3M Dynatel 945DSP User manual
78813034408-B Manual Instruction, 945DSP
Print this document 74% full size to fit in 945DSP carrying bag!
Overall size of document, with binding must not exceed 170mm high x 100mm wide.
Revision History
Rev 6 Released to art department
12/1/2000 Removed prior version screen image from page 13 and 17
12/12/2000 Page 5 – added reference to speaker disabled on low power
Released to Art Department
12/20/2000 Changed dbrn0P noise limits
Increased font size to 12pn
Rev 8 Resent to art department
Changed screen label graphics to permit pdf printing
Changed warning re effects of leakage current on opens P11
Added statement that escape key cancels P21
Changed shutdown beeps from 10 to 6 on P5
Rev B Version 2.15 Changes
2004/03/08 Removed Ohms to Distance, restored Soak
Dynatel 945DSP
Subscriber Loop Tester
Instruction Manual
March 8, 2004
78-8130-3440-8 Rev. B
FCC DECLARATION OF CONFORMITY
This device complies with Part 15 of the FCC
Rules. Operation is subject to the following two
conditions: (1) this device may not cause harmful
interference and (2) this device must accept any
interference received, including interference that
may cause undesired operation.
CE DECLARATION OF CONFORMITY
The EU Directives covered by this Declaration
CISPR 22:1998/EN 55022:1998 Radio Disturbance Characteristics for IT
Equipment
EN 300 386 V1.2.1 ( 1998-11) – EMC for Telecommunications Equipment
The Products Covered by this Declaration
3M Dynatel
¥
945DSP Subscriber Loop Tester
The Basis on which Conformity is being Declared
The product identified above complies with the requirements of the above EU
Directives by meeting the following standards:
EN 6100-4-2 Electrostatic Discharge
EN 6100-4-3 Radiated RF Compatibilitity
The CE mark was first applied in: January 2001
The products described above comply with the essential requirements of the
directives specified.
ATTENTION!
The attention of the specifier, purchaser, installer, or user is drawn to
special measures and limitations to use which must be observed when the
product is taken into service to maintain compliance with the above
directives. Details of these special measures and limitations to use are
available on request, and are also contained in the product manuals
Table of Contents
POWER ON SCREEN ............................................ 6
VOLTAGE TEST .................................................... 7
LOOP CURRENT ................................................... 8
GROUND RESISTANCE ................................. 9
RINGERS COUNT.......................................... 10
RESISTANCE........................................................ 11
INSULATION SOAK...................................... 12
OPENS FAULT LOCATOR ................................ 13
OPENS SETUP ............................................... 14
SEND TONE ........................................................... 16
LOAD COIL COUNT ..................................... 17
DIALING................................................................ 18
AUTODIALER ................................................. 19
LOSS ....................................................................... 20
NOISE AND POWER INFLUENCE................... 21
LONGITUDINAL BALANCE ............................. 22
SELF CALIBRATION.......................................... 23
REGIONAL SETTINGS................................ 24
TYPICAL MEASUREMENTS ON A POTS LINE .... 25
WARRANTY................................................................... 26
INDEX TO SYMBOLS .................................................. 29
Page 1
New features for Version 2.15
The following new features were added to version 2.15
- load coil counter under the 6 ( tone ) key
- ringers counter under the 2 ( mA ) key
- in the autodialer phone number list, the ‘setup’ key can be
used to move backwards through the list
- when testing dead cable, LB is first under the dB key.
- added a backlite timeout. The backlite goes off after 1
minute of inactivity.
Out of the Box
What you will find when you unpack the shipping box:
• 3M ™ Dynatel ™ 945DSP
• Carrying case
• A set of four “AA” alkaline batteries
• Test Leads (red/black pair, and green)
• Instruction manual
• Quick Reference Card
For Technical Service, questions call: 800 426 8688 in the
US or Canada, or contact your local 3M Representative.
For Warranty, Repair or Ordering Information, please refer
to these sections near the end of this manual.
The Dynatel 945DSP comes with a carrying case and
should remain in the case to give extra protection from
shock and the environment. Install the unit in the case by
sliding it under the upper flap and securing it at the bottom
with the elastic strap. The leads are routed out through the
opening in the bottom of the case and may be stored in the
drop down pouch. Be sure to leave enough slack where
the leads enter the pouch to prevent pinching of the wires.
An additional pocket on the outside of the pouch is
provided for storage of the instruction manual.
Page 2
Batteries
A set of four “AA” alkaline batteries are provided. To
install them in the unit, loosen the two screws on the
battery cover and follow the placement diagram in the
bottom of the battery compartment. The unit will operate
for about 25 hours of continuous use ( no backlite ) on a
fresh set of alkaline batteries. You can also install ni-cad
rechargeable batteries that have been charged in a separate
user provided charger.
There is a battery gauge on the main power on screen. See
page 6 for information on this gauge. When the batteries
drop to 4V, an X appears on the gauge indicating you
should change your batteries as soon as possible. The unit
won’t operate when the batteries drop below 3.7V.
Don’t install used batteries in the unit. If one battery in the
pack is discharged more than the others, it will effect the
operation of the battery gauge and could cause the unit to
switch off without the normal low battery warnings.
Screen
The screen format is similar to the following for most
functions.
Graphical icons on the right of the screen indicate the
currently running test and any options that were set up for
the test. Below that is an icon indicating the function of
the setup key . This key is used in different ways for
different tests and the icon in the lower right of the screen
indicates its current function. Test results are displayed in
one or more boxes on the left area of the screen. Generally
a box with a dark bold border is displaying live readings
that change with conditions on the pair. Boxes with
Test Function
Test Options
Setup Key Function
Page 3
thinner borders indicate stored results. When more than
one result is shown on the screen, cycles between them.
The index at the end of this manual is a good way to
quickly find the meaning of any icon. Also, on the inside
pouch of the carrying case there is a card which provides an
easy reference to the most common of the graphical icons.
Test Leads
The Test Lead icons are shown on each of the measurement
screens. Each lead points to a colored dot on the front label
that corresponds to the actual test lead. The labels ,
and correspond to Ring, Ground and Tip for North
America and to B, Earth and A for other countries. All the
tests on the 945DSP use these same connections so there is
no need to rearrange leads between tests:
Red Lead to Ring or B
Green Lead to Ground or
Earth
Black Lead to Tip or A
Also, rearranging the leads or moving the leads to a new
pair while a test is in progress may cause inaccurate results.
You may need to return to the Power On Screen and restart
the test.
Keep the test leads clean and dry at all times to insure best
accuracy of the measurements. Use soap and water to clean
them if necessary.
Page 4
Keypad
The 945DSP Keypad has twenty keys. The twelve blue
keys are dual purpose. In some tests they function as
numeric keys, but most of the time they are used to select a
test.
Page 5
Control Keys
On/Reset/Off - Turns on the unit, or if it is already
on, resets to the power on screen. Press again to
switch off.
Adjusts the speaker volume.
Toggles the backlite on and off
Chooses an option or selects measurement mode
- T or R or G.
Changes the setup of the currently running test.
Undo an action or back up to make corrections
Adjusts contrast up
Adjusts contrast down
Test Keys
Voltage Measurements
Loop Current, Ground Resistance and Ringers
Resistance measurements
Self Calibration.
Opens Length Test
Transmit Tone and Load Counter
Dialing mode.
AC Tests – Loss, Noise, Power Influence and
Longitudinal Balance
Page 6
Power On Screen
Regional Settings - line frequency, units and auto
shut-off
This is the screen that you see when you first turn on the
945DSP. It shows the copyright year and the software
version. The battery symbol on the right gives an
indication of the approximate battery level. When the
voltage reaches 4.0 V, an X will appear on the symbol
telling you the batteries should be replaced. The speaker
is disabled to conserve power. Change your batteries as
soon as possible since the accuracy and operation of the
unit is not guaranteed. The unit shuts off when the battery
voltage reaches 3.7 Volts.
The unit has an auto shutoff timer. After 5 minutes with no
activity, the unit provides 6 quick warning beeps and shuts
itself off. When you hear the beeps, you can press to
prevent shut off. The auto shutoff timer can be disabled in
the regional settings described in the next paragraph.
When at the power on screen, you can press the key to
set regional settings such as ac power line frequency,
measurement units etc. See page Error! Bookmark not
defined.
From the power on screen you can run any test function.
Connect the leads as follows:
Red Lead to Ring or B
Green Lead to Ground or Earth
Black Lead to Tip or A
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