SRAM MTB1 Bicycle-mounted sensor for mechanical power. User Manual

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Date Submitted	2014-07-21 00:00:00
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Power Meter User Manual
Statement of Compliance:
SRAM LLC.
Model#: 0808
FCC ID: C9O-MERC1
IC: 10161A-MERC1
Model#: 0815
FCC ID: C9O-MTB1
IC: 10161A-MTB1
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.
2 This device must accept any interference received, including interference that may cause undesired
operation.
Warning: Any changes or modifications not expressively approved by SRAM could void the user's authority to
operate this equipment.
Note: This equipement 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 and correct the
interference by one or more of the following measures:
1 Reorient or relocate the receiving antenna.
2 Increase the separation between the equipment and receiver.
3 Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
4 Consult the dealer or an experienced radio/TV technician for help.
This product meets the applicable Industry Canada technical specifications.
This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the
following two conditions: (1) this device may not cause interference, and (2) this device must accept any
interference that may cause undesired operation of the device.
The term “IC:” before the radio certification number only signifies that Industry Canada technical specifications were
met.
Statement of RoHS Compliance SRAM LLC. certifies that this product and its packaging are in compliance with
European Union Directive 2002/95/EC on the Restriction of the Use of Certain Hazardous Substances in Electrical
and Electronics Equipment, commonly known as RoHS.
ANT+™ Product Certification
This product is ANT+ certified and complies with the bicycle power ANT+ Device Profile. For a complete listing of
ANT+ Certified Products and their specific interoperability, please visit www.thisisant.com.
SRAM LLC WARRANTY
EXTENT OF LIMITED WARRANTY
Except as otherwise set forth herein, SRAM warrants its products to be free from defects in materials or
workmanship for a period of two years after original purchase. This warranty only applies to the original owner and
is not transferable. Claims under this warranty must be made through the retailer where the bicycle or the SRAM
component was purchased. Original proof of purchase is required. Except as described herein, SRAM makes
no other warranties, guaranties, or representations of any type (express or implied), and all warranties
(including any implied warranties of reasonable care, merchantibility, or fitness for a particular purpose) are
hereby disclaimed.
LOCAL LAW
This warranty statement gives the customer specific legal rights. The customer may also have other rights which
vary from state to state (USA), from province to province (Canada), and from country to country elsewhere in the
world.
To the extent that this warranty statement is inconsistent with the local law, this warranty shall be deemed modified
to be consistent with such law, under such local law, certain disclaimers and limitations of this warranty statement
may apply to the customer. For example, some states in the United States of America, as well as some governments
outside of the United States (including provinces in Canada) may:
a. Preclude the disclaimers and limitations of this warranty statement from limiting the statutory rights of the
consumer
(e.g. United Kingdom).
b. Otherwise restrict the ability of a manufacturer to enforce such disclaimers or limitations.
For Australian customers:
This SRAM limited warranty is provided in Australia by SRAM LLC, 1333 North Kingsbury, 4th floor, Chicago, Illinois,
60642, USA. To make a warranty claim please contact the retailer from whom you purchased this SRAM product.
Alternatively, you may make a claim by contacting SRAM Australia, 6 Marco Court, Rowville 3178, Australia. For
valid claims SRAM will, at its option, either repair or replace your SRAM product. Any expenses incurred in making
the warranty claim are your responsibility. The benefits given by this warranty are additional to other rights and
remedies that you may have under laws relating to our products. Our goods come with guarantees that cannot be
excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and
for compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods
repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.
LIMITATIONS OF LIABILITY
To the extent allowed by local law, except for the obligations specifically set forth in this warranty statement, in
no event shall SRAM or its third party suppliers be liable for direct, indirect, special, incidental, or consequential
damages.
LIMITATIONS OF WARRANTY
This warranty does not apply to products that have been incorrectly installed and/or adjusted
according to the respective SRAM user manual. The SRAM user manuals can be found online at
sram.com, rockshox.com, avidbike.com, truvativ.com, or zipp.com.
This warranty does not apply to damage to the product caused by a crash, impact, abuse of the
product, non-compliance with manufacturers specifications of usage or any other circumstances in
which the product has been subjected to forces or loads beyond its design.
This warranty does not apply when the product has been modified, including, but not limited to any
attempt to open or repair any electronic and electronic related components, including the motor,
controller, battery packs, wiring harnesses, switches, and chargers.
This warranty does not apply when the serial number or production code has been deliberately
altered, defaced or removed.
This warranty does not apply to normal wear and tear. Wear and tear parts are subject to damage
as a result of normal use, failure to service according to SRAM recommendations and/or riding or
installation in conditions or applications other than recommended.
Wear and tear parts are identified as:
• Dust seals
• Bushings
• Air sealing o-rings
• Glide rings
• Rubber moving parts
• Foam rings
• Rear shock mounting
hardware and main seals
• Upper tubes (stanchions)
• Stripped threads/bolts
(aluminium, titanium,
magnesium or steel)
• Brake sleeves
• Brake pads
• Chains
• Sprockets
• Cassettes
• Shifter and brake cables
(inner and outer)
• Handlebar grips
• Shifter grips
• Jockey wheels
• Disc brake rotors
• Wheel braking surfaces
• Bottomout pads
• Bearings
• Bearing races
• Pawls
• Transmission gears
• Spokes
• Free hubs
• Aero bar pads
• Corrosion
• Tools
• Motors
• Batteries
Notwithstanding anything else set forth herein, the battery pack and charger warranty does not
include damage from power surges, use of improper charger, improper maintenance, or such other
misuse.
This warranty shall not cover damages caused by the use of parts of different manufacturers.
This warranty shall not cover damages caused by the use of parts that are not compatible, suitable
and/or authorised by SRAM for use with SRAM components.
This warranty shall not cover damages resulting from commercial (rental) use.

TABLE OF CONTENTS
POWER METER ANATOMY���������������������������������������������������������������������������������������� 6
INSTALLATION������������������������������������������������������������������������������������������������������������� 7
MAGNET INSTALLATION�����������������������������������������������������������������������������������������������������������������������7
BB CUP MOUNT INSTALLATION��������������������������������������������������������������������������������������������������������8
CABLE GUIDE MOUNT INSTALLATION�������������������������������������������������������������������������������������������9
ADHESIVE PUTTY INSTALLATION��������������������������������������������������������������������������������������������������10
CRANK INSTALLATION��������������������������������������������������������������������������������������������� 11
SET UP�������������������������������������������������������������������������������������������������������������������������� 11
LED FUNCTIONALITY���������������������������������������������������������������������������������������������������������������������������� 11
PAIRING������������������������������������������������������������������������������������������������������������������������������������������������������� 12
ZEROING����������������������������������������������������������������������������������������������������������������������������������������������������� 12
CHAINRING INSTALLATION�������������������������������������������������������������������������������������14
MAINTENANCE AND CARE���������������������������������������������������������������������������������������15
BATTERY INFORMATION��������������������������������������������������������������������������������������������������������������������� 15
BATTERY CARE���������������������������������������������������������������������������������������������������������������������������������������� 15
CLEANING�������������������������������������������������������������������������������������������������������������������������������������������������� 15
TROUBLESHOOTING��������������������������������������������������������������������������������������������������16
Table of Contents
P OW E R M E T E R A N ATO M Y
Crankarm Spider Serial
Number/ANT+ ID
Battery Compartment
LED
Cadence Sensor Ring
Cadence Sensor Ring Label
Power meter Anatomy
I N S TA L L AT I O N
M AG N E T I N S TA L L AT I O N
Quarq power meters measure cadence using a magnet, or if a magnet is not present, by using an accelerometer
that is built into the power meter.
Using a magnet is the best method for measuring cadence; it is accurate to +/- 1.5% regardless of environmental
conditions. When properly installed, the magnet should be in line with the cadence sensors and within 2-8 mm
of the sensor ring. If necessary, magnets may be stacked to achieve the proper distance to the sensor.
NOTIC E
Do not allow the magnet to contact the power meter.
If the magnet becomes dislodged or is removed, the built in accelerometer is automatically enabled.
Using the accelerometer to measure cadence offers the convenience of not having to install a magnet. The
accelerometer was specifically developed for bikes that have limited options for magnet placement. While the
magnet provides the most accurate cadence measurement, the accuracy of the accelerometer is excellent up to
160 rpm and in all environmental conditions except those that produce severe vibrations.
It is easier to install the magnet when the cranks are not installed on the frame.
BB Cup Mount
Cable Guide Mount
Adhesive Putty
INSTALLATION
B B C U P M O U N T I N S TA L L AT I O N
The BB Cup Mount is only compatible with threaded bottom brackets. It does not work with frames that have
bearings pressed into the bottom bracket (BB30, PF30, etc.). Frames using threaded bottom bracket adapters
(ie. SRAM GXP30 BB Adapter) may use the BB Cup Mount if the mount is installed onto the threaded drive side
bottom bracket cup.
1. If necessary, remove the existing cranks and bottom bracket.
2. Slide the BB Cup Mount over the threads of the drive side bearing cup with the magnet facing away from the
frame.
3. Hold the magnet at the 9 o’clock position while the bottom bracket is tightened to the manufacturer’s
recommended torque.
4. Confirm the magnet is within 2-8 mm (1/16”-3/8”) of the sensor.
2-8 mm
(1/16”-3/8”)
BB Cup Mount Installation
C A B L E G U I D E M O U N T I N S TA L L AT I O N
The Cable Guide Mount should only be used when the cable guide is fastened with a screw. If the cable guide is
fastened with a rivet, use the Bottom Bracket Cup Mount or Adhesive Putty instead.
NOTIC E
Do not allow the magnet to contact the power meter. When properly installed, the magnet should be in line with
the cadence sensors and within 2-8 mm (1/16”-3/8”) of the sensors.
1. Remove the existing cranks.
2. Loosen the cable guide screw. It may be helpful to shift the front derailleur to the small chainring position, and
the rear derailleur to the smallest cog. This will reduce the cable tension, and make it easier to slide the cable
guide mount under the cable guide.
3. Slide the mount under the cable guide. The guide can be installed with the magnet pointed down (as
illustrated) or up.
4. Reinstall the cranks.
5. Tighten the cable guide screw.
6. Confirm the magnet is within 2-8 mm (1/16”-3/8”) of the sensor.
2-8 mm
(1/16”-3/8”)
Cable Guide Mount Installation
A D H E S I V E P U T T Y I N S TA L L AT I O N
The included adhesive putty will permanently attach the magnet to your frame. Other non-permanent
attachment options include: hot glue, some epoxies, electrical tape, or similar adhesives.
NOTICE
Do not allow the magnet to contact the power meter. When properly installed, the magnet should be in line with
the cadence sensors and within 2-8 mm (1/16”-3/8”) of the sensors. Depending on your frame, you may need to
stack magnets to achieve this distance.
1.
Remove the existing cranks.
2.
Use the included sandpaper to gently scuff the frame where the magnet will be mounted. The center of
the magnet should be positioned between 27.5 mm and 30 mm (1” - 1 1/8”) from the center of the bottom
bracket.
3.
Clean the frame with the included alcohol pad prior to attaching the magnet.
4.
Knead both colors of adhesive putty with your fingers until you have one consistent color.
5.
Place a 6 mm (1/4”) diameter ball of putty on the back of the magnet, and then press the magnet onto the
frame.
6.
Use a toothpick to carefully remove any excess putty before it dries. The putty will set up in about 10
minutes, and will cure in 1 hour.
7.
Reinstall the cranks.
8.
Confirm the magnet is within 2-8 mm (1/16”-3/8”) of the sensor.
1 2
3 4
5 6
7 8
10
20
mm/i
nch
1 2
3 4
30
40
OFF
10
Adhesive Putty Installation
ON
ZERO
100
120
5 1
130
140
C R A N K I N S TA L L AT I O N
Install the crankset and bottom bracket assembly onto your bike according to the manufacturer’s instructions.
Once the crankset has been installed, the power meter must not contact the frame or any other components.
Please contact Quarq customer service with any frame compatibility questions. An updated list of compatible
frames is available at Quarq.com.
SET UP
LED FUNCTIONALITY
The LED provides useful information about the operating condition of the power meter. See the ‘Self-Test’ in the
Troubleshooting section for more LED information.
The LED will flash:
•
•
•
•
twice when battery is inserted
once when waking
once when finished zeroing (calibration)
once when entering the sleep state
LED
Crank Installation
11
PAIRING
Before pairing your power meter to a computer, make sure you are at least 10 meters (30 feet) from any other
ANT+™ device. This will keep you from accidentally pairing to another person’s ANT+ device.
To pair the power meter with an ANT+ computer, first spin the crank backwards 2-3 times to wake the power
meter and begin broadcasting ANT+ messages. The power meter will shut off after 10 minutes of inactivity.
Follow the pairing instructions specific to your ANT+ computer.
GARMIN® EDGE® 800
Quick Tap On/Off → tap the Dumbbell icon
→ Search
“Power Meter Detected” will flash up on your screen when the units are paired.
GARMIN EDGE 500
Menu → Settings → Bike Settings → Bike 1 → ANT+Power → Search
“Power Meter Detected” will flash up on your screen when the units are paired.
GARMIN EDGE 510, 810
Connections
→ tap the Dumbbell icon
→ Search
GARMIN EDGE 1000
Drag Screen Down → Sensors → Add Sensors → Power
“Power Meter Detected” will appear on your screen when the units are paired.
12
Pairing
ZEROING
The power meter must be zeroed to compensate for environmental changes. The power meter can be zeroed
two ways: Auto Zero and Manual Zero.
When to perform the Zero procedure
For best results, you should perform the Manual Zero procedure before each ride. The Auto Zero procedure
can be performed instead of a Manual Zero or if your computer cannot send a “Calibrate” command; if the
temperature changes greatly during your ride; or if you are getting inaccurate data.
Manual Zero
The Manual Zero procedure should be performed before every ride with the rider off the bike and with the
drive-side crank arm at 6 o’clock.
The power meter may be zeroed manually by sending the “Calibrate” command from an ANT+™ compatible bike
computer. The power meter will return the Zero Offset value (or “Current Calibration” on some computers) to the
computer; however, not all ANT+ computers will display the value. The Zero Offset is typically between +/- 1000.
Some units will always have a Zero Offset value outside of this range without any impact on performance. What
is more important is that the pre- and post-ride Zero Offset values are within 50 points of each other. If the
pre- and post-ride Zero Offset values frequently vary by more than 50, or if day-to-day values vary widely,
please call Quarq customer service.
When performing the Manual Zero procedure, put the drive side crank arm in the 6 o’clock position, keeping the
cranks stationary with no force on the pedals. Follow the pairing instructions specific to your ANT+ computer to
send the “Calibrate” command. The LED will flash one time when zeroing is complete.
GARMIN® EDGE® 800
Quick Tap On/Off → tap the Dumbbell icon
→ Calibrate
GARMIN® EDGE® 500
Menu → Settings → Bike Settings → Bike 1 → Ant+Power → Calibrate
GARMIN® EDGE® 510 & 810
Connections
→ tap the Dumbbell icon
→ Calibrate
GARMIN EDGE® 1000
Drag Screen Down → Sensors → 'SENSOR NAME' → Sensor Detail → Calibrate
Zeroing
13
ZEROING CONTINUED
Auto Zero
Spin the crank backwards for 4-5 complete revolutions. The LED will flash one time when zeroing
is complete. The computer will not display the Zero Offset value. The Auto Zero procedure may be
performed while coasting with the rider on the bike, stopped using one or both feet, or by hand with the
rider off of the bike.
Zero Offset Stabilization
With a new power meter or newly installed chainrings, the zero offset takes 2-3 rides to stabilize. During
this time you should perform the Manual Zero procedure regularly to ensure accurate power readings.
Short, hard efforts in both chainrings on your first ride will speed up stabilization.
14
ZEROING CONTINUED
CHAINRINGS
C H A I N R I N G I N F O R M AT I O N
On power meters with OmniCal™ you can swap chainrings without impacting accuracy. They do not
need recalibration when you change chainrings or chainring sizes. Power meters with OmniCal™ only
require re-calibration when moving from two chainrings to a single chainring, like moving to a Force
CX 1 X-Sync chainring.
XX1 power meters do not have OmniCal™. They are factory calibrated for 32T and 34T X-Sync
chainrings. XX1 power meters require recalibration if you install a 36T or 38T X-Sync chainring.
Re-calibration can be done using Qalvin, Quarq's diagonstics App.
The zero offset will change whenever chainrings are removed and/or reinstalled. The zero offset
will take 2-3 rides to stabilize.
Recalibration is never required if you are replacing worn chainring(s) with new chainrings of the
same make and mode.
CHAINRINGS
15
C H A I N R I N G I N S TA L L AT I O N
When installing chainrings you must align the chainring tabs and derailment pin so they are in line with the
crank arm.
Tighten the SRAM steel chainring bolts to 10 N·m (88.5 in-lb). Tighten other chainring bolts according to
the manufacturer’s instruction.
Hidden bolt crank
Knurled Edge
Chainring bolt
Non-hidden bolt crank
16
CHAINRING INSTALLATION
MAINTENANCE AND CARE
B AT T E RY I N F O R M AT I O N
• The power meter is powered by a CR2032 coin cell battery.
• Do not use any tools to remove the battery cap.
Using a tool to remove the cap from the base of the battery compartment can
damage or break the entire compartment.
• Use your hand to unthread the lid counter-clockwise. The battery should be
installed with the “+” facing out. Reinstall and hand tighten the battery cover
after the battery is replaced.
• The power meter automatically switches on when the crankarms are rotated,
and shuts off after about 10 minutes of inactivity. Under normal operating
conditions the battery will last for about 300 hours of riding.
• The power meter will send a warning when the battery is low. However, not all
ANT+™ computers will display the message.
• The power meter retains its sensor ID throughout battery changes and will remain properly paired with your
computer.
B AT T E RY C A R E
• The battery must be installed correctly (“+” out) and have sufficient charge.
• Periodically check the battery compartment to make sure the battery contact is free of corrosion and
moisture.
CAUTION : FIRE HAZARD
Use only the recommended battery in your power meter. Use of any battery other than the recommended
may cause the battery to explode and catch on fire. Dispose of used batteries according to local
regulations.
CLEANING
The power meter is very durable; however, periodic cleaning is recommended. Use a rag to wipe debris from the
power meter, crankarms, magnet, and chainrings. Brush the power meter, crankarms, magnet, and chainrings
with clean or soapy water, then rinse with clean water and let air dry. Do not use harsh chemicals and do not use
a high-pressure washer.
MAINTENANCE AND CARE
17

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