Crestron MM-HTDR
MediaManifold™ Cable Analyzer
Operations Guide
This document was prepared and written by the Technical Documentation department at:
Crestron Electronics, Inc.
15 Volvo Drive
Rockleigh, NJ 07647
1-888-CRESTRON
All brand names, product names and trademarks are the property of their respective owners.
©2007 Crestron Electronics, Inc.
Crestron MM-HTDR MediaManifold™ Cable Analyzer
Contents
MediaManifold™ Cable Analyzer: MM-HTDR 1
Introduction ...............................................................................................................................1
Features and Functions................................................................................................ 1
Specifications ..............................................................................................................1
Specifications ..............................................................................................................2
Physical Description.................................................................................................... 3
Industry Compliance ...................................................................................................6
Setup .......................................................................................................................................... 7
Getting Started............................................................................................................. 7
Installation................................................................................................................... 8
Hardware Hookup .......................................................................................................8
Operation .................................................................................................................................10
Measure Cable Length with the MM-DS-12............................................................. 10
Measure the Remainder on a Cable Spool.................................................................12
Other Functions ......................................................................................................... 12
Problem Solving ......................................................................................................................14
Troubleshooting......................................................................................................... 14
Reference Documents................................................................................................14
Further Inquiries........................................................................................................15
Future Updates ..........................................................................................................15
Return and Warranty Policies.................................................................................................. 16
Merchandise Returns / Repair Service ......................................................................16
CRESTRON Limited Warranty.................................................................................16
Operations Guide – DOC. 6602A Contents • i
Crestron MM-HTDR MediaManifold™ Cable Analyzer
y op
MediaManifold™
Cable Analyzer: MM-HTDR
Introduction
The Crestron MM-HTDR MediaManifold™ Cable Analyzer is a portable
handheld device used to determine the length and integrity of RG6 cable
runs. Using time domain reflectometry, the MM-HTDR can measure
cable lengths up to 999 feet*. When used in conjunction with the
MM-DS-12 MediaManifold CATV Distribution System, the MM-HTDR
can automatically set the optimum gain and tilt settings for each zone
based on the length measured (up to 300 feet maximum). The
MM-HTDR can also be used to determine if a cable is shorted. Singlebutton operation makes it simple to set up a complete MediaManifold
system.
* Cable manufactures may include several extra feet on 1000-foot cable spools.
Since the MM-HTDR can only display up to 999 feet, lengths beyond this value
are displayed with a “0” as the first digit, followed by the remaining distance
beyond 1000 feet (up to 1099 feet total).
Features and Functions
• Handheld device measures RG6 cable length and checks for
shorts and opens in RG6 cable runs
• Uses time domain reflectometry to determine the length and
integrity of each RG6 cable run and set the optimum gain and
tilt settings
• Single-button control allows for simple operation
• Connects with MM-DS-12 MediaManifold™ CATV
Distribution System for quick input of measured lengths
• Batter
Operations Guide – DOC. 6602A MediaManifold™ Cable Analyzer: MM-HTDR • 1
eration allows for portable use
MediaManifold™ Cable Analyzer Crestron MM-HTDR
Specifications
MM-HTDR Specifications
SPECIFICATION DETAILS
Minimum Cable Length
Open Cable
Shorted Cable
Maximum Cable Length 999 feet
Resolution
00.0 feet to 99.9 feet
100 feet to 999 feet
Cable Velocity Factor 0.60 to 1.00 (0.82 default)
Power Requirements
Battery Life (approx.)
Automatic Shutoff
Enclosure Black plastic installed in
Environmental
0 feet
5 feet
0.1 feet
1 foot
9 Volt Battery (included)
4 hours (>10,000 measurements)
5 seconds
removable rubberized case with
integrated stand
Temperature 41º to 104ºF (5º to 40ºC)
Humidity 10% to 90% RH
(non-condensing)
Dimensions (with case)
Height 1.68 in (4.27 cm)
Width 3.95 in (10.04 cm)
Depth 6.12 in (15.55 cm)
Weight 0.83 lbs (379 g)
2 • MediaManifold™ Cable Analyzer: MM-HTDR Operations Guide – DOC. 6602A
Crestron MM-HTDR MediaManifold™ Cable Analyzer
Physical Description
This section provides information on the connections, controls and
indicators available on your MM-HTDR.
MM-HTDR Physical View
Operations Guide – DOC. 6602A MediaManifold™ Cable Analyzer: MM-HTDR • 3
MediaManifold™ Cable Analyzer Crestron MM-HTDR
MM-HTDR Overall Dimensions
1
1.68 in
(4.27 cm)
3.95 in
2
(10.04 cm)
3
4
5
6
7
8
9
Connectors, Controls & Indicators
# CONNECTORS,
CONTROLS &
INDICATORS
1 TO MM-DS-12
5.85 in
(14.86 cm)
6.12 in
(15.55 cm)
DESCRIPTION
(1) 3.5mm TRS mini-phone
jack.
Connects to the MM-DS-12
during setup.
6 foot (1.83 m) interface cable
included.
(Continued on following page)
4 • MediaManifold™ Cable Analyzer: MM-HTDR Operations Guide – DOC. 6602A
Crestron MM-HTDR MediaManifold™ Cable Analyzer
Connectors, Controls & Indicators (Continued)
# CONNECTORS,
CONTROLS &
INDICATORS
2 75 OHM CABLE
3 FEET
4 CALIBRATION
DESCRIPTION
(1) F-type coaxial, female.
Connects to RG6 cable under
test.
Nominal Impedance: 75 ohms
(1) 3-digit green LED display,
displays cable length in feet.
(3) Recessed buttons used to
calibrate the MM-HTDR. The
MM-HTDR can be calibrated by
adjusting to a known cable
length or setting the cable’s
velocity factor. For more
information, refer to
“Calibration” on page 13.
5 OPEN LED (1) Green LED, indicates cable
under test is unterminated
(normal).
6 75 OHMS LED (1) Yellow LED, indicates cable
under test is terminated or
connected to a device.
7 SHORT LED (1) Red LED, indicates cable
under test is shorted.
8 LOW BATT LED (1) Red LED indicates battery
should be replaced.
9 START BUTTON
(1) Square pushbutton, initiates
measurement process.
Operations Guide – DOC. 6602A MediaManifold™ Cable Analyzer: MM-HTDR • 5
MediaManifold™ Cable Analyzer Crestron MM-HTDR
Industry Compliance
NOTE: 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.
This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to part 15 of the FCC Rules. These limits
are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses
and can radiate radio frequency energy and if not installed and used in
accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will
not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct
the interference by one or more of the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from
that to which the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.
6 • MediaManifold™ Cable Analyzer: MM-HTDR Operations Guide – DOC. 6602A
Crestron MM-HTDR MediaManifold™ Cable Analyzer
Setup
Getting Started
Before using the MM-HTDR, the battery must be installed. To install the
battery:
• Remove the protective boot by pulling the top of the boot over the
“F” connector on top of the unit. Once the top of the boot has been
pulled off, the boot can be easily removed.
• Turn the unit over to reveal the battery compartment cover.
• Push down on the grated surface and slide the battery cover in the
direction shown by the arrow as shown in the following diagram.
Insert Battery
+
Insert the included battery as shown above. Observe polarity.
•
• Replace the battery cover.
• Replace the boot by putting the bottom part on the MM-HTDR
then pulling the top of the boot over the top of the MM-HTDR.
Operations Guide – DOC. 6602A MediaManifold™ Cable Analyzer: MM-HTDR • 7
MediaManifold™ Cable Analyzer Crestron MM-HTDR
Installation
The MM-HTDR can “stand up” using the tilt stand that is built into the
protective boot as shown in the following diagram.
MM-HTDR on Integrated Tilt Stand
Hardware Hookup
8 • MediaManifold™ Cable Analyzer: MM-HTDR Operations Guide – DOC. 6602A
Make the necessary connections as called out in the illustration that
follows this paragraph.
When making connections to the MM-HTDR, consider the following:
• The MM-HTDR can only be used with RG6 cable.
• When connecting to the MM-DS-12, use the included interface
cable.
Crestron MM-HTDR MediaManifold™ Cable Analyzer
Hardware Connections for the MM-HTDR
TO MM-DS-12:
75 OHM CABLE:
CONNECT CABLE TO BE
ANALYZED
MM-DS-12 MEDIAMANIFOLD
CATV DISTRIBUTION
SYSTEM
(SOLD SEPARATELY)
Operations Guide – DOC. 6602A MediaManifold™ Cable Analyzer: MM-HTDR • 9
MediaManifold™ Cable Analyzer Crestron MM-HTDR
Operation
The MM-HTDR can be used to measure cable length and troubleshoot
RG6 cable runs.
Measure Cable Length with the MM-DS-12
When connected to an MM-DS12 CATV Distribution System,
measurements up to 300 feet can be automatically sent to the MM-DS-12
for zone configuration.
Preparation
To prepare the MM-HTDR for measurement, perform the following:
1. On the MM-DS-12, select the zone to be measured. For more
information, refer to the latest version of the MM-DS-12
Operations & Installation Guide (Doc. 6600) which can be
downloaded from the Crestron website
(www.crestron.com/manuals).
2. Disconnect the cable to be measured from the selected MM-DS-12
zone and connect to the MM-HTDR as shown in the following
diagram. The cable to be measured should not be connected to any
other device(s).
Connect MM-HTDR to Cable Length and MM-DS-12
ZONE 1
(NOT CONNECTED)
3. OPTIONAL:
⇒ To have measurement data automatically transferred to the
MM-DS-12, connect the included interface cable to the
MM-DS-12 as shown in the following diagram.
10 • MediaManifold™ Cable Analyzer: MM-HTDR Operations Guide – DOC. 6602A
Crestron MM-HTDR MediaManifold™ Cable Analyzer
⇒ Set the zone to be measured in the Feet mode. For more
information, refer to the latest version of the MM-DS-12
Operations & Installation Guide (Doc. 6600).
Connect MM-HTDR to Cable Length and MM-DS-12
L
A
N
O
I
T
P
O
ZONE 1
(NOT CONNECTED)
Measure
To measure the cable length and transfer the measurement to the
MM-DS-12, press the START button. The MM-HTDR will display the
measured results.
• When the OPEN LED is lit, the cable’s measured length will be
displayed in feet. If the MM-HTDR is connected to an MM-DS-12,
the measured length (up to 300 feet) will be automatically set for
the zone displayed on the MM-DS-12. For more information, refer
to the latest version of the MM-DS-12 Operations & Installation
Guide (Doc. 6600).
NOTE: If the measurement is greater than 300 feet, the
measurement will not be transferred.
NOTE: The settings transferred to the MM-DS-12 can be
adjusted from the MM-DS-12’s control panel. Refer to the latest
version of the MM-DS-12 Operations & Installation Guide for
more information.
NOTE: Since the MM-HTDR can only display up to 999 feet,
lengths beyond this value are displayed with a “0” as the first digit,
followed by the remaining distance beyond 1000 feet (up to 1099
feet total).
Operations Guide – DOC. 6602A MediaManifold™ Cable Analyzer: MM-HTDR • 11
MediaManifold™ Cable Analyzer Crestron MM-HTDR
• When the 75 OHMS LED is lit, the end of the cable has been
terminated well enough that a measurement cannot be made. Three
dashes will be displayed.
NOTE: If the MM-HTDR is connected to an MM-DS-12, the
setting on the MM-DS-12 will not change.
• When the SHORT LED is lit, the cable length displayed
represents the distance from the MM-HTDR to the short in the
cable line.
NOTE: If the MM-HTDR is connected to an MM-DS-12, the
measured length will be automatically set for the zone displayed on
the MM-DS-12 (up to 300 feet).
Low Battery
Measure the Remainder on a Cable Spool
The MM-HTDR can also be used to measure remaining cable left on a
spool of RG6 cable. The MM-HTDR can measure cable lengths up to
999 feet.
To measure an unknown length of cable, perform the following:
• Attach an “F” terminator to one end of the unknown cable.
• Connect the MM-HTDR to the cable and press START. The
measured length will be displayed.
NOTE: Since the MM-HTDR can only display up to 999 feet, lengths
beyond this value are displayed with a “0” as the first digit, followed by
the remaining distance beyond 1000 feet (up to 1099 feet total).
Other Functions
The MM-HTDR will turn off approximately five seconds after the last
button press.
Low Battery
If the LOW BATT LED is lit, the battery should be changed. Refer to
“Getting Started” on page 7 for instructions on installing a battery.
12 • MediaManifold™ Cable Analyzer: MM-HTDR Operations Guide – DOC. 6602A
Crestron MM-HTDR MediaManifold™ Cable Analyzer
Calibration
While the default factory calibration will provide sufficient accuracy to
properly adjust the MM-DS-12, calibration can be performed to improve
the accuracy of cable length measurements. Calibration can be done by
calibrating with a cable of a known length or entering the “Velocity
Factor” (if known) of the cables to be measured.
Calibrate the MM-HTDR to a Known Length:
If a cable run with a known length is not being measured correctly, the
MM-HTDR can be calibrated using the known length of cable as a
reference point.
NOTE: Although shorter cable lengths can be used, calibration with 10
feet or more of cable will provide maximum accuracy.
To calibrate the MM-HTDR with a known cable length:
⇒
Connect the measured cable to the MM-HTDR and press the
START button. The measured length will be displayed.
⇒
Hold the START button and press the j or k buttons until the
correct cable length is displayed.
⇒
Release the buttons to store the calibration setting.
⇒
To reset the MM-HTDR to the factory calibration setting, press the
DEFAULT CAL button.
Calibrate the MM-HTDR to the cable’s Velocity Factor:
Velocity factor is a parameter that characterizes the speed at which an
electrical signal passes through a medium. Expressed as a ratio, it is the
ratio of a signal's transmission speed compared to the speed of light in
vacuum.
If a cable’s velocity factor is specified by the cable manufacturer, the
MM-HTDR can be calibrated to the cable’s specified velocity factor.
⇒
Press the j or k buttons until the Velocity Factor that is specified
by the cable is displayed.
⇒
To reset the MM-HTDR to the factory setting (0.82), press the
DEFAULT CAL button.
Operations Guide – DOC. 6602A MediaManifold™ Cable Analyzer: MM-HTDR • 13
MediaManifold™ Cable Analyzer Crestron MM-HTDR
Problem Solving
Troubleshooting
The following table provides corrective action for possible trouble
situations. If further assistance is required, please contact a Crestron
customer service representative.
MM-HTDR Troubleshooting
TROUBLE POSSIBLE
CAUSE(S)
Device does not
function.
No
measurement.
Inaccurate
measurement.
Weak or no
battery.
Battery is
incorrectly
installed.
Cable is
terminated.
Incorrectly
calibrated.
Cable is shorted. Remove object
Reference Documents
CORRECTIVE
ACTION
Install fresh 9 Volt
battery.
Install battery with
correct polarity.
Leave end of cable
open.
Calibrate MM-HTDR
as described on page
13.
causing the short.
The latest version of all documents mentioned within the guide can be
obtained from the Crestron website (http://www.crestron.com/manuals
This link will provide a list of product manuals arranged in alphabetical
order by model number.
List of Related Reference Documents
).
DOCUMENT TITLE
MM-DS-12 Operations & Installation Guide
14 • MediaManifold™ Cable Analyzer: MM-HTDR Operations Guide – DOC. 6602A
Crestron MM-HTDR MediaManifold™ Cable Analyzer
Further Inquiries
If you cannot locate specific information or have questions after
reviewing this guide, please take advantage of Crestron's award winning
customer service team by calling the Crestron corporate headquarters at
1-888-CRESTRON [1-888-273-7876]. For assistance in your local time
zone, refer to the Crestron website (http://www.crestron.com/offices
a listing of Crestron worldwide offices.
You can also log onto the online help section of the Crestron website
(http://www.crestron.com/onlinehelp
products. First-time users will need to establish a user account to fully
benefit from all available features.
) to ask questions about Crestron
) for
Future Updates
As Crestron improves functions, adds new features and extends the
capabilities of the MM-HTDR, additional information may be made
available as manual updates. These updates are solely electronic and
serve as intermediary supplements prior to the release of a complete
technical documentation revision.
Check the Crestron website periodically for manual update availability
and its relevance. Updates are identified as an “Addendum” in the
Download column.
Operations Guide – DOC. 6602A MediaManifold™ Cable Analyzer: MM-HTDR • 15
MediaManifold™ Cable Analyzer Crestron MM-HTDR
Return and Warranty Policies
Merchandise Returns / Repair Service
1. No merchandise may be returned for credit, exchange or service without prior authorization
from CRESTRON. To obtain warranty service for CRESTRON products, contact an
authorized CRESTRON dealer. Only authorized CRESTRON dealers may contact the factory
and request an RMA (Return Merchandise Authorization) number. Enclose a note specifying
the nature of the problem, name and phone number of contact person, RMA number and
return address.
2. Products may be returned for credit, exchange or service with a CRESTRON Return
Merchandise Authorization (RMA) number. Authorized returns must be shipped freight
prepaid to CRESTRON, 6 Volvo Drive, Rockleigh, N.J. or its authorized subsidiaries, with
RMA number clearly marked on the outside of all cartons. Shipments arriving freight collect
or without an RMA number shall be subject to refusal. CRESTRON reserves the right in its
sole and absolute discretion to charge a 15% restocking fee plus shipping costs on any
products returned with an RMA.
3. Return freight charges following repair of items under warranty shall be paid by CRESTRON,
shipping by standard ground carrier. In the event repairs are found to be non-warranty, return
freight costs shall be paid by the purchaser.
CRESTRON Limited Warranty
CRESTRON ELECTRONICS, Inc. warrants its products to be free from manufacturing defects in materials
and workmanship under normal use for a period of three (3) years from the date of purchase from
CRESTRON, with the following exceptions: disk drives and any other moving or rotating mechanical
parts, pan/tilt heads and power supplies are covered for a period of one (1) year; touchscreen display and
overlay components are covered for 90 days; batteries and incandescent lamps are not covered.
This warranty extends to products purchased directly from CRESTRON or an authorized CRESTRON
dealer. Purchasers should inquire of the dealer regarding the nature and extent of the dealer's warranty, if
any.
CRESTRON shall not be liable to honor the terms of this warranty if the product has been used in any
application other than that for which it was intended or if it has been subjected to misuse, accidental
damage, modification or improper installation procedures. Furthermore, this warranty does not cover any
product that has had the serial number altered, defaced or removed.
This warranty shall be the sole and exclusive remedy to the original purchaser. In no event shall
CRESTRON be liable for incidental or consequential damages of any kind (property or economic damages
inclusive) arising from the sale or use of this equipment. CRESTRON is not liable for any claim made by a
third party or made by the purchaser for a third party.
CRESTRON shall, at its option, repair or replace any product found defective, without charge for parts or
labor. Repaired or replaced equipment and parts supplied under this warranty shall be covered only by the
unexpired portion of the warranty.
Except as expressly set forth in this warranty, CRESTRON makes no other warranties, expressed or
implied, nor authorizes any other party to offer any warranty, including any implied warranties of
merchantability or fitness for a particular purpose. Any implied warranties that may be imposed by law are
limited to the terms of this limited warranty. This warranty statement supersedes all previous warranties.
Trademark Information
All brand names, product names and trademarks are the sole property of their respective owners. Windows is a registered trademark
of Microsoft Corporation. Windows95/98/Me/XP/Vista and WindowsNT/2000 are trademarks of Microsoft Corporation.
16 • MediaManifold™ Cable Analyzer: MM-HTDR Operations Guide – DOC. 6602A
Crestron MM-HTDR MediaManifold™ Cable Analyzer
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MediaManifold™ Cable Analyzer Crestron MM-HTDR
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Crestron MM-HTDR MediaManifold™ Cable Analyzer
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Operations Guide – DOC. 6602A MediaManifold™ Cable Analyzer: MM-HTDR • 19
Crestron Electronics, Inc. Operations & Installation Guide – DOC. 6602A
15 Volvo Drive Rockleigh, NJ 07647 (2018380)
Tel: 888.CRESTRON 08.07
Fax: 201.767.7576 Specifications subject to
www.crestron.com change without notice.
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