3M Dynatel 965AMS User manual

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3M™ Dynatel™ Advanced Modular System 965AMS Measurement Functions
POTS
Tests available with the POTS key include Loss, Noise,
Longitudinal Balance, Load Coil Counter, Caller ID, Ringers,
and Level Trace.
POTS>Loss
Use Loss to measure the loss from the far-end of a circuit to the
near-end using a precision tone between 200 Hz and 20kHz.
Note: You must use a device at the far end to generate the tone.
This could be the milliwatt number in the central office or an
965AMS set to the tone mode.
POTS>Loss>Hook-Up
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Measurement Functions 3M™ Dynatel™ Advanced Modular System 965AMS
POTS>Loss>Operation
1. Press the blue key to
enter POTS menu. Use the
up and down arrow keys to
select Loss.
2. Press OK to start the test.
3. Dial a milliwatt number.
There are 2 ways to enter
the milliwatt numbers:
1.
Use the blue keys to
enter the number just
like you were dialing a
standard telephone.
Press Dial when you
have entered all of the
digits.
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3M™ Dynatel™ Advanced Modular System 965AMS Measurement Functions
POTS>Loss>Operation
2.
Or, use the memory
mode. The 965AMS
can store up to 10
numbers in the quiet
line memory list.
Press Setup to select
or edit numbers from
memory.
a. Use the up and down
arrow keys to find the
quiet line number for
the central office you
want to measure.
b. Use Edit Number to
add new numbers
or to edit existing
numbers using the
blue keys.
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Measurement Functions 3M™ Dynatel™ Advanced Modular System 965AMS
POTS>Loss>Operation
c. Press Select to
move to the DTMF
or Pulse dialing
section. Use the Up
and Down arrow
keys to select a
dialing method.
DTMF pulsing is
the default value.
d. Press Select to
move to the loop
start-ground start
section. Use the
Up and Down
arrow keys to select
a method. The
default is loop start.
Press OK to return
to the main Dial
Noise screen.
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3M™ Dynatel™ Advanced Modular System 965AMS Measurement Functions
POTS>Loss>Operation
e. Press Dial to begin
the test.
4. Point to Point
Measurements
1. Use a 965AMS tester
or a 965DSP tester set
to the tone mode.
2. Verify that both ends
of the circuit are on the
same frequency.
3. Press Send Tone at the
sending end.
4. Press Measure at the
receiving end.
5. Results screen:
POTS Loss Measurement Normal Range
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Measurement Functions 3M™ Dynatel™ Advanced Modular System 965AMS
Parameter OK Marginal Not OK
Balance > 60 p 50-60 < 50 dBm
Loss > 8.5 — < 8.5 dBm
Noise < 80 20-30 < 30 dBmC
POTS>Noise
Use Noise to measure the Noise, Power Influence, and the
calculated Balance of a pair.
POTS>Noise>Hook-Up
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POTS>Noise>Operation
1. Press the blue key to
enter POTS menu. Use the
up and down arrow keys to
select Noise.
2. Press OK to start the test.
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3M™ Dynatel™ Advanced Modular System 965AMS Measurement Functions
POTS>Noise>Operation
3. Enter the quiet line number
for the central office you
are calling.
There are 2 ways to enter
the quiet line numbers:
1.
Use the blue keys to
enter the number just
like you were dialing a
standard telephone.
If you have a
combination milliwatt
and quiet line, enter
the number 3 as the
telephone number. This
will provide the proper
termination for the
noise measurement.
Press Dial when you
have entered all of the
digits.
2. Or, use the memory
mode. Up to 10
numbers can be
stored in the quiet line
memory list.
Press Setup to select
or edit numbers from
memory.
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Measurement Functions 3M™ Dynatel™ Advanced Modular System 965AMS
POTS>Noise>Operation
a. Use the up and down
arrow keys to find the
quiet line number for
the central office you
want to measure.
b. Use Edit Number to
add new numbers
or to edit existing
numbers using the
blue keys.
c. Press Select to
move to the DTMF
or Pulse dialing
section. Use the Up
and Down arrow
keys to select a
dialing method.
DTMF pulsing is
the default value.
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3M™ Dynatel™ Advanced Modular System 965AMS Measurement Functions
POTS>Noise>Operation
d. Press Select to
move to the loop
start-ground start
section. Use the
Up and Down
arrow keys to select
a method. The
default is loop start.
Press OK to return
to the main Dial
Noise screen.
e. Press Dial to begin
the test.
4. Results screen:
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Measurement Functions 3M™ Dynatel™ Advanced Modular System 965AMS
POTS Noise Normal Range
Parameter OK Marginal Not OK
Balance > 60 50–60 < 50dBm
Loss > 8.5 — < 8.5dBm
Noise < 80 20–30 < 30dBmC
POTS>Longitudinal Balance
Use Longitudinal Balance to measure the active Longitudinal
Balance on the pair. This test measures the ability of the Tip and
Ring to reject noise and crosstalk.
POTS>Longitudinal Balance>Hook-Up
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3M™ Dynatel™ Advanced Modular System 965AMS Measurement Functions
POTS>Longitudinal Balance>Operation
1. Press the blue key to
enter the POTS menu. Use
the up and down arrow
keys to select Longitudinal
Balance.
2. Press OK to start the
measurement.
3. The results are displayed on
the screen.
POTS Longitudinal Balance Normal Range
Parameter OK Marginal Not OK
Balance > 60 50–60 < 50dBm
Loss > 8.5 — < 8.5dBm
Noise < 80 20–30 < 30dBmC
POTS>Load Coils
The Load Coils function counts up to five load coils on the
pair and determines the distance to the first one. The distance
measurement requires that you specify the wire gauge of the
pair.
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Measurement Functions 3M™ Dynatel™ Advanced Modular System 965AMS
POTS>Load Coils>Hook-Up
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POTS>Load Coils>Operation
1. Press the blue key to
enter POTS menu. Use the
up and down arrow keys
select Load Coils.
2. Press OK to see the Load
Coil screen.
3. Press Setup to see the
Load Setup Screen.
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3M™ Dynatel™ Advanced Modular System 965AMS Measurement Functions
POTS>Load Coils>Operation
4. Use the up and down arrow
keys to select the correct
wire gauge.
Press OK to return to
Load Coil screen.
5. Press Test to start the test.
6. The results show 3 load
coils and the first load coil
is at a distance of 6,032
feet.
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Measurement Functions 3M™ Dynatel™ Advanced Modular System 965AMS
POTS>Load Coils>Operation
7. It is not necessary to have any particular length of cable
before the first load coil, but you must have at least 3,000
feet of cable after each load coil for the Load Coil function
to count properly.
POTS>Caller ID
Caller ID detects the Caller ID signal sent on the pair and
displays date, time, the calling number, the calling party name,
the signal level, and the message status.
POTS>Caller ID>Hook-Up
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3M™ Dynatel™ Advanced Modular System 965AMS Measurement Functions
POTS>Caller ID>Operation
1. Press the blue key to
enter the POTS menu. Use
the up and down arrow keys
to select Caller ID.
2. Press OK to start the test.
3. The results of the test will
be displayed on this screen.
Certain result boxes may be blank if the information is not
available.
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Measurement Functions 3M™ Dynatel™ Advanced Modular System 965AMS
POTS>Ringers
The Ringers function measures the capacitance associated with
one or more ringer circuits on the line. One old style mechanical
ringer has a capacitance of 0.47 µF. Newer phones have
electronic ringers that have much lower capacitance than 0.47 µF
POTS>Ringers>Hook-Up
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POTS>Ringers>Operation
1. Press the blue key to
enter the POTS menu. Use
the up and down arrow keys
to select Ringers.
2. Press OK to start the
measurement.
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3M™ Dynatel™ Advanced Modular System 965AMS Measurement Functions
POTS>Ringers>Operation
3. During the measurement an
hour glass will be visible at
the bottom of the display.
When the measurement
is complete, the Ring-
Ground, Tip-Ring and Tip-
Ground capacitance will be
displayed.
To display the equivalent
ringer count, press
Display Capacitance .
4. Press Display Ringers to
return to the previous view.
POTS>Level Trace
Use Level Trace to measure and display the AC impedance of
an inactive pair as a function of frequency. This test can be used
to analyze a pair for loading and bridge tap problems. This is
NOT a continuous test.
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Measurement Functions 3M™ Dynatel™ Advanced Modular System 965AMS
POTS>Level Trace>Hook-Up:
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POTS>Level Trace>Operation
1. Press the blue key to
enter POTS menu. Use the
up and down arrow keys to
select Level Trace.
Press OK to start the test.
2. The result is displayed
on a graph with relative
impedance level displayed
on the y-axis (in dB) and
the frequency on the x-axis.
This trace shows a 12,000
foot line with no load coils.
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3M™ Dynatel™ Advanced Modular System 965AMS Measurement Functions
POTS>Level Trace>Operation
3. A dip in the graph indicates
the presence of a load coil.
This graph shows one load
coil.
Note: Level trace cannot
calculate the distance to the
load coil.
4. Use the left and right soft
keys to move the cursor
across the graph. As the
cursor is moved, a readout
of the signal level and
frequency will be displayed
beneath the graph. This
graph shows a circuit with
two load coils.
5. This trace shows one load
coil at 18,000 feet.
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Measurement Functions 3M™ Dynatel™ Advanced Modular System 965AMS
Auto Test
Use Auto Test to automatically perform the following
tests: Active POTS, Vacant POTS, Vacant WideBand and Smart
Auto Test.
Auto Test>Active POTS
Use Active POTS to perform an automatic sequence of tests on
Active POTS lines. The tests include: DC Voltage, AC Voltage,
Loop Current, Ground Resistance, Single Tone Loss, Voiceband
Noise (metallic), Voiceband Power Influence and Longitudinal
Balance.
Auto Test>Active POTS>Hook-Up
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