External Options; Rstu2 Installation - Toshiba Strata DK14 Installation And Maintenance Manual

DK40i/DK424 Universal Slot PCBs
RSIU, RSIS, RMDS RS-232/Modem Interface Unit

External Options

W1 Ring Generator Switch Configuration (PSTU1 and PSTU2)
On the PSTU1 or PSTU2, ensure the W1 switch is set to the "H" (190V P-P) position for
initial installation. The "L" (130V P-P) position is used if devices connected to the PSTU1 or
PSTU2 experience ring trip.
Standard Telephone Message Waiting Lamp Control
No steps required here.

RSTU2 Installation

1. Make sure the factory-installed SSTS or SSTU subunit is securely attached to the RSTU2
(Figure 7-27
WARNING! The shield on the back of the RSTU2 is designed to protect the installer
2. Insert the RSTU2 (component side facing right) into the appropriate slot, and apply firm, even
pressure to ensure proper mating of connectors. RSTU2 must be installed per tables in Chapter
2 – DK40i Configuration.
3. After installing the RSTU2, gently pull the RSTU2 outward. If the connectors are properly
mated, a light resistance is felt.
Table 7-18 RSTU2 Controls, Indicators, and Connectors
Control/Indicator/Connector
Ring voltage W1 jumper (PSTU1
(V.4) and PSTU2 only)
R48S connector P6 (RSTU or
RSTU2 only)
R48S connector P7 (RSTU or
RSTU2 only)
W1 Ring Voltage
H = 190V P-P
L = 130V P-P
(for PSTU (V.4)
and PSTU2 only)
Figure 7-27 PSTU and Subunit (SSTU)
7-54
and Figure 7-28).
from potentially hazardous ring voltage. Do NOT remove this shield.
Type of Component
3-terminal jumper
9-pin connector
6-pin connector
W1
H L
50-Pin Amphenol Connector (Female)
Sets ring generator voltage level for all circuits.
H=190V P-P, L=130V P-P.
Interface connector to P6 of R48S.
Interface connector to P7 of R48S.
Backplane Connector
1375
Description
SSTU
Subunit
Strata DK I&M 5/99