Maintenance And Programming; Peripheral Hardware Descriptions - Toshiba STRATA DK24 Manual

STRATA DK
GENERAL DESCRIPTION
DECEMBER 1990
grarnming is stored in random access memory
(RAM). RAM
is protected by a lithium battery,
which has at least a six year life span.
Microprocessors: The system's main micropro-
cessor is a 16-bit 68000-type that operates at
a clock speed of 8 MHz. It is located on the
system's control board (PCTU). Local micro-
processors are located on all printed circuit
boards. The local microprocessor is an 8-bit
TMP90C840-type that operates at a clock
speed of 10 MHz.
Custom Electronic Circuitry: Use of large scale
integration (LSI) technology enables STRATA
DK circuit design to be simple and efficient.
More circuitry fits onto smaller printed circuit
boards (PCBs) and affords a compact system.
Widespread use of CMOS circuits minimize
the system's power requirements.
Power Supply: The system uses a switching-
type power supply to generate *5VDC and
-24VDC. Mechanical circuit breakers on the
front panel, which may be reset if necessary,
protect these DC voltages.(See Table B for
General Requirements).
l
The source of the power used is a stan-
dard 117VAC, 15 amp circuit. The power
supply has a built-in battery charger to
maintain customer-supplied batteries
which can be connected as a backup. This
allows full normal system operation for a
number of hours in the event of a primary
power failure. (For more detail, see Table
Q
Maiqtenance and Programming
As a result of large scale integrated circuitry,
STRATA DK
telephone systems have a minimal
number of printed circuit board types. Less time
is spent isolating board failures. This directly
translates to saving time and money.
Hardware maintenance and repair procedures
describe how to quickly and easily locate,
remove, and replace defective modules, with
minimal or no system downtime.
A remote administration -and ma'intenance
option can be added to install and maintain cus-
tomer software, and to test hardware from
remote locations.
On-site maintenance and programming is
accomplished using:
l
The 20-button LCD digital or electronic
telephone designated for programming
and maintenance, always connected to
station port 05. This telephone may be
used as a normal station when not used
for programming.
-or-
* An on-site ASCII terminal connected to an
optional maintenance port.
2 PERIPHERAL
HARDWARE DESCRIPTIONS
A wide variety of peripheral equipment is com-
patible with all three systems (see Figure 1).
Peripherals fall under four different categories:
digital telephones, electronic telephones,
Toshiba-supplied peripherals, or customer-sup-
plied peripherals. This section describes the
Toshiba-supplied equipment. When applicable,
system interface information is included.
Digital Telephonest
There are two digital telephone models avail-
able. The phones are enclosed in a stylish,
impact-resistant case with a charcoal gray matte
finish, and blend easily into any progressive
office environment.
Both digital telephone models and the digital
DSS console (see Digital Direct Station Selection
Console) have the same dimensions:
Height: 3.6 in. (92 mm)
Width: 7.3 in. (184 mm)
Length: 9.0 in. (229 mm)
In standard form, all digital telephones may be
wall mounted without additional equipment and
are hearing aid compatible.
t Requires
Release 3
software.
-3-
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