephone
cable runs except if connecting an HDSS console to circuits 7 and 8 of a PEKU,
then the maximum cable restriction is 20 ohms, not 40 ohms.
Strata DK I&M 6/00
) angles only. In particular, avoid running station wire
°
Table 3-9 on Page 3-38. Verify that your telephone is wired correctly (2-pair
From
Wire Color Pair
1
T Green 2
R Red 2
T Green 2
R Red 2
T Green 1
T Black 2
From
Wire Color Pair
1
T Green 2
R Red 2
T Green 2
R Red 2
T Green 1
T Black 2
T White 3
T White 1
R Blue 1
T White 1
R Blue 1
T White 2
R Blue 2
T White 2
Station Cable Continuity Check
To
Voltage
Wire Color
T Black open
T Black open
R Yellow open
R Yellow open
R Red 40 ohms
R Yellow 40 ohms
To
Voltage
Wire Color
T Black open
T Black open
R Yellow open
R Yellow open
R Red 40 ohms
R Yellow 40 ohms
R Blue 40 ohms
R Red open
R Red open
T Green open
T Green open
T Black open
T Black open
R Yellow open
Fault Finding
2
2
2
2
2
14-9