AMERITECH AM5 User manual

MODEL AM5/AM5e
Classic
WIDEBAND
TRANSMISSION TEST SET
INSTRUCTION MANUAL

MODEL AM5/AM5e
Classic
WIDEBAND
TRANSMISSION TEST SET
INSTRUCTION MANUAL
May 1997
Technical Data Subject to
Change without Notice
760 Arrow Grand Circle
Covina, CA 91722 USA
TEL [phone]
FAX [phone]
www.ameritec.com
Test Complete
ISO 9001 Certified Company
For extra copies of
this manual, order
Part No. 18-0047G

AM5(e) Classic Instruction Manual (18-0047) Record of Revisions
November 19, 1997 iv
RECORD OF REVISIONS
00 March, 1993 Original Issue
A August, 1993 Corrections on page 3-5.
B December, 1993 Corrections on page 4-7, 10-3.
C April, 1994 Major update
D June, 1994 Added INDEX
E October, 1994 Major update
F August, 1996 Added E-mail address
G April, 1997 Calibrate Procedure Addendum
for new software version.

AM5(e) Classic Instruction Manual (18-0047) DESCRIPTION
November 19, 1997
CAUTION
When using the padded carrying case for the AM5 or AM5e Classic
(P/N 87-0070C), DO NOT PLACE the power cord around the side of the
case in the manner demonstrated in Figure 1.
Instead, be certain to WIND THE CORD UNDER THE CASING in the
Area between the feet, as shown in Figure 2.
Failure to follow this procedure could cause deterioration of the cord and
Increase the possibility of electric shock.

AM5(e) Classic Instruction Manual (18-0047) INTRODUCTION
ORGANIZATION OF MANUAL
SECTION 1 — OVERVIEW/UNPACKING describes the models of the AM5 and
AM5e Classic that are available and provides guidance for proper
unpacking and inspection of the unit.
SECTION 2 — POWER CONSIDERATIONS describes the commercial power
requirements, precautions, battery options, and power ON and
OFF.
SECTION 3 — PHYSICAL AND FUNCTIONAL DESCRIPTION describes the
physical characteristics; front-panel switches, indicators, displays,
and connectors; rear-panel power connector, voltage-select switch,
fuse location, method of identifying units, and permanent
connections. Also described in this section are the Factory-
installed options and accessories.
SECTION 4 — SELF TEST OPERATIONS describes the operations which should
be performed after the unit is turned on for the first time. Default
settings are described and SEND and MEASURE tests that can be
performed by connecting the TX/2W to the RX jacks are described.
This section also describes restoration of settings before shut down
and a full-calibration procedure.
SECTION 5 — LINE TEST CONNECTIONS AND CONFIGURATIONS describes
the cables that may be used to connect the unit to the equipment
under test. Also covered are schematic diagrams of the line
interfaces for the various configurations that can be selected by an
operator through the use of the TX/2W. RX, LINE, and DIAL
sections of the front panel.
SECTION 6 — MEASURE FUNCTIONS AND PARAMETERS describes each
measurement that may be selected by the MEASURE key on the
front panel. Included in the description are all parameters that
may be changed for each type of measurement. Some typical test
configurations are covered.
iiNovember 19, 1997

AM5(e) Classic Instruction Manual (18-0047) INTRODUCTION
SECTION 7 — FILTERS FOR AM5 Classic describes the Noise-Weighting filters
that are provided to IEEE standards.The Filters are switched by
the FILTER key into the measurement circuitry for noise tests.
Included in these sections are frequency response graphs for each
filter type.
SECTION 8 — FILTERS FOR AM5e Classic describes the Noise-Weighting
filters that are provided to CCITT standards.The Filters are
switched by the FILTER key into the measurement circuitry for
noise tests. Included in these sections are frequency response
graphs for each filter type.
SECTION 9 — SEND FUNCTIONS AND PARAMETERS describes each signal
generation function that may be selected by the SEND key on the
front panel. Included in the description are all parameters that
may be changed for each signaling requirement.
SECTION 10 — AM5/AM5e CLASSIC TECHNICAL SPECIFICATIONS provides a
tabular listing of the specifications for the AM5 Classic and the
AM5e Classic.
SECTION 11 — WARRANTY AND SERVICE POLICY provides information on
warranty and on returning unit to Ameritec for service.
iiiNovember 19, 1997

AM5(e) Classic Instruction Manual (18-0047) TABLE OF CONTENTS
TABLE OF CONTENTS
CAUTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INSIDE OF FRONT COVER
SECTION 1 — OVERVIEW AND UNPACKING . . . . . . . . . . . . . . . . . . . . . . . . . . 1 – 1
1.1 OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 – 1
1.2 UNPACKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 – 1
SECTION 2 — POWER CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 – 1
2.1 COMMERCIAL POWER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 – 1
CAUTION: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 – 1
2.2 OPTIONAL BATTERY PACK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 – 1
2.3 POWER ON AND OFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 – 1
SECTION 3 — PHYSICAL AND FUNCTIONAL DESCRIPTION . . . . . . . . . . . 3 – 1
3.1 PHYSICAL CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 – 1
3.1.1 Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 – 1
3.1.2 Portable Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 – 1
3.1.3 Rack Mounted Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 – 1
3.1.4 Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 – 1
CAUTION: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 – 1
3.1.5 Rubber Feet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 – 1
3.1.6 Carrying Handle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 – 1
NOTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 – 1
3.2 FRONT PANEL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 – 1
CAUTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 – 1
NOTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 – 1
3.3.1 ON OFF Button (power switch) . . . . . . . . . . . . . . . . . . . . . . . . 3 – 5
CAUTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 – 5
NOTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 – 5
3.3.2 TX/2W bantam jack for 2-wire circuits (2W LED on) . . . . . . 3 – 5
3.3.3 TX/2W bantam jack for 4-wire circuits (4W LED on) . . . . . . 3 – 5
3.3.4 TX/2W bantam jack for REVERSE selection
(4W REV LED on) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 – 5
3.3.5 RX bantam jack for 4-wire circuits (4W LED on) . . . . . . . . . . 3 – 5
3.3.6 RX bantam jack for 4-wire circuits for REVERSE selection
(4W REV LED on) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 – 5
3.3.7 MONITOR (TX, MEAS, RX) switch . . . . . . . . . . . . . . . . . . . . . 3 – 6
3.3.8 Speaker Volume Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 – 6
NOTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 – 6
3.3.9 DISPLAY key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 – 6
3.3.10 Left-Hand 7-Segment Display . . . . . . . . . . . . . . . . . . . . . . . . . . 3 – 6
3.3.11 Left-Hand LED’s (dB, dBm, dBrn, mSEC, HOLD TONE) . . . 3 – 6
3.3.12 Right-Hand 7-Segment Display . . . . . . . . . . . . . . . . . . . . . . . . 3 – 8
3.3.13 Units of Measurement LED’s (kHz, SEC, MIN, CNT) . . . . . . 3 – 8
3.3.14 PARAM SEL keys (Parameter Select and arrow keys) . . . . . 3 – 8
NOTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 – 8
3.3.15 START/STOP Key (Impulse Noise Measurement) . . . . . . . . 3–10
3.3.16 MEASURE Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–10
vNovember 19, 1997

AM5(e) Classic Instruction Manual (18-0047) TABLE OF CONTENTS
3.3.17 FILTER (left key) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–11
NOTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–11
3.3.18 FILTER (right key) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–11
3.3.19 SEND (left key) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–12
3.3.20 SEND (middle key) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–12
3.3.21 SEND (right key) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–12
NOTE: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–12
3.3.22 TX/2W (left key) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–13
3.3.23 TX/2W (right key) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–13
3.3.24 RX (left key) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–13
3.3.25 RX (middle key) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–13
3.3.26 RX right key) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–13
3.3.27 LINE Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–14
3.3.28 DIAL key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–14
3.3.29 DIAL Terminals: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–14
3.4 REAR PANEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–15
NOTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–15
3.4.1 AC Power Selector Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–15
CAUTION: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–15
3.4.2 Fuse Holder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–15
3.4.3 Power Plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–15
3.4.4 Identification Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–15
3.4.5 Screw Terminal, Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–16
3.4.6 Screw Terminals, T1 and R1 . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–16
3.4.7 Screw Terminals, T and R . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–16
3.5 OPTIONAL FACTORY-INSTALLED EQUIPMENT . . . . . . . . . . . . . 3–17
3.5.1 Sealed Lead-Acid Batteries and Integral Charger
(Option 24-0017) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–17
3.5.2 Siemens type “banana” input adapter for AM5e Classic
only (Option 25-0041) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–17
3.5.3 Model 30-0033XT Signalling Adapter with Ring Generator . 3–17
3.6 ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–18
3.6.1 Line Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–18
3.6.2 Protective front panel (85-0078) . . . . . . . . . . . . . . . . . . . . . . . . . 3–18
NOTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–18
3.6.3 Padded Carrying Case (87-0070) . . . . . . . . . . . . . . . . . . . . . . . . 3–18
3.6.4 19” Rack Mounting Kits (85-0076) . . . . . . . . . . . . . . . . . . . . . . 3–18
3.6.5 19” Rack Mounting Shelf (85-0233): . . . . . . . . . . . . . . . . . . . . . 3–18
SECTION 4 — SELF TEST AND CALIBRATION . . . . . . . . . . . . . . . . . . . . . . . . . 4 – 1
4.1 SELF TEST CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 – 1
4.2 POWER ON SELF-TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 – 1
NOTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 – 1
viNovember 19, 1997

AM5(e) Classic Instruction Manual (18-0047) TABLE OF CONTENTS
4.3 DEFAULT SETTINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 – 1
4.3.1 Function LEDs at Power Turn-on . . . . . . . . . . . . . . . . . . . . . . . 4 – 1
4.3.2 Parameter Settings at Power Turn-on: . . . . . . . . . . . . . . . . . . 4 – 2
NOTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 – 2
4.3.3 Restoring Previous Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 – 3
NOTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 – 3
4.5 LOOPBACK TESTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 – 4
4.5.1 Set up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 – 4
4.5.2 QUIET Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 – 4
NOTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 – 5
4.5.3 SEND 1004 Hz Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 – 6
NOTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 – 6
NOTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 – 7
4.6 CALIBRATION PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 – 7
4.6.1 External Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 – 7
4.6.2 Calibration Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 – 7
4.6.3 Calibration Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 – 8
SECTION 5 — LINE FUNCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 1
5.1 LINE CABLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 1
NOTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 1
5.2 BLOCK DIAGRAMS OF AM5 AND AM5E CLASSIC . . . . . . . . . . . 5 – 2
5.2.1 LINE 4W selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 2
5.2.2 LINE 4W REVerse selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 2
5.2.3 LINE 2W selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 3
NOTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 3
5.2.4 LINE 2W 2.16µf selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 3
5.2.5 DIAL terminal DIAL selection . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 3
5.2.6 TX/2W 135Ω, 150Ω, 600Ω, 900Ω, 1200Ωselections . . . . . . . 5 – 4
5.2.7 TX/2W OFF HOOK selection . . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 4
5.2.8 RX 135Ω, 150Ω, 600Ω, 900Ω, 1200Ωselections . . . . . . . . . . . . 5 – 4
5.2.9 RX OFF HOOK selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 4
5.2.10 RX TERM or BRDG selection . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 4
NOTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 4
5.2.11 SEND QUIET selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 5
NOTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 5
5.2.12 SEND SF SKIP selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 5
5.2.13 FILTER selections: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 5
5.2.14 FILTER 60 Hz selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 5
5.2.15 MEASURE NTG selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 6
NOTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 6
5.2.16 MONITOR (TX, MEAS, RX) Selections . . . . . . . . . . . . . . . . . . 5 – 6
5.2.17 DISPLAY (SEND, MEAS) Selections . . . . . . . . . . . . . . . . . . . . 5 – 6
5.3 LINE TERMINATION IMPEDANCES . . . . . . . . . . . . . . . . . . 5 – 7
NOTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 7
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AM5(e) Classic Instruction Manual (18-0047) TABLE OF CONTENTS
5.4 TEST CONFIGURATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 8
NOTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 8
5.4.1 End-to-End Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 8
5.4.2 Loopback Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 9
NOTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 9
5.4.3 4-Wire Testing with Responder: . . . . . . . . . . . . . . . . . . . . . . . . 5–10
5.4.4 2-Wire Testing with Responder: . . . . . . . . . . . . . . . . . . . . . . . . 5–11
SECTION 6 — MEASURE FUNCTIONS AND PARAMETERS . . . . . . . . . . . . . 6 – 1
6.1 MEASURE LEVEL AND FREQUENCY (LEVEL FREQ) . . . . . . . . . 6 – 2
NOTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 – 2
6.2 MEASURE LEVEL AND FREQUENCY,
NARROW BAND (L/F 15 kHz or L/F UNWTD) . . . . . . . . . . . . . . . 6 – 2
6.3 MEASURE IDLE LINE NOISE (NOISE) . . . . . . . . . . . . . . . . . . . . . . . 6 – 2
6.3.1 Units of Noise Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 – 3
6.3.2 Test Setup for Idle Line Noise . . . . . . . . . . . . . . . . . . . . . . . . . . 6 – 4
6.3.3 Noise Weighting Filters: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 – 4
6.4 MEASURE NOTCH NOISE (NOISE W/T) . . . . . . . . . . . . . . . . . . . . . 6 – 4
6.4.1 Validity of Notch Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 – 4
6.4.2 Test Setup for Notch Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 – 4
6.4.3 Noise Weighting Filters: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 – 5
6.5 MEASURE NOISE TO GROUND (NTG) . . . . . . . . . . . . . . . . . . . . . . 6 – 5
6.5.1 Noise to Ground Measurement Range . . . . . . . . . . . . . . . . . . . 6 – 5
6.5.2 Test Setup for NTG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 – 6
6.5.3 Noise Weighting Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 – 6
6.5.4 NTG and SEND functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 – 6
6.6 SIGNAL-TO-NOISE RATIO (S/N RATIO) . . . . . . . . . . . . . . . . . . . . . 6 – 6
6.6.1 Signal-to-Noise Ratio Measurements . . . . . . . . . . . . . . . . . . . . 6 – 7
NOTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 – 7
6.6.2 Test Setup for S/N Ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 – 8
6.6.3 Noise Weighting Filters: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 – 8
6.7 IMPULSE NOISE WITHOUT TONE (IMP NOISE) or
IMPULSE NOISE WITH TONE (IMP N W/T) . . . . . . . . . . . . . . . . 6 – 8
6.7.1 General Description of Impulse Noise Measurement . . . . . . 6 – 8
NOTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 – 8
NOTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 – 9
6.7.2 Impulse Noise Measurements, Parameters, and Procedure . 6 – 9
NOTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 – 9
6.7.3 Evaluation of Measurement Data . . . . . . . . . . . . . . . . . . . . . . . 6–12
6.7.4 Test Setup for Impulse Noise without Tone . . . . . . . . . . . . . . 6–14
6.7.5 Test Setup for Impulse Noise with Tone . . . . . . . . . . . . . . . . . 6–14
6.7.6 Noise Weighting Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–14
viiiNovember 19, 1997

AM5(e) Classic Instruction Manual (18-0047) TABLE OF CONTENTS
SECTION 7 — IEEE NOISE WEIGHTING FILTERS FOR AM5 CLASSIC . . . . 7 – 1
NOTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 – 1
7.1 NOISE WEIGHTING FILTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 – 1
7.2 60 Hz FILTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 – 8
7.3 L/F 15 kHz MEASURE FILTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 – 8
NOTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 – 8
SECTION 8 — CCITT NOISE WEIGHTING FILTERS FOR AM5e CLASSIC 8 – 1
NOTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 – 1
8.1 NOISE WEIGHTING FILTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 – 1
8.2 60 Hz FILTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 – 7
8.3 L/F UNWTD MEASURE FILTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 – 7
NOTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 – 7
SECTION 9 — SEND FUNCTIONS AND PARAMETERS . . . . . . . . . . . . . . . . . . 9 – 1
9.1 NO-SIGNAL, TERMINATED (QUIET) . . . . . . . . . . . . . . . . . . . . . . 9 – 2
CAUTION: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 – 2
9.1.1 QUIET Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 – 2
9.1.2 QUIET Parameters: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 – 2
9.2 1004 Hz TONE (1004 Hz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 – 3
9.2.1 1004 Hz Data Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 – 4
9.2.2 1004 Hz Parameter Display/Adjustment . . . . . . . . . . . . . . . . 9 – 4
9.3 VARIABLE FREQUENCY GENERATOR (VAR Hz) . . . . . . . . . . 9 – 4
9.3.1 VAR Hz Data Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 – 4
9.3.2 VAR Hz Parameter Display/Adjustment . . . . . . . . . . . . . . . . 9 – 4
NOTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 – 4
9.4 SWEEP GENERATOR (SWEEP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 – 6
9.4.1 SWEEP Data Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 – 6
9.4.2 SWEEP Parameter Display/Adjustment . . . . . . . . . . . . . . . . . 9 – 6
NOTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 – 6
9.5 SIGNALLING FREQUENCY SKIP (SF SKIP) . . . . . . . . . . . . . . . . . . 9 – 8
9.5.1 SF SKIP Rejection for AM5 Classic . . . . . . . . . . . . . . . . . . . . . . 9 – 8
9.5.2 SF SKIP Rejection for AM5e Classic . . . . . . . . . . . . . . . . . . . . . 9 – 8
9.6 SINGLE FREQUENCY TONES: (F1, F2, F3, F4) . . . . . . . . . . . . . . . . . 9 – 8
9.6.1 General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 – 8
9.6.2 Loop Back Tone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 – 9
9.7 OPEN CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 – 9
SECTION 10 — AM5 and AM5E CLASSIC SPECIFICATIONS . . . . . . . . . . . . 10 – 1
SECTION 11 — WARRANTY, CALIBRATION, AND SERVICE . . . . . . . . . . 11 – 1
11.1 WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 – 1
11.2 SERVICE POLICY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 – 1
11.3 CALIBRATION POLICY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 – 1
11.4 RETURN OF UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 – 2
SECTION A1 — APPENDIX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1 – 1
A.1.1 SCOPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1 – 1
A.1.2 EQUIPMENT REQUIRED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1 – 1
ixNovember 19, 1997

AM5(e) Classic Instruction Manual (18-0047) TABLE OF CONTENTS
A.1.3 CALIBRATION PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1 – 1
A.1.4 VALIDATION PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1 – 3
INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I – 1
xNovember 19, 1997

AM5(e) Classic Instruction Manual (18-0047) TABLE OF CONTENTS
LIST OF ILLUSTRATIONS
Figure 1 — Wrong (way to wind power cable) . . . . . . INSIDE OF FRONT COVER
Figure 2 — Correct (way to wind power cable) . . . . . INSIDE OF FRONT COVER
Figure 3-1 — AM5 Classic Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 – 2
Figure 3-2 — AM5e Classic Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 – 2
Figure 3-3 — Level (dB/dBm) and Noise (dBrn ) Units of Measurement . . . . . . . 3 – 7
Figure 3-4 — AM5(e) Classic Rear Panel Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–16
Figure 5-1 — Line Cable Accessories for AM5(e) Classic . . . . . . . . . . . . . . . . . . . . . 5 – 1
Figure 5–2 — 4-Wire Line Circuit Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 2
Figure 5–3 — 2–Wire Line Circuit Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 3
Figure 5-4 — 4-Wire End-to-End Testing Configuration . . . . . . . . . . . . . . . . . . . . . 5 – 8
Figure 5-5 – 4-Wire Testing with Responder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–11
Figure 5-6 — 2-Wire Testing with Responders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–11
Figure 6–1 — Impulse Noise Measurement Selection/Displays . . . . . . . . . . . . . . . 6–10
Figure 6–2 — Impulse Noise Parameters Selection/Display . . . . . . . . . . . . . . . . . . 6–11
Figure 6–3 — Illustration of Impulse Noise Measurement . . . . . . . . . . . . . . . . . . . . 6–13
Figure 7-1 — CMSG Bandwidth Filter (CMSG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 – 2
Figure 7–2 — Program Bandpass Filter (PGM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 – 3
Figure 7–3 — 3 kHz Low Pass Filter (3 kHz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 – 4
Figure 7–4 — 15 kHz Low Pass Filter (15 kHz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 – 5
Figure 7–5 — 50 Kilobit Filter (50 kBit) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 – 6
Figure 7–6 — Wideband 120 kHz Filter (WIDE —AM5-120 Model . . . . . . . . . . . . 7 – 7
Figure 7–7 — Wideband 160 kHz Filter (WIDE — AM5-200 Model) . . . . . . . . . . . 7 – 7
Figure 8-1 — Psophometric Filter (PSHO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 – 2
Figure 8–2 — Sound Unweighted Filter (UNWTD Q-PEAK/UNWTD RMS) . . . . 8 – 3
Figure 8–3 — Sound Weighted Filter (SWTD Q-PEAK/SWTD RMS) . . . . . . . . . . 8 – 4
Figure 8-4 — 2 kHz Flat Filter (2 kHz FLAT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 – 5
Figure 8–5 — Wideband 120 kHz Filter (WIDE —AM5e-120 Model) . . . . . . . . . . . 8 – 6
Figure 8–6 — Wideband 160 kHz Filter (WIDE — AM5e-200 Model) . . . . . . . . . . 8 – 6
Figure 9–1 — Send QUIET Data Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 – 2
Figure 9–2 — Send QUIET Parameter Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 – 3
Figure 9–3 — Send 1004 Hz Data and Parameter Displays . . . . . . . . . . . . . . . . . . . 9 – 5
Figure 9–4 — Send VARiable Hz Data and Parameter Displays . . . . . . . . . . . . . . . 9 – 5
Figure 9–5 — Send SWEEP Data and Parameter Display . . . . . . . . . . . . . . . . . . . . . 9 – 7
xiNovember 19, 1997

AM5(e) Classic Instruction Manual (18-0047) OVERVIEW/UNPACKING
1. OVERVIEW AND UNPACKING
1.1 OVERVIEW
This Instruction Manual describes the operation of the Ameritec Model AM5 Classic
and AM5e Classic Voice/Data Transmission Test Sets.
The AM5 Classic and AM5e Classic are microprocessor-based test instruments used to
make Transmission Impairment Measurements (“TIMS”) on 2- and 4-wire circuits.
Models are available for IEEE Standards and CCITT Recommendations as follows:
AM5 CLASSIC-120 - - - IEEE Standard 743-1984 (Bell Standard 41009)
AM5 CLASSIC-200 - - - Same as AM5 Classic-120 with extended range to 200 kHz
AM5e CLASSIC-120 - - - CCITT International Recommendations
AM5e CLASSIC-200 - - - Same as AM5e Classic-120 with extended range to 200 kHz
Both the AM5 Classic and AM5e Classic are hereafter referred to as “AM5(e) Classic”,
and except where specified “AM5” or “AM5e” all information applies to both types of
Classics.
The AM5(e) Classic also contains a separate full-function test tone generator which
produces operator-selected and automatically-stepped (sweep) tones from 20 Hz to 120
kHz (or 200 kHz) required for tests.
The AM5(e) Classic provides five (5) impedance selections for RX and TX lines,
separate DC hold circuits, and a built-in speaker monitor.
Optional features include a Signaling Adapter with Ring Generator, “Siemens”-type
Line Test Connections, Rechargeable batteries for cordless portable operation, a snap-
on cover, and a rack-mounting kit for permanent installations.
The 200 kHz Model of both the AM5 Classic and AM5e Classic extends the maximum
frequency response measurement and generation from 120 kHz to 200 kHz.
1.2 UNPACKING
The AM5(e) Classic was thoroughly tested and carefully packed before shipment, and
was in good condition when given to the carrier for shipment.
Upon receipt, thoroughly inspect the outside of the shipping container for damage. If
damage is noted, immediately contact the carrier. The name of the carrier will be noted
on the packing slip which is attached to the outside of the shipping container.
Open the container carefully and compare the contents with the packing slip. Note any
damage or shortages. Notify the carrier in the event of damage. Notify Ameritec in the
event of shortages.
Save the shipping container for future use in case the AM5(e) Classic must be returned
to the factory.
November 19, 1997 Page 1-2

AM5(e) Classic Instruction Manual (18-0047) POWER CONSIDERATIONS
2. POWER CONSIDERATIONS
2.1 COMMERCIAL POWER
CAUTION: Before connecting the AM5(e) Classic to AC Power , be sure
that the AC power selector switch is in the correct position. For more
details refer to Section 3, sub-sections 3.3.1. and 3.4.1.
All models of the AM5(e) Classic are powered from commercial 115 V AC or 230 V AC
50/60 Hz power, and have a power consumption of 26 Watts (VA). A rear-panel
selector switch selects 115 V AC or 230 V AC.
A detachable 3-wire power cord is furnished which mates with a CCE standard V-type
connector on the rear panel. The other end of the power cord has a standard three-
conductor AC plug. A replaceable 1/2 Ampere fuse is also accessible on the rear panel.
2.2 OPTIONAL BATTERY PACK
The AM5(e) Classic may be equipped with an internal battery pack to allow for full
cordless (no commercial power) operation.
The battery pack consists of two sealed lead-acid batteries and associated charging
circuitry. When fully charged, the batteries will power the AM5(e) Classic for about
five to eight (5-8) hours.
A low battery is indicated by blinking decimal points on the front panel display.
Blinking decimal points indicate about one-half hour of remaining battery power
before recharging is required.
The AM5(e) Classic may be operated while the batteries are recharging. Recharging
occurs continuously whenever the AM5(e) Classic is plugged into AC power whether
the power switch is turned ON or OFF. However, charging will be accomplished faster
when the power switch is turned OFF. Commercial power interruption will not cause
unit to stop operating as long as the batteries remain charged.
2.3 POWER ON AND OFF
The power ON-OFF switch is located on the upper right side of the front panel (refer to
Section 3 for illustration). It is an alternate-action push button. When pushed-in, it will
lock in that position and the power is ON. Push it again, the button will pop out, and
the power is OFF. When the power is turned ON, the AM5(e) Classic will go through a
self-test procedure, then will show factory-set test selections referred to as “defaults”.
The operator usually will change these settings for a particular test configuration.
The AM5(e) Classic is equipped with a non-volatile memory for test setups. Although
loss of power will cause operation to cease, current test parameter settings will be
stored in memory. When the AM5(e) Classic is turned back ON, these settings can be
re-established instead of the defaults. A procedure for restoring these settings when
power is turned ON is described in Section 4 of this Manual.
November 19, 1997 Page 2-1

AM5(e) Classic Instruction Manual (18-0047) DESCRIPTION
November 19, 1997 Page 3-1
3. PHYSICAL AND FUNCTIONAL DESCRIPTION
This section describes the general physical characteristics of the AM5(e) Classic, the
Front and Rear Panel controls, indicators, and connectors, and the optional equipment.
3.1 PHYSICAL CHARACTERISTICS
3.1.1 Weight: The AM5(e) Classic weighs six (6) pounds (2.7 kilograms) without the
optional battery pack, and 10 pounds (4.5 kilograms) with the battery pack.
3.1.2 Portable Dimensions: The AM5(e) Classic in its portable case measures 8.3 in.
(210 mm) wide, 3.5 in. (89 mm) high, and 12.1 in. (307 mm) deep. With the
optional snap-on cover in place, the Classic is 14 in. (356 mm) deep.
3.1.3 Rack Mounted Dimensions: A 19 in. Rack Mount kit (P/N 850076) can be
ordered for fixed installations. When mounted in the Rack Mount kit, the
AM5(e) Classic measures 19 in (483 mm) wide, 3.5 in. (89 mm) high, and 12.1 in.
(307 mm) deep. A Rack Mount kit shelf is also available (P/N 850233). For more
detail refer to sub-section 3.6.5.
3.1.4 Construction: The front panel (with switch and indicators labels appropriate for
the AM5 Classic or AM5e Classic ) and a black, steel rear panel are attached to a
sturdy aluminum case. Within the case, electronic components are mounted on
three plug-in printed circuit boards, interconnected with ribbon cables. The AC
power supply and optional battery pack with charging circuitry are also
contained within the case.
CAUTION: None of the electronic components within the case are user-
serviceable, and opening the case will void the manufacturer’s warranty.
3.1.5 Rubber Feet: There are four (4) rubber feet on the bottom of the case, and two
rear-panel support brackets for positioning the AM5(e) Classic horizontally or
vertically during operation. There are also four (4) rubber feet on the left side for
setting it down after carrying it with the carrying handle.
3.1.6 Carrying Handle: The carrying handle is made of thick, soft, flexible
plastic. It is located on the right side of the case. It extends for use and retracts
against the case when not in use.
NOTE: Neither the rubber feet nor the carrying handle are provided when the AM5(e)
Classic is installed in the 19 inch Rack Mount kit (P/N 850076).
3.2 FRONT PANEL DESCRIPTION
The front panel measures approximately 3 in. (75 mm) high by 8 in. (205 mm) wide.
Both panels are illustrated in Figures 3-1 and 3-2. The panels are similar in appearance
with the exception of the label nomenclature for filters, certain noise measurements,
and DIAL terminal identification.

AM5(e) Classic Instruction Manual (18-0047) DESCRIPTION
November 19, 1997 Page 3-2
Figure 3-1 — AM5 Classic Front Panel (Sheet 1 of 2)
Figure 3-2 — AM5e Classic Front Panel (Sheet 1 of 2)

AM5(e) Classic Instruction Manual (18-0047) DESCRIPTION
November 19, 1997 Page 3-3
Figure 3-1 — AM5 Classic Front Panel (Sheet 2 of 2)
Figure 3-2 — AM5e Classic Front Panel (Sheet 2 of 2)

AM5(e) Classic Instruction Manual (18-0047) DESCRIPTION
November 19, 1997 Page 3-4
For the AM5(e) Classic models that have extended frequency response, the following
designation plate appears on the lower-left side of the panel:
200 kHz
The front panel contains push-button switches, LED indicators, and LED displays for
setting test conditions and displaying measurements. A speaker volume control knob
is also located on the front panel. Bantam jacks are provided for line connections
(duplicated on the rear panel as terminals) and two terminals are provided for a user’s
“Butt Set” to allow dialing and talking by the user.
All push button keys are non-membrane type, and offer good visual, tactile, and
audible feedback. All indicators, including the display, are LEDs and should never
need replacement.
The remaining sub-sections in Section 3 describe the controls, indicators, and displays
on the front panel. The numbering of the sub-sections corresponds with the
identifications of sub-sections shown on Figures 3-1 and 3-2.
Further descriptions are contained in the other Sections of this manual which describe :
• Self Test Operations Section 4
• Line Test Connections and Configurations Section 5
• Measure Functions and Parameters Section 6
• Filters for AM5 Classic Section 7
• Filters for AM5e Classic Section 8
• Send Functions and Parameters Section 9

AM5(e) Classic Instruction Manual (18-0047) DESCRIPTION
November 19, 1997 Page 3-5
3.3.1 ON OFF Button (power switch):
CAUTION: Before connecting the AM5(e) Classic to AC Power , be sure
that the selector switch is in the correct position. For more details refer
to 3.4.1.
Push the button IN to turn power ON. Push the button again and the button
will pop out to turn power OFF. The front panel illustrates the power positions
as shown below:
Button in Power ON
Button out Power OFF
When the power is turned ON, The Red LED indicators will come on to show
the default conditions. The two display windows also may show red characters.
For more information on default settings, refer to Section 4.
NOTE: The functions selected for the TX/2W jack described in the next three
sub-sections are duplicated by the T and R terminals on the rear panel.
3.3.2 TX/2W bantam jack for 2-wire circuits (2W LED on): The Classic both transmits
and receives signals over this jack through a built-in hybrid circuit. Connect a 2-
wire circuit to this jack.
3.3.3 TX/2W bantam jack for 4-wire circuits (4W LED on): The Classic transmits
signals over this jack. Connect the send (transmit, or TX) pair of a four-wire
circuit to this jack.
3.3.4 TX/2W bantam jack for REVERSE selection (4W REV LED on): This jack
becomes a receive (RX) jack as shown on the panel. The Classic receives signals
over this jack (as described in 3.3.5). Connections are per test requirements.
NOTE: The functions selected for the RX jack described in the next two sub-sections
are duplicated by the T1 and R1 terminals on the rear panel.
3.3.5 RX bantam jack for 4-wire circuits (4W LED on): The Classic receives signals
over this jack. Connect the receive (or RX) pair of a four-wire circuit to this jack.
3.3.6 RX bantam jack for 4-wire circuits for REVERSE selection (4W REV LED on):
The jack becomes a transmit (TX) jack as shown on the panel. The Classic
transmits signals over this jack (as described in 3.3.3). Connections are per test
requirements.