Transcript Document

20/20 TDR
With
TM
TDR PC Vision
Operator Training - Telco
Version – July 2009
Training Subjects
Section Title
Introduction, Power and the CD-ROM
Powering ON & Menus
How TDRs work
Step TDR reflections
Keypad & Measurement Screen Actions
Premise application on Twisted Pair Cable
OSP Applications – Dribble-Up, Splices & Wet Cable
Advanced Features (optional)
Saving Traces and TDR PC Vision (optional)
Cleaning, Maintenance, Warranty & Tech Support
Q & A and Acknowledgements
1
Slide #
2- 6
7 - 15
16 - 21
22 - 27
28 - 31
32 - 41
42 - 46
47 - 52
53 - 67
68 - 69
70
What’s in the Box?
Made in the USA
2
F connector or Network units
with an RJ-45 and F connectors
Quarter VGA backlit LCD
Ruggedized weather resistant keypad
with high tactile feel for use with
gloves
Solid ABS plastic case
3
Battery Installation
F2
BATTERY MENU
Select Alkaline or
NiMH/NiCd and
enter rated mAhrs
CAUTION
NO mixing cells
Same Type & mAhr
4
AC or DC Power and Recharging
(Included with
Rechargeable
TDRs)
100-240 VAC 50/60 Hz
AC power permits operation
AND Recharging
5
12.5 VDC @ 500 mA
Vehicle running is preferred
DC power permits operation
OR recharging, but not both
CD-ROM
CD Directory
TDR PC VisionTM - - - - - - - - - MS Windows software loadable
to any number of PCs
TDR Application Notes - - - - - 20+ Details Notes on TDR uses
Operation Manual
Quick Start Guide
Electronic Copies
Training PPT - - - - - - - - - - - - General/Broadcast
CATV Technician
Telephone Technician
www.aeatechnology.com
6
Powering ON
Pressing ON starts the unit,
performs a self-check
and restores the last used settings
Powering ON with Soft Reset
Press ON and then quickly
pressing ENTER 4 – 5 times
performs a soft reset and restores
factory default settings
7
HIGH VOLTAGE DETECTED
Try pressing ENTER 1 or 2 times to see if the detection clears
If it will not clear, there is more than 100 VDC or 0.5VAC on
the line being tested. Use precautions to remove the TDR and
remove or reduce the voltage prior to retesting.
The 20/20 TDR is protected to 300VAC and 300VDC
8
F1
F-Keys Menu, Channel Guide & ESC
First press
F2 UNIT SETTINGS: BACKLIGHT, CONTRAST
AUDIO, BATT SAVER, BAUD, SELF TEST
F3 DATA DISPLAY: SCALES, GRIDS, UNITS
OHMS/SWR/DB, SCREEN FROMAT
F4 UTILITIES: FAULT/INTERMITTENT FIND
FILTERS, MEM SAVE/RECALL, CH SEL
F5 CABLES: VIEW, CATALOGS, SELECT, EDIT
CABLE SAMPLER, TEST LEAD CALIBRATION
Escape Key
When in Menus F2 – F5
Press to escape back to the
Measurement Screen
If using a Network TDR
Second press
RJ45
CH
A
B
C
D
AB
AC
AD
BC
BD
CD
9
TEL 568A 568B
R/B PR1 PR1
G/B PR2 PR3
PR3 PR2
PR4 PR4
RG 12 13
13 12
14 14
23 23
24 34
34 24
TP- TKN
USOC 10BT PMD RING
PR1
RX
PR2
RX
TX
PR4
TX
RX
PR3
TX
12
TR
14
13
24 TR
23
34
TR
Backspace Key
When in an numeric entry screen,
F1 erases the last character
entered and jumps back one space
5
Function Key Item & Selection Navigation
1
SCALE
5
0
10
 BACKLIGHT TIMER
 BRIGHTNESS
 CONTRAST
 AUDIO VOLUME
………..
9
Z
O
O
M
8
7
S
T
E
P
6
5
C
R
S
R
1
4
3
C
R
S
R
2
2
:OFF
50
20
10
:8
:8
:0
Any arrow key will move
the selection left/right or
Increase/decrease numbers
for the menu item marked
Key – Unit Settings
F2
BACKLIGHT TIMER
BRIGHTNESS
CONTRAST
AUDIO VOLUME
AUDIO MODE
BAUD RATE
BATTERY SAVER
SELF TEST
:OFF {10, 20, 50 sweeps & continuous}
:8
{range 0 to 10}
:8
{range 1 to 15} up for colder temps
:0
{range 0 to 3}
:OFF, KEY BEEP, CONTINUOUS
:57600 {range 4800, 9600, 19200, 28800}
:OFF, ON
:OFF {test list & keypad checker}
BATTERY MENU
:
Internal re-chargeable TDRs have a sub-menu
11
F2
BATTERY MENU
Key – Unit Settings
:
BATTERY SAVER: ON, OFF
BATTERY TYPE : NICD NIMH, ALKALINE
BATT CAPACITY : 2000 MAHR {400 – 5300 mAhr}
EST. RUN TIME : > 7.0 HRS {Max to 0.0 hrs}
BATTERY STATUS : 10.7V -220MA
BATTERY TEMP : TEMPERATURE OK {HOT, COLD}
CHARGER STATUS: IDLE {BATT CHK, PRE CHRG,
CHARGING, TRICKLE}
12
F3
V SCALE
H SPAN
PLOT START
UNITS
GRID LINES
BIG NUMBERS
PLOT TYPE
Key – Data Display Options
: 100
{range 20, 50, 100, 200, 500, 1000}
: 20
{range 20 to 10,000}
:0
{range 0 to 2,500}
: FEET, METERS
:0
{range 0 to 4}
: OFF, ON
: Z OMHS, SWR, RTN AMPL DB
Rechargeable TDRs are Z OHMS only
13
F4
Key – Special Functions
MEMORY ACTION
NOISE FILTER
AVERAGING FLTR
VIDEO FILTER
INTRMTENT GRAB
FAULT FINDER
STEP OR PULSE
INPUT CHANNEL
:
:
:
:
:
:
:
:
◄► TO SAVE/RECALL
0
{range 0 to 4}
0
{range 0 to 7}
0
{range 0 to 4}
OFF, ON
OFF, ON
STEP, PULSE
INPUT COAX, RJ45 CHs A, B, C, D,
AB, AC, AD, BC, BD, CD
Rechargeable TDRs have only STEP mode display
14
F5
Key - Cable Operations
AEA CABLE LIST
{Cables listed by MFG, P/N, Type & Zo}
VIEW USER LIST
{56 User Defined Cables}
EDIT USER LIST
{Define or Alter a Cables Details & Store}
TEST LEAD CAL
{Removes the test lead from the plot}
SAMPLE A CABLE {Find a Cable’s Velocity Factor}
CURRENT CABLE:
GENERIC PIC24AWG------------Z100 VF66.7
15
How Does a TDR Work?
The same as RADAR
Time
16
Cable Velocity and Distance
Velocity is designed in a cable at the time of its manufacture
Velocity is expressed as a fraction of the speed of light
Example:
.66c
Time X Velocity = Distance
2
VF
or
VP
17
20 n Sec X .66c (648,172,800ft/sec) = 64.8 feet
2
VoP
Beware of VF Uncertainty
or
NVP
Impedance “Z”
Z = 100 Ohms
Z = 75 Ohms
18
Cable Impedance (Z) and Reflections
Impedance is a factor of both the conductor and the dielectric of
the insulation between the conductor & shield or twisted pairs
Any deviation from the manufactured Z will cause reflections
Z=
∞Ω
Open
Zo=75 or 100
Open
Zo=75 or 100
Short
19
Z = 0
Short
Pulse TDR
Pulse TDR
Longer and Longer Dead Zones
20
Step TDR
Step TDR = No Dead Zones – Any Range
21
Example Step TDR Reflections
Good Splice
Mixed Impedances
Bridged Tap
Pinched Coax
9
10
Poor Splice
Water
1
1
2
What a “Pulse TDR” Cannot See
22
Split Pair That
Resplits
3
Poor Quality
Coax
20/20 Step TDR Display
TDR Trace
Vertical Scale
or V-Scale
(Z)
Cable Type
Velocity Factor
COMMSCOPE Drop F6 VF 85.0
100
87.5
75
62.5
50
0
20
CRSR1 19ft 10in
40
78.4
to 78.6Ω
Horizontal Span
or H-Span
(Feet or Meters)
Cursor Information
23
Cursor 1
Example 20/20 “Step” TDR Traces
Open Cable or Pair
Shorted Cable or Pair
Opens and shorts send the trace to maximum or zero Ohms respectively.
Unlike a pulse TDR, there is no trace after these events
24
Example 20/20 “Step” TDR Traces
Bad Connector on RG-59
Mixed Z, 75 then 50 Ohm
Both events will cause unwanted signal reflections.
The 50 Ohm cable will add extra signal attenuation
25
Example 20/20 “Step” TDR Traces
Good Splice
Poor Splice
These splices are in 100 Ohm twisted pair cable,
but will appear similar in coaxial cable
26
Example 20/20 “Step” TDR Traces
Wet Cable
Wet cable always show an
erratic downward
excursion on the trace.
27
Split and Resplit
Splits and resplits are common
in home wiring where the owner
didn’t understand the importance
of pairing
GENERIC 24AWG VF 66.7
125
Zoom Key
112
100
87
75
0
9
Z
O
O
M
20
CRSR1 19ft 10in
8
40
100.4 to 100.6
GENERIC 24AWG VF 66.7
125
112
100
87
75
0
9
Z
O
O
M
40
CRSR1 39ft 8in
8
80
100.5 to 100.7
GENERIC 24AWG VF 66.7
125
112
100
87
75
28
0
CRSR1 79ft 6in
80
160
100.4 to 100.6
GENERIC 24AWG VF 66.7
125
Step Key
112
100
87
75
0
20
CRSR1 19ft 10in
7
S
T
E
P
6
125
40
100.4 to 100.6
GENERIC 24AWG VF 66.7
112
100
7
S
T
E
P
6
87
75
40
60
20
CRSR1 39ft 8in
100.5 to 100.7
GENERIC 24AWG VF 66.7
125
112
100
87
75
29
40
60
CRSR1 59ft 6in
80
85.1 to 86.4
5
Scale Key
GENERIC 24AWG VF 66.7
200
150
100
50
0
0
20
CRSR1 19ft 10in
40
100.4 to 100.6
1
GENERIC 24AWG VF 66.7
SCALE
500
0
375
250
125
0
0
20
5
CRSR1 19ft 10in
30
40
100.4 to 100.6
Remaining Keypad Keys
Exam/Plot freezes or
Un-freezes the active
plot
EXAM
Cursor Keys activate,
move & de-activate
either cursor
PLOT
ON
Power OFF
Saves All
Settings
31
OFF
5
C
R
S
R
1
4
3
C
R
S
R
2
2
E
N
T
E
R
Enter saves
menu changes
& returns to
Measurement
Display, Cursor
Hide/Unhide key
Transition from the Theoretical
to the Practical
How can a TDR help you get a clear TV picture,
a quality phone call or a fast internet connection
32
Telco USOC Wiring Scheme for Homes
and Small Businesses
RJ11 Wired
USOC
1 – T2
2 – R1
3 – T1
4 – R2
Black
Red
Green
Yellow
RJ12 Wired
USOC
Bedroom 1
Living Room
Bedroom 2
1 – T3
2 – T2
3 – R1
4 – T1
5 – R2
6 – R3
White/Green
White/Orange
Blue
White/Blue
Orange
Green
Bedroom 3
RJ12 Wired
USOC
1 – T3
2 – T2
3 – R1
4 – T1
5 – R2
6 – R3
33
not connected
Black
Red
Green
Yellow
not connected
Kitchen
NID
Typical Telco Loop Wiring
RJ45 Wired
USOC
1 – T4
2 – T3
3 – T2
4 – R1
5 – T1
6 – R2
7 – R3
8 – R4
White/Brown
White/Green
White/Orange
Blue
White/Blue
Orange
Green
Brown
TIA 568B for Business Wiring or
TIA 570B for Residential Wiring
RJ45 Wired
T-568A
Kitchen
66 Block or
110 Block or
Connection
Box
NID
Living Room
Bedroom 1
Bedroom 2
Bedroom 3
Typical Star or Home Run Wiring
34
1 – T3 White/Green
2 – T3 Green
3 – T2 White/Orange
4 – R1 Blue
5 – T1 White/Blue
6 – R2 Orange
7 – R4 White/Brown
8 – R4 Brown
RJ45 Wired
T-568B
1 – T3 White/Orange
2 – T3 Orange
3 – T2 White/Green
4 – R1 Blue
5 – T1 White/Blue
6 – R2 Green
7 – R4 White/Brown
8 – R4 Brown
AEA Technology Reduced All Wiring
Schemes to Coax & 4 Channels
 99.9% of all phone lines will be on TDR’s Channel A
 The 20/20 TDR menu simplifies looking at any single pair
or the difference between any two pairs
 The 20/20 TDR in impedance independent and can test both
coax and twisted pair cables with the same TDR
 The 20/20 TDR has a customized cable list for Telco techs
that covers OSP PIC & GEL cables, Premise coax and IW
for Cat 2 through Cat 6
35
Three Step Check
1. Unplug all
phones
Living Room
2. Connect the
TDR at NID
3. Locate end
Kitchen
jack using a
shorting plug
Bedroom 1
Bedroom 2
Bedroom 3
Shorting Plug
NID
GENERIC 24AWG VF 66.7
200
150
100
50
0
0
160
320
CRSR1 291ft 10in 101.4 to 101.6 
36
Results
Open and short
at end jack
indicates a good
pair run. Test can
be repeated for
all pairs.
Three Step Check
1. Unplug all
phones
Living Room
2. Connect the
TDR at NID
3. Locate last
Kitchen
visible jack
using a shorting
plug
200
200
150
150
Shorting Plug
Shorting Plug
Bedroom 1
Bedroom 2
Bedroom 3
Shorting Plug
NID
Results
GENERIC
GENERIC 24AWG
24AWG VF
VF 66.7
66.7
100
100
50
50
0
0
37
0
160
320
0
160
320
CRSR1
101.4
CRSR1 155ft
155ft 3in
3in
101.4 to
to 101.6
101.6 

Fault is a broken
wire after the jack
connection in
Bedroom 1’s jack
Three Step Check
1. Unplug all
phones
Living Room
2. Connect the
TDR at NID
3. Note short at
Kitchen
Bedroom 2
with no shorting
plug.
200
Bedroom 1
Bedroom 2
Bedroom 3
NID
GENERIC 24AWG VF 66.7
150
100
50
0
0
160
CRSR1 174ft 7in
38
320
101.5 to 101.8 
Results
Look for bent pins
or shorted wires
inside the jack
Premise Coax – RG-59 and RG-6
1. Both types are 75 Ohm coaxial
2. Impedance changes, 1- 5 Ohms, are common at connections
3. View through splitters is distorted
4. If cable appears to go on forever look for a cable box or TV
attached at the other end
39
CATV Network Devices and
Impedance Mismatches
COMSCOPE RG-6
VF 88.0
200
200
150
150
100
100
50
50
0
0
0
128
256
CRSR1 142ft 10in
88.5 to 89.0 
Network Device
(Splitter or amplifier)
40
COMMSCOPE RG-6
0
CRSR1
CRSR2
CRSR
64
64ft 0in
61ft 7in
3ft 5in
86.3 to
80.5 to
5.8 to
VF 88.0
128
86.7 
80.8 
5.9 
Impedance Mismatch &
Lossy Cable Section
Premise Advantage of a TDR?
 Quickly locate the distance to a fault and see type of fault
 Stop rewiring premise twisted pairs when a simple 5 minute
fix will clear the trouble
 95% of all premise telco wiring problems are in the jacks
1. Customer pulled out jack and broke a wire
2. Customer rewired jack and disrupted service
3. Bent or broken pins
4. Cat marked territory and corroded jack pins
41
OSP Testing and Fault Locating
Range Maximums: velocity dependent – 6,600 ft @ .66c
8,800 ft @ .88c
Measure Cable’s Impedance (Z) & Resistance (Ω) via “Dribble Up”
Use Noise, Averaging or Video Filters to clear the trace
Locates Distance and Impedance effects for:
42
Poor Splices
Cable Kinks
Bad Connections
Cable Damage
Water
Impedance Mismatches
Network Devices
Lossy Cable
What is “Dribble-Up”
Dribble up is the resistance of the pair. Loop resistance for
twisted pair and center conductor resistance for coax.
Step TDR’s add the resistance to the Zo of the conductors.
As the conductors get longer more slope appears.
43
What can Dribble-Up tell me?
You can read the resistance gain over length to see if a cable
meets factory specification
You can see series resistive faults and measure their resistance
You can determine cable gauge and see gauge changes
If this is twisted
pair it jumps from
19 or 22 gauge
to 24 or 26 gauge
across a series
resistive splice
44
VF 88.0
200
150
100
50
0
0
CRSR1
CRSR2
CRSR
64
64ft 0in
61ft 7in
3ft 5in
86.3 to
80.5 to
5.8 to
128
86.7 
80.8 
5.9 
If this is coax the
second section is
very lossy coax
across a series
resistive splice
Poor Splice or Bad Connection
Pulse TDR
GENERIC 24 AWG
20/20 “Step” TDR
VF 67.0
GENERIC 24 AWG
VF 67.0
200
150
100
50
0
0
CRSR
1280
1096ft
2560
0
CRSR1
CRSR2
CRSR
1280
2560
1157ft 0in 156.9 to 157.6 
1096ft 0in 145.8 to 146.1 
61ft 0in
11.1 to 11.5 
Step TDR’s Advantages
1. Series resistive fault with over 11 Ohms of loss in one spot.
2. Both cable sections exhibit normal resistive loss as evidenced by
the “Dribble Up”
45
Water in OSP Cabling
GENERIC 24 AWG
Water Rules
1. Reduces the resistance of
the dielectric or insulation Hence reduces cable’s Z.
2. Reduces velocity to an
unknown – Hence distances in
a water slug or after the slug are
NOT valid.
VF 67.0
200
150
100
50
0
0
640
CRSR1 599ft 7in
599 ft
1280
120.4 to 120.6 
464 ft water
1374 ft
46
311 ft
20/20 TDR’s Advanced Features
Differential Mode ------------ Compares one twisted pair to another
twisted pair and shows any differences
Intermittent Grabber --------- Permits looking for a short or open
and moving the cable or connectors
to find an intermittent fault
Fault Finder ------------------- Set upper and lower impedance limits,
the TDR will jump the cursor to the
first point exceeding the limit.
SWR Mode ------------------ Provides calculated Standing Wave
Ratio of the cable along it’s length
Return Amplitude ---------- Provides calculated Return Amplitude
in dB for mismatch events
47
Jump Forward to Memory Actions
Using Differential Mode
5
1. Measure a single pair in a cable and and note the events
2. Connect the telco test leads’ Green/Black pair or use an RJ45
plug input for access to another of the four pairs
3. Press F4 and select INPUT CHANNEL
4. Press any
key as required to select RJ45 AΔB for telco leads
difference or any other RJ45 xΔx as desired, see QRG table
5. Press ENTER
48
Intermittent Grabber Mode
5
1. Connect the cable with the suspect intermittent fault and full trace
2. Press F4 select INTRMTENT GRAB and press any
key to turn ON
3. Hand-over-hand move along the cable flexing and moving
sections and connection points to induce the fault
NOTE: If the entire trace goes erratic, change the termination and
try again. Fault must be same as termination
49
5
Fault Finder Mode
1. Connect the cable and set the full trace on the display
2. Press F4 and select FAULT FINDER then press
AUTO FAULT LOCATION
UP/DOWN MOVES CURSOR, F1=ESCAPE
LEFT/RIGHT CHANGES SETTING
ENTER RESUMES NORMAL OPERATION
->AUTO FAULT
MINIMUM OHMS
MAXIMUM OHMS
: OFF
: 64
: 86
150
100
86
75
64
50
0
3. Press
to select AUTO FAULT: ON
4. Press
to select MINIMUM OHMS, then MAXIMUM
OHMS and enter the limits for each when prompted
5. Press ENTER to return Measurement Screen and CURSOR 1
will jump to the first minimum or maximum detected
50
5
SWR Mode
1. Press F3 then select PLOT TYPE and press
2. Press
again to change from Z OHMS to SWR
3. Press ENTER
Note the changed vertical scale and cursor readouts for SWR
51
5
Return Amplitude Mode
1. Press F3 then select PLOT TYPE and press
2. Press
again to change from SWR to RTN AMPL DB
3. Press ENTER
Note the changed vertical scale and cursor readouts are now in dB
52
Saving and Recalling Traces
F4
Key – Special Functions
MEMORY ACTION
: ◄► TO SAVE/RECALL
SAVE INST ONLY
[Saves all the instrument set ups]
RECALL INST
SAVE SCREEN
[Saves trace - 250 data points]
RECALL SCREEN
SAVE DETAILED
[Saves trace – 2500 data points
RECALL DETAILED
best for trace over 3K feet]
53
Name Saved Trace
EXAM
PLOT
ABCDE
A
FGHIJ
B
KLMNO
C
PQRST
D
UVWXY
E
F1
F2
F3
F4
F5
Z
space
delete
-
.
•Letters enter in 2 steps, select group first then single letter
•Numbers enter directly from the keypad
54
TDR PC VisionTM Software
 TDR PC Vision is included with every TDR at no extra charge
 Operates on MS Windows® platforms
 Permits upload, archive and export of TDR plots in multiple formats
 Down load instrument settings from PC-to-TDR
 Applications include:
1. Email plots to tech expert or supervisor for assistance
2 Provide plots from field technicians to engineering to
clarify plant issues
3. Develop a database of installations “As-Builts” for later
reference
4. Transfer plots to training to show new technicians
55
Jump forward to Maintenance
Getting Started with TDR PC Vision
1. Open the TDR PC Vision folder on the CD-ROM
2. Double-click on the “Setup.exe” file to start the installation and
follow the MS Windows prompts until installation is complete
3. Connect the 20/20 TDR to the PC serial port using the enclosed
cable
4. Turn ON the TDR and wait for the Measurement Screen
5. Click on the TDR PC Vision icon on your desktop
6. TDR PC Vision will open, search the COM Ports and establish
communications with the TDR
56
TDR PC Vision Options Window
57
Correcting Communications Errors
Before pressing “Retry” check the following:
1. Serial cable is connected at both the PC and TDR
2. TDR is on and at the Measurement Screen
(Menu Screens inhibit communications)
Press “Ignore” to work with archived plots on the PC only
58
TDR PC Vision Options Window
Read Buttons
Read the selected
memory slot and
display a graph of
the plot
Auto Increment
ON – Increments the memory
slot by 1 with each upload
OFF – Manually entering a
memory slot For each upload
Archived Plots
These are plots already saved on the PC. This
button will appear active even if the TDR is
not connected or on.
59
Cursors Data
Cursor Data corresponds to the
color cursor on the graph. Cursor
control is by using the slide bar
arrows or direct mouse pointer on
the cursor line. The DELTA
reading is the difference between
the two cursors.
The Plot
The trace shows both a good and poor splice. The poor splice at the
Red cursor has excessive reflection and the trace exiting is higher
Than the trace entering the splice indicating a series resistive fault.
60
Return to Last Slide
File Menu Items
Opens browser to locate desired Save folder,
in an Archived Plot to locate the .AEA file.
NOTE: Windows will save only the last
Opened or uploaded plot, even if you try to
Save a prior opened plot.
61
Edit and View Menus
Copies graph to Clipboard for pasting in any MS
Windows application
Saves Chart Axis setting
For all new plot imports
62
63
Chart Title Menu
64
Chart Plot Menu
Displays only Impedance (Z) Readings
Displays only Distance Readings
Displays both Impedance (Z) & Distance
Mouse Pointer displays Plot Point Values
65
Press “Connect
Port/Poll TDR”
To retry connection.
A green status
Indicates good
Communications.
“Save Port Settings”
speeds connection
when opening TDR
PC Vision.
66
Use to select a
COM port,
BAUD rate,
lock in 1 port
or select USBto-Serial converter. This
window may also
appear with a
TDR com failure .
67
Cleaning Your 20/20 TDR
1. Always spray cleaners and rinse water on a soft cloth, do NOT
spray directly on the TDR
2. Typical Grime – Use a mild non-abrasive detergent like 409® in
water or glass cleaner (non-ammonia) and rinse water to clean
3. Cable Gel – User liquid “citrus” cleaner to remove
4. Tar, creosote or adhesives – Use WD40® followed with mild
detergent and water
Soft Cases
The soft case should be cleaned the same as the instrument. Use
a soft bush to remove tough dirt. Do NOT immerse in water or dry
in a dryer. Wash and Dry separately, both instrument and case should
be dry before enclosing the instrument in the case.
68
Maintenance, Service and Warranty
Operating Manual, Section 5, Maintenance, Service and Warranty.
Warranty – One year against material & workmanship defects
See “User Troubleshooting Guide”
Questions, By all means – Contact us:
Email
Application Notes
AEA Technology, Inc.
5933 Sea Lion Place, Ste 101
Carlsbad, CA 92010
Tel: 800-258-7805 or +1-760-931-8979
Fax: +1-760-931-8969
69
Operating Manuals
TDR PC Vision
Data Sheets
Questions and Answers
Acknowledgements:
MS Windows is a registered trademark of Microsoft® Corp
409 is a registered trademark of Clorox ® Corp
WD40 is registered trademark of WD40 ® Corp
70