Ameritec - AM-48E - Communications Test Set
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Equipment:
AM-48E
Date:
1992
Category:
Group:
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Information
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
2 Manuals
User manual
Manual type:
User manual
Pages:
179
Size:
4.3 MB
Language:
english
Revision:
F
Manual-ID:
18-0015
Date:
April 2004
Quality:
Electronic document, no scan, very well readable.
Upload date:
Oct. 14, 2017
MD5:
101f8fe6-ff9d-5d2b-9329-1d75e2be41af
Downloads:
931
Service manual
Manual type:
Service manual
Pages:
183
Size:
5.1 MB
Language:
italian
Revision:
Manual-ID:
Date:
Quality:
Scanned document, reading partly badly, partly not readable.
Upload date:
Oct. 22, 2020
MD5:
ffff3a9b-dc5c-59a3-ba3e-32f7addd3838
Downloads:
62