Transcript Document

E20/20 Step TDR
CATV
Operator Training
January 24, 2012
Rev B – 11/21/12
Table of Contents
Subject
E20/20 Step TDR and Accessories
About the E20/20 TDR
Batteries & Battery Power
How TDR’s work and Cable Construction
Power On/Off, LCD Display & Example Traces
Keypad & Menu Keys
Function Keys
Advanced Features
Premise Cable Testing
OSP Cable Testing
ETDR PC Vision
Cleaning E20/20 TDR
Warranty, Maintenance & Contact Info
Questions & Acknowledgements
2
Slides
1-7
8-9
10
11-17
18-22
23-30
31-35
36-41
42-49
50-53
54-61
62
63
64
E20/20 TDR with Soft Carrying Case
Our Soft Carrying
Case is now
Standard with all
E20/20 TDR
Models
3
E20/20 TDR & Included Accessories
AC and DC Power
Adapters
USB Cable
A-to-Mini B
E20/20F Network
TDR
Not Pictured:
CD-ROM
Quick Start Guide
Basic Guide
F-toAlligator
Clips Lead
4
Belt Case
RJ-45 to Telco
Clips Lead
CD Folders
CD-ROM
ETDR PC VisionTM - - - - - - - - MS Windows XP or Win 7software
TDR Application Notes - - - - - - 20+ Detailed Notes on TDR uses
Operation Manual - - - - - - - - - Electronic Copy Only
Basic Guide - - - - - - - - - - - - - Backup to Printed Copy
Quick Start Guide - - - - - - - - - Backup to Printed Copy
Training PPTs - - - - - - - - - - - - General/Broadcast Training
CATV Technician
Telephone Technician
Also available at:
www.aeatechnology.com
5
AC or DC Power and Recharging
100-240 VAC 50/60 Hz
AC power permits operation
AND Recharging
6
12.5 VDC @ 500 mA
Vehicle running is preferred
DC power permits operation
OR recharging, but not both
Optional Accessories
Hard Carrying Case
Test Leads
F Test Lead
4ft (1.2m) Quick Connect
DC Power Cord Ext.
USB Cable Ext.
7
E20/20 Instrument Layout
Connector combination for CATV
model is F and RJ-45
Quarter VGA backlit display
High tactile feel & weather resistant
keypad with Function Key LEDs
Rugged ABS plastic case with
prop stand on the back
8
E20/20F Network Top End
DC Input
power jack
F Connector
(field
replaceable)
USB-2 Mini Port
Charging
Indicator LED
RJ-45 Port
9
Battery Installation
Meter
BATTERY MENU
Select Alkaline or
NiMH/NiCd and
enter rated mAhrs
CAUTION
NO mixing cells
Same Type & mAhr
10
How Does a TDR Work?
The same as RADAR
Time
11
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
Examples:
.66c or 66.7c
Time X Velocity = Distance
2
VF
or
VP
12
20 n Sec X .66c (648,172,800ft/sec) = 6.48 feet
2
VoP
Beware of VF Uncertainty
or
NVP
Impedance “Z”
Z = 100 Ohms
Z = 75 Ohms
13
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=50 or 100
Open
Zo=50 or 100
Short
14
Z = 0
Short
Pulse TDR
Pulse TDR
Longer and Longer Dead Zones
15
Step TDR
Step TDR = No Dead Zones – Any Range
Fault readings in Ohms
16
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
17
Split Pair That
Resplits
3
Poor Quality
Coax
Powering Up/Down
ON cycle runs Self Test,
Calibration, and Restores
last use settings
Input over-voltage
protection up to 250 VAC or DC
Input Voltage Detect Warning
(>1VAC pk-to-pk or 50VDC)
OFF cycle saves all
settings
Battery Saver shuts down
saves all settings
18
Soft Reset & Hard Power Down
Perform Soft Reset if: 1. TDR menu cursors are unresponsive
2. Measurement Screen disorganized
3. Other performance issues
“Default Settings” will flash
in the splash screen and
ENTER Then
Then ENTER
Measurement Screen will
open to 0-1KΩ Z Scale
1 Sec
Press & Hold
2 Sec Release
Perform a Hard Power Down if TDR will not turn off normally
Press and hold for 10 seconds
Then power on with a Soft Reset
19
Measurement Screen
Cable Type,
Impedance, &
Velocity
Impedance
Scale
1 of 2
Cursors
Plot Range
Cursor Data – Feet, Inches or meters and Impedance
20
Blinking Low
Battery indicator
(~20 minutes
power remaining)
Example E20/20 TDR Traces
21
Series Resistive Fault
Cable Short
Pinched Coax
Wet Cable
Example E20/20 TDR Traces
Good Splice
Bridged Tap
22
Bad Splice
Coax Shield Fault
Keypad
LED’s indicate
active Function keys
Exits menu and
saves changes
Cable ID tones
for coax &
twisted pair
Enters A/N changes,
distance marks, &
Soft Reset
ON/OFF
23
Menu keys
By name
Cell style alphanumeric entry
pad
Cursors, & data
selection
control
Keypad Controls
ENTER
Used to confirm or accept
alpha-numeric entries, highlighted
list selections and cursor marked
entries for certain features
Soft Reset - Press 4-5 times fast after
pressing ON key to activate.
Esc
24
Return to Measurement Screen
from menu or back up one menu
level. Saves all menu changes
Help Key
Help
HELP OVERVIEW
SETUP WIZARD
MENU OPERATION
THE CABLE
THE TEST LEADS
KEY FUNCTIONS
‘ ‘,’ ‘: SELECT A TOPIC
‘ENTER’:VIEW TOPIC HELP
25
With NO action keys or other
menu key selected
Step-by-step set up guidance
How the menus work
Cable menu options guide
Test Lead Null guide
Action keys’ LEDs guide
Context Sensitive Help Example
Range
Context sensitive help works
with active Function keys
or menu keys and cursor
selected features and functions
26
Help
RANGE CONTROL
: INCREASE RANGE
: DECREASE RANGE
ADJUSTS THE TOTAL DISTANCE
DISPLAYED ON THE TRACE
Meter Menu
Meter
Off, Low, Med, & High
METER SETTINGS
BACKLIGHT
: HIGH
CONTRAST
:9
INPUT CHANNEL : COAX INPUT
KEYPAD BEEP
: ON
BATTERY MENU : ABOUT 5.5HRS
DATE/TIME
:
22 DEC 2011 12:10PM
Raise for cold, lower for hot
Coax or RJ45 CH A thru D
ON or OFF
► to open full menu
►Sub menu to change
27
Trace Menu
Trace
20, 50, 100, 200, 500, & 1K
TRACE OPTIONS
Z SCALE (OHMS)
TRACE RANGE
START DISTANCE
MICRO FAULT
TEST LEAD NULL
NOISE FILTER
: 200
: 50
:0
: OFF
: OFF
: OFF
ON or OFF
28
10ft – 20Kft (2m – 5Km)
Shifts display range by entry.
0 = TDR connector or Test Lead
end if Test Lead Null ON
OFF, KINKS ONLY or ALL FAULTS
(slides 37 & 38 for details)
ON or OFF (slide 39 for details)
Memory Menu
Memory
ENTER MEMORY NAME
‘0’ TO ‘9’: DIGIT OR CHARACTER
: MOVE EDIT CURSOR
: ERASE/START OVER
‘ENTER’ : ACCEPT AND CONTINUE
MEMORY OPERATIONS
*
*ENTER NAME*
*
SAVE
RECALL
PRIOR SETTINGS
Delete Trace – Highlight – Bcksp
CAUTION: NO UNDELETE
29
A B C OPERATION
DEF
MEMORY. ,RECALL
1
2
3
***START OF LIST***
JKL
MNO
GHI
LMR-400 ANT-2
Z50 VF 85.0
4
5
6
RG-58 XMIT-6
Z50
VF 83.5
PQRS
TUV
WXYZ
RG-58 XMIT-8
Z50
VF 83.5
CAT5 CONTL
LINE
Z100
VF 72.3
7
8
9
LMR-400 ANT-1
Z50 VF 85.0
%&=
*EMPTY Bcksp
SLOT*
0
SAVED 30 AUG 2011 10:31AM
ENTER:SELECT SLOT, ESC:QUIT
CABLES LIST
***START OF LIST***
GENERIC RG8/U
TIMES RG6/U
IW-CAT 3 24AWG
IW-CAT 5 24AWG
IW-CAT 5E 24AWG
Cables Menu
Cables
CABLE SELECTION
PICK/EDIT LIST
MANUAL ENTRY
VELOCITY SRCH.
SAMPLE A CABLE
DISTANCE UNITS: FEET
SELECTED CABLE:
COMSCOPE .625
ZO 75 VF 87.0
30
Z0 52 VF 66.0
Z0 75 VF 66.0
Z0 100 VF 67.0
Z0 100 VF 70.0
Z0 100 VF 72.0
‘ENTER’:SELECT THIS CABLE
‘BCKSP’: EDIT CABLE ‘ESC’: QUIT
ENTER THE CABLE MANUALLY
Find a cable’s VF from known
DESCRIPTION
: SAMPLED
points
– guided :process
CABLE Z0
50
VELOCITY FACT. : 67.6
Compute a cable’s VF
by testing a sample of
known length – guided
process
Range
Increase/decrease display range
Minimum 10 ft or 2m
Maximum 20Kft or 5Km
31
Zoom
Zooms on
active cursor
Zoom Limits: Minimum 10ft (2m)
to Maximum Set Range
32
Z
Scale
Scales: 20, 50, 100, 200, 500, & 1KΩ
On lower Scale settings cable Z0
will stay centered
33
Crsr 1
Crsr 22
Crsr
Single active cursor has LED lit
Rules when both cursors are on screen:
1. Both LEDs are lit
2. Last cursor key touched is active
3. Last cursor key touched appears on
LCD with differential readings to other
cursor’s – distance and Ohms
34
Tones generated on coax or
selected twisted pair
Tone
Use on
Battery power
only
TONE GENERATOR
‘ ‘,’ ‘: SELECT A DIFFERENT TONE
‘BCKSP’:
VIEWGENERATOR
THE LIST OFLIST
TONES
TONE
900/1100
HZTDR MODE WARBLE
‘TONE’:
EXIT TO
977.5 HZ
STEADY
977.5 HZ
INJECTING
A WARBLE TONE PULSED
ONTO:
HZ
STEADY
RJ45 850
CH A
850 HZ
WARBLE PULSED
577 HZ
STEADY
PRESENT
VALUE: 900/1100HZ
577 HZ
PULSED
35
Meter
INPUT CHANNEL:
Most standard inductive
amplifiers (probes) will pick
up the tones
TDR trace is not available
while toning the cable.
Battery Saver is suspended
Press
Tones
Bcksp
for a menu of
E20/20 TDR Advanced Features
Trace
Cables
36
MICRO FAULT – Locate minute defects in coax
TEST LEAD NULL – Remove unknown test lead
length from measurement
VELOCITY SEARCH – Pin-Point an installed cable’s
true VF based on cable’s
known length or known
distance to an event.
SAMPLE A CABLE – Find the VF for a cable sample
to apply to all the cable in that
box, reel or lot number.
Micro Fault
► MICRO FAULT – KINKS ONLY
For small kinks and crushes
in coax cables
TDR’s normal display will
shift to an amplified reflection
display with Z0 as base line .
In this example a fault barely
seen in the normal impedance
display shows up clearly.
Trace
37
Micro Fault
► MICRO FAULT – ALL FAULTS
Mainly for coax or high
quality twisted pairs
TDR’s normal display will
shift to an amplified reflection
Display Z0 centered, no
dribble-up & reduced Z Scale.
In this example a fault barely
Seen in the normal impedance
display shows up clearly.
Trace
38
Test Lead Null
TRACE OPTIONS
Trace
Z SCALE (OHMS) : 200
TRACE RANGE
: 50
START DISTANCE : 0
MICRO FAULT
: OFF
TEST LEAD NULL : OFF
NOISE FILTER
: OFF
‘ ‘=OFF, ‘ ‘=ON,”ENTER”=SET NULL
Use a cursor to mark the
End of the test lead and
Press
to set the length
ENTER
39
Velocity Search
When to use – If you have an installed cable with known
lengths either to the end or an event on the cable. E20/20 will
compute the cable’s VF based on marking the distance with a
cursor, then use the
to adjust the cable end or event to
that distance.
ENTER
Press
when end of
cable and cursor are aligned
to use the modified VF and
return to Measurement Screen
40
Sample a Cable
When to use – If you have a cable sample 10-50ft (3-15m)
with an accurately measured length, and plan to install or test
cable’s from it’s same reel or box.
Mark the end of the sample.
Press
and enter ft then in.
Press ENTER TDR computes VF
41
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
42
Telco USOC Wiring Scheme for Homes
and Small Businesses
Bedroom 1
RJ11 Wired
USOC
1 – T2
2 – R1
3 – T1
4 – R2
Black
Red
Green
Yellow
Living Room
Bedroom 2
Bedroom 3
Kitchen
NID
Typical Telco Loop Wiring
43
RJ12 Wired
USOC
1 – T3
2 – T2
3 – R1
4 – T1
5 – R2
6 – R3
not connected
Black
Red
Green
Yellow
not connected
TIA 568C for Business Wiring or
TIA 570B for Residential Wiring
RJ45 Wired
T-568A
Kitchen
Living Room
66 Block or
110 Block or
Connection
Box
Bedroom 1
Bedroom 2
NID
Bedroom 3
Typical Star or Home Run Wiring
44
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 RJ45 Channels
 99.9% of all phone lines will be on TDR’s Channel A or
look at any other single pair
 The E20/20 TDR in impedance independent and can test
both coax and twisted pair cables with the same TDR
 The E20/20 TDR has a customized cable list for CATV
techs that covers OSP coax, coax drops and twisted
pairs for Cat 2 through Cat 6.
 ETDR PC Vision can upload, modify, store & download
cable lists to the E20/20 TDR
45
Three Step Check
1. Unplug all
phones
2. Connect the Living Room
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 
46
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
2. Connect the Living Room
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
47
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
2. Connect the Living Room
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
48
320
101.5 to 101.8 
Results
Look for bent pins
or shorted wires
inside the jack
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
49
OSP Testing and Fault Locating
Ranges: 0-10ft to 0-20Kft
Example Range Resolutions: 10ft=0.5inch, 500ft=2ft, 2000ft=8ft
Use “Zoom” to improve horizontal resolution at cursor
Use “Z Scale” to increase vertical resolution – Minimum +10 Ohms
Measure Cable’s Impedance (Z) & Resistance (Ω) “Dribble Up”
Use Noise Filter to clear the trace from ingress or CATV signal
Locates Distance and Impedance effects for:
Poor Splices
Bad Connections
Cable Kinks
Cable Damage
Water & wet taps
Network Devices
Impedance Mismatches Lossy Cable
50
Water in OSP Cabling
COMMSCOPE 0.540
VF 88.0
200
150
100
50
0
0
640
CRSR1 599ft 7in
599 ft
1280
80.4 to 80.6 
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.
464 ft water
1374 ft
51
311 ft
Network Devices and
Impedance Mismatches
COMMSCOPE 0.540
200
COMMSCOPE 0.540
200
150
150
100
100
50
50
0
0
0
Z0 75 VF 88.0
1280
2560
CRSR1 1423ft 10in 88.5 to 89.0 
Network Device
52
0
CRSR2
CRSR
Z0 75 VF 88.0
640
610ft 7in
31ft 5in
1280
80.5 to
5.8 to
80.8 
5.9 
Impedance Mismatch &
Lossy Cable Section
Questions on E20/20 TDR?
Next subject – ETDR PC Vision
53
ETDR PC VisionTM Software
Operates on: Windows XP®, Windows 7® or Vista® Platforms
No platform license – Load on any number of PC’s
Upload TDR’s saved or current traces to the PC
Archive the traces on the PC or other memory media
Upload and Download Cable Lists to the E20/20 TDR
Upload and Download instrument setups to the E20/20 TDR
54
Getting Started with ETDR PC Vision
1. Locate ETDR PC Vision folder on the enclosed CD-ROM
or download it from www.aeatechnology.com
2. Turn on the E20/20 TDR and wait for the Measurement
Screen (will not communicate if off or in menus).
3. Connect the TDR and PC using the supplied USB Cable
4. Double-click the icon on the desktop to open application
55
User Friendly Communications Setup
ETDR PC Vision automatically scans for the E20/20 TDR when it opens
FTDI Drivers
May need to be
installed. Drivers
are located on
enclosed CD
and instructions
are in the Operator
Manual.
56
Get Trace Tab
TDR’s current
LCD trace
Open a previously
saved trace on
the PC or other
storage media.
Usable without
TDR connected
57
Stored Traces Tab
ANTENNA 2
ANTENNA 5
CON. 401
CON. 331
SENSOR 6-1
SENSOR 6-2
FLIR 1
50
50
100
100
100
100
75
78.6
78.6
67.7
67.7
72.3
72.3
74.8
12/30/11
12/30/11
1/3/12
1/3/12
1/5/12
1/5/12
1/10/12
11:58
12:26
07:39
08:38
09:11
09:15
10:27
Caution – There is NO UNDELETE
58
Press first to
upload a list
of stored
traces
Direct save TDR
memory to PC
folder
Graphic Plot Screen
59
Setup Tab
Press either
to obtain
valid data
(gray text is
not valid)
60
Cables Tab
Read the Cable
List
Writefrom
the TDR
Cable
or from
a TDR
List
to the
stored
on the
or
to a list
stored
list
PCthe PC
on
Use these keys and “Select Cable Values” to edit the list
61
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.
62
Maintenance, Service and Warranty
Basic Guide or Operator Manual, Maintenance, Service &
Warranty.
Warranty – One year against material & workmanship defects
See “User Troubleshooting Guide”
Email
Questions, By all means – Contact us:
AEA Technology, Inc.
5933 Sea Lion Place, Ste 112
Carlsbad, CA 92010
Tel: 800-258-7805 or +1-760-931-8979
Fax: +1-760-931-8969
63
Application Notes
Operating Manuals
Quick Start Guide
TDR PC Vision
Data Sheets
Questions
on
E20/20 Step TDR
ETDR PC Vision software?
Windows 7, Vista, and Windows XP are registered trademarks of Microsoft® Corp.
409 is a registered trademark of Clorox® Corp.
WD-40 is a registered trademark of WD-40® company
64