Alternate Or Additional Ground; Ksu Mounting Considerations; Prior To Installation - Toshiba Strata DK14 Installation And Maintenance Manual

6. Set the meter to the "OHMS/Rx1" scale. Place one probe on the ground terminal, and the other
probe on the terminal that produced a reading of zero volts. The reading should be less than 1
ohm.
If the reading is more than one ohm, then the outlet is not adequately grounded.
CAUTION!
If the above tests show the outlet AC voltage is not in range or is not properly
grounded, the condition should be corrected (per Article 250 of the National
Electrical Code) by a qualified electrician before the system is connected.

Alternate or Additional Ground

If the "third-wire" AC ground can not practically be improved or if extreme motor noise or other
disturbance causes system malfunction, or if local area lightning storms exist, a separate direct
ground may be warranted.
Connect a separate earth ground from a cold water pipe or earth grounding rod directly to the FG
screw terminal on the DK40i power supply (see

KSU Mounting Considerations

The Base KSU and the optional Expansion KSU are both designed to be mounted on a wall or
other vertical surface. Toshiba recommends using method 1 or 2 (see

Prior to Installation

1. Loosen the screws on the front cover and the side cover of the Base KSU, remove the covers
(see Figure 3-5).
2. Place the BATT jumper plug to the ON position.
3. Install a CO line board, either the TDDU or TCOU onto the TMAU board (see
The TCOU provides four loop start CO lines and can accommodate the Caller ID interface
unit.
The TDDU provides four DID lines.
4. Set CO line card switches.
TCOU: Set the TCOU PAD switches (SW400-SW475) to the appropriate position (see
3-21 on Page
are in close proximity to the central office the PAD position may be required.
TDDU: Set the TDDU PAD switches to the appropriate position. Also, set the high/low
voltage jumper plugs as required for proper dial pulse operation. See
35.
5. If you are not installing a TCIU2, skip to
Page 3-29), align the prongs P20, P21, and P22 over P120, P121, and P122 of the TCOU and
gently press down. Slip the plastic stand-off hook through the hole.
To prevent system malfunction, DO NOT install TCIU1 in the DK40i system.
CAUTION!
Strata DK I&M 5/99
Figure 3-6 on Page 3-11
3-32). The factory setting is NORMAL. If CO lines are connected to a PBX or
Figure 3-3).
Figure
details the interior.
Step 6. To install the TCIU2 (see
DK40i Installation
KSU Mounting Considerations
3-4).
Figure 3-7).
Figure
Figure 3-22 on Page 3-
Figure 3-20 on
3-5