Instruction manual

Glossary
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Term Definition
Plus (+) Prompt
The actual prompt that indicates a ZLINK connection has been estab-
lished and the terminal is awaiting a command. The plus prompt is
similar to a DOS prompt. It allows the user over 60 commands that
provide maintenance and diagnostics of the paging terminal. When the
system operator is at the plus prompt, the <Enter> key can be pressed
to access the Model 640 databases.
POCSAG (Post Office
Code Standardization
Advisory Group)
A high-speed digital paging code format that supports tone, voice,
numeric, alphanumeric, and group paging. POCSAG offers 3 data
speeds (512, 1200, and 2400 baud) and over 2 million capcodes.
Polarity
The electrical signal “orientation”. The polarity determines whether a
high signal (usually +5 volts) is identified as a digital 0 or 1. Gener-
ally, data polarity settings allow the system to be easily customized for
interface with different manufacturers’ equipment.
Port
A pathway for information passing. Most ports have connectors for
hookup to other equipment. Examples: RS-232 serial ports - DB-9,
DB-25, etc., RJ-type telephone connectors - RJ-21, RJ-11, etc., and
Wiedmueller connectors.
Potentiometer (pot)
An analog circuit adjustment control for setting levels. Most pots look
like screws and can be set using a small flathead screwdriver.
Preamble
The first part of a pager signaling address. The preamble effectively
increases the number of available capcodes per pager type and allows
the pagers to use battery saver operation. The preamble says to the
pagers, “hey you guys with black hair, blue eyes, and 10 fingers, (or
the equivalent in paging-speak) pay attention to the following pages!”
Primary Key (PK)
The main field in a Model 640 database that uniquely identifies each
record. The primary key cannot be identical for two records. By
convention, the primary key is usually the first field in each record.
Priority Paging
Paging speed based on subscriber rank. Pages designated with higher
priority are transmitted faster than standard pages. The Model 640
offers four levels of priority: low, high, nextout, and breakthrough.
Privileges
A feature in MCU that allows the system operator to assign password
protection to individual databases in the paging terminal. MCU pro-
vides three levels of privilege assignments - standard (everyone can
view and edit the database), read-only (everyone can view, but only
users with the appropriate password can edit the database), no access
(only users with the appropriate password can view and edit the data-
base). In addition, MCU sets a fourth password to allow access to
reassigning the privilege levels themselves.