Ameritec AM-48 Communications Test Set
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Model:
AM-48
Data:
1992
Kategoria:
Grupa:
Opis:
Personal Transmission Test Set
Informacja
Definition and Purpose. In one (1) hand-held unit, the AM-48
provides the field engineer with two (2) instruments:
1.
a transmission Test Set, and
2.
a telephone "butt-set".
The transmission Test Set tests the integrity and quality of
2-wire or
4-wire voice and data transmission lines by sending selected
analog
signals and measuring standard parameters of the received
signals.
The telephone "butt set" enables the field engineer to dial
up and
speak back-and-forth with a field engineer at the far end of the
system. The compact and light-weight AM-48 eliminates the
need to
carry multiple, bulky test sets.
Functional Overview
AM-48 can send:
•
any frequency from 200 Hz to 20 kHz @ -50 to +10 dBm
•
continuous 3-tone slope (404, 1004, 2804 Hz)
•
continuous, user-defined, sweep tones
•
fixed 1004 Hz
•
P/AR waveform
•
momentary 2713 Hz for WECO 829 loopback
AM-48 can measure:
•
level, -65 to +10.9 dBm (absolute or relative)
•
frequency, 0 to 19,999 Hz
•
idle channel noise
•
noise with tone
•
three-level impulse noise
•
phase jitter
•
gain jitter
•
transients (dropouts, phase and gain hits, impulse noise)
•
signal-to-noise (S/N) ratio
•
peak-to-average ratio (P/AR)
Noise filters provided (each with optional 1010 Hz notch)::
•
C-Message (Psophometric for(AM-48E)
•
3 kHz
•
15 kHz
•
Program (Sound-weighted for(AM-48E)
Other features:
•
High impedance bridge, 600 or 900 Ohm termination
•
Display prompts help in set-up and testing sequences
•
On-board memory can store & recall up to 10 user-defined
test set-ups
•
Dials: pulse, DTMF, and MF
•
Talk/Listen capability
•
Printer Interface for hard copy of set-up and test results
•
Battery life: Alkaline, 6 to 7 hours; NiCad, 3 to 4 hours
•
NiCad batteries can be recharged without removing them
from the unit
Testing Configurations: (For details, see ¶6.6)
There are three (3) basic AM-48 configurations used to test
2-wire/4-wire telephone/data communication lines:
1.
End-to-end -- requiring two (2) AM-48 units
2.
Loopback
3.
Testing with responders
Typ ręczny:
Instrukcja obsługi
Strony:
179
Rozmiar:
4.32 Mbytes (4526082 Bytes)
Język:
english
Rewizja:
F
Ręczny ID:
18-0015
Data:
2004 04 19
Jakość:
Dokument elektroniczny, bez skanowania, bardzo dobrze czytelne.
Data przesłania:
2017 10 14
MD5:
101f8fe6ff9d5d2b93291d75e2be41af
Pobrane:
1253
Informacja
This instruction manual describes Ameritec Corporation’s AM-48
and AM-48E Personal Transmission Test Sets.
Note:
Throughout this manual, all references to the "AM-48" also
apply to the "AM-48E", unless otherwise noted. See ¶1.4
for a summary of the differences between the AM-48 and
the AM-48E,
The other paragraphs in this Introduction section are:
1.2
General Description
1.3
AM-48 Technical Specifications
1.4
AM-48E Technical Specifications
The balance of the manual is divided into the following
sections:
2.
Receiving and Unpacking
3.
Physical and Functional Description
4.
Power Considerations
5.
Self-Test Instructions
6.
Connection and Configuration
7.
Operating Instructions
8.
Explanation and Application of Measurements
9.
Circuit Diagrams
10.
Warranty, Service, and Calibration
11.
Glossary
Index
Glossary. Refer to the Glossary to become familiar with the
terminology used in this manual.
Power. Be sure to read Section 4 and observe the WARNING in ¶4.3
before powering up the AM-48,
Self Test . Perform the Self Test in Section 5 to:
1.
confirm that all AM-48 circuits and basic functions are
working properly, and
2.
obtain "hands-on" experience with the AM-48 to learn how
the controls operate.
Transmission Measurements . Note that Section 7, Operating
Instructions, gives procedures to perform transmission
measurements.
For explanation and application of the measurements, see
Section 8.