This treadmill is intended for commercial use. To ensure your safety
and protect the equipment, read all instructions before operating the
Matrix Treadmill.
Please leave a 78.75" (2000 mm) x 39.50" (1000 mm) landing
zone behind the treadmill. This zone is to allow easy access to the
treadmill and gives the user an easy exit path from the machine. In
case of an emergency, place both hands on the side arm rests to
hold yourself up and place your feet onto the side rails.
2
CHAPTER 2: IMPORTANT SAFETY INSTRUCTIONS
2.2 READ AND SAVE THESE INSTRUCTIONS
This treadmill is intended for commercial use. To ensure your
safety and protect the equipment, read all instructions before
operating the MATRIX T1xe-01 treadmill.
When using an electrical product, basic precautions should always
be followed including the following:
DANGER: To reduce the risk of electric shock: Always unplug
this equipment from the electrical outlet immediately after
using and before cleaning.
WARNING: To reduce the risk of burns, fire, electrical shock
or injury to persons that may be associated with using this
product.
An appliance should never be left unattended when plugged in.
Unplug from the outlet when not in use and before putting on or taking off parts.
This product must be used for its intended purpose described in this
service manual. Do not use other attachments that are not recommended by the manufacturer. Attachments may cause injury.
To prevent electrical shock, never drop or insert any object into any
opening.
Do not remove the console covers. Service should only be done by
an authorized service technician.
Never operate the treadmill with the air opening blocked. Keep the
air opening clear, free of lint and hair.
Never operate product if it has a damaged cord or plug, if it is working improperly, if it has been damaged, or immersed in water.
CAUTION: If you experience chest pain, nausea, dizziness or
shortness of breath, STOP exercising immediately and consult a physician before continuing.
Do not carry this unit by its supply cord or use the cord as a handle.
Keep any power cord away from heated surfaces.
Close supervision is necessary when the treadmill is used by or near
children or disabled persons.
Do not use outdoors.
Do not operate where aerosol (spray) products are being used or
when oxygen is being administered.
To disconnect, turn all controls to the off position, then remove plug
from the outlet.
Connect this treadmill to properly grounded outlets only.
3
CHAPTER 2: IMPORTANT SAFETY INSTRUCTIONS
2.3 ELECTRICAL REQUIREMENTS
For your safety and to ensure good treadmill performance, the ground on this circuit must be non-looped. Please refer to NEC articles 210-21 and 210-23.
Your treadmill is provided with a power cord with a plug listed below and requires the listed outlet. Any alterations of this power cord could void all warranties
of this product..
MATRIX DEDICATED CIRCUIT / ELECTRICAL
REQUIREMENT INFO
All Matrix treadmills require the use of a 20 amp "dedicated circuit" with a non-looped (isolated) neutral / ground for the power requirement.
Quite simply this means that each outlet you plug your treadmill into should not have anything else running on that same circuit. The easiest
way to verify this is to locate the main circuit breaker box, and turn off the breaker(s) one at a time. Once a breaker has been turned off, the
only thing that should not have power to it is the treadmill. No lamps, vending machines, fans, sound systems, or any other item should lose
power when you perform this test.
Non-looped (isolated) neutral / grounding means that each circuit must have an individual neutral / ground connection coming from it, and
terminating at an approved earth ground. You cannot "jumper" a single neutral / ground from one circuit to the next.
In addition to the dedicated circuit requirement, the proper gauge wire must be used from the circuit breaker box, to each outlet that will have
the maximum number of units running off of it. If the distance from the circuit breaker box, to each outlet, is 100 feet or less, then 12 gauge
wire may be used. For any distance greater than 100 feet from the circuit breaker box to the outlet, 10 gauge wire must be used.
4
CHAPTER 3: PREVENTATIVE MAINTENANCE
3.1 RECOMMENDED CLEANING TIPS3.2 CHECK FOR DAMAGED PARTS
Preventative maintenance and daily cleaning will prolong the life and
look of your MATRIX T1xe-01 Treadmill.
DO NOT use any equipment that is damaged or has worn or
broken parts. Use only replacement parts supplied by Matrix
Fitness Systems.
MAINTAIN LABELS AND NAMEPLATES. Do not remove labels
for any reason. They contain important information. If unreadable
or missing, contact Matrix Fitness Systems for a replacement at
866-693-4863 or www.matrixfitness.com.
MAINTAIN ALL EQUIPMENT. Preventative maintenance is the
key to smoothly operating equipment. Equipment needs to be
inspected at regular intervals. Defective components must be
kept out of use until they are repaired. Ensure that any person(s)
making adjustments or performing maintenance or repair of any
kind is qualified to do so. Matrix Fitness Systems will provide
service and maintenance training at our corporate facility upon
request or in the field if proper arrangements are made.
5
CHAPTER 3: PREVENTATIVE MAINTENANCE
3.3 CARE AND MAINTENANCE INSTRUCTIONS
In order to maximize life span, and minimize down time, all Matrix Fitness System's equipment requires regular cleaning, and maintenance
items performed on a scheduled basis. This section contains detailed instructions on how to perform these items and the frequency of which
they should be done. Some basic tools and supplies will be necessary to perform these tasks which include (but may not be limited to):
* Metric Allen wrenches
* #2 Phillips head screwdriver
* Adjustable wrench
* Torque wrench (capability to read foot lbs and inch lbs)
* Lint free cleaning cloths
* Teflon based spray lubricant such as "Super Lube" or other Matrix approved products.
* Mild water soluble detergent such as "Simple Green" or other Matrix approved products
* Vacuum cleaner with an extendable hose and crevasse tool attachment.
You may periodically see addendums to this document, as the Matrix Technical Support Team identifies items that require specific attention, the
latest version will always be available on the Matrix web site at www.matrixfitness.com.
DAILY MAINTENANCE ITEMS
1) Clean the entire machine using water and mild detergent such as "Simple Green", or other Matrix approved solutions (cleaning agents
MUST be alcohol and ammonia free).
2) Check the emergency stop button and cord for proper operation.
MONTHLY MAINTENANCE ITEMS
1) Inspect the power cord for damage, inspect the hand grip areas, and inspect the emergency stop button and cord for proper operation.
2) Check the running belt for proper tension, adjust as needed.
QUARTERLY MAINTENANCE ITEMS
1) Remove the front plastic cover, and vacuum the entire inside area of machine. Be careful when working around the MCB not to bump any
wires or connections loose.
2) Check the drive belt for visible wear, ie, cracking, tears, etc. The belt should be replaced if there are any visible signs of damage. Proper
alignment of the pulley / tensioner should be verified at this time as well.
3) Remove the motor cover at the front of the machine. Start the unit and raise the incline settings to maximum height. Turn the power switch
off at the front of the machine to prevent it from lowering accidentally. Lubricate the incline motor Acme screw (Matrix recommends Super Lube
brand grease with PTFE additive).
BI-ANNUAL MAINTENANCE ITEMS
1) Remove any wax build up from the front and rear rollers of the machine.
2) Inspect the underside of the running belt for damage, check for cracking or glazed surfaces.
3) If the belt has damage or wear to it that warrants replacement, note that a new running belt should ALWAYS be installed on a new deck
surface (deck should either be flipped or replaced to gain a new surface).
4) During normal operating conditions, the running belt replacement and deck service should be done every 15,000 miles.
6
CHAPTER 3: PREVENTATIVE MAINTENANCE
3.4 AUTO CALIBRATION INSTRUCTIONS
Run Auto Calibration to calibrate incline after assembly and after
replacing any electronic component.
AUTO CALIBRATION PROCEDURE:
1) Press ENTER, 2, 0, 0, 1, then ENTER. Engineering Mode will
appear on the display.
2) Press the button next to CALIBRATION..
3) Press the button next to AUTO CALIBRATION. You SHOULD NOT
be standing on the unit while it is calibrating.
4) After completion, the display will state either Complete or Auto
Calibration failed.
5) Press the button next to BACK then the button next to HOME to
return to normal operation mode. You can also press the Emergency
Stop.
3.5 ADJUSTING THE RUNNING BELT
After placing the treadmill in the position it will be used, the belt
must be checked for proper tension and centering. The belt may
need to be adjusted after the first 2 hours of use. Temperature,
humidity, and use cause the belt to stretch at different rates. If
the belt starts to slip when a user is on it, be sure to follow the
directions below.
STEP 1: Locate the two hex head bolts on the rear of the treadmill.
The bolts are located at each end of the frame at the back of the
treadmill. These bolts adjust the rear roller. Do not adjust until the
treadmill is on. This will prevent over tightening of one side.
STEP 2: The belt should have equal distance on either side
between the frame. If the belt is touching one side, do not start
the treadmill. Turn the bolts counter clockwise approximately one
full turn on each side. Manually center the belt by pushing the belt
from side to side. Tighten the bolts the same amount as when the
user loosened them, approximately one full turn. Inspect the belt
for damage.
STEP 3: While the treadmill is running at 3 mph, observe the belt
position. If it is moving to the right, tighten the right bolt by turning
it clockwise 1/4 turn, and loosen the left bolt 1/4 turn. If it is moving
to the left, tighten the left bolt by turning it clockwise 1/4 turn and
loosen the right 1/4 turn. Repeat Step 3 until the belt remains
centered for several minutes.
STEP 4: Check the tension of the belt. The belt should be very
snug. When a person walks or runs on the belt, it should not
hesitate or slip. If this occurs, tighten the belt by turning both bolts
clockwise 1/4 turn. Repeat if necessary.
7
CHAPTER 3: PREVENTATIVE MAINTENANCE
3.6 KNOWING WHEN TO REPLACE THE RUNNING BELT AND DECK
One of the most common wear and tear items on a treadmill is the deck and belt combination. If these two items are not properly maintained,
they can cause damage to other components. Always keep your deck and belt free of dirt and dust by wiping the edges of the belt and deck and
up to 2" under the belt with a clean dry cloth.
To tell if your deck and belt combination needs to be replaced:
1) Have someone between 150-200lbs run on the treadmill at about 3 MPH.
2) Use a multi - meter to measure the amp draw with the user running. During normal use, the amp draw should be close to 5 amps. If the amp
draw is significantly higher than 5 amps, replace the belt and / or flip / replace the running deck.
8
CHAPTER 4: CONSOLE OVERLAY AND WORKOUT DESCRIPTION
4.1 T1XE-01 CONSOLE DESCRIPTION
MULTI-PURPOSE KEYS: Keys have different functions depending on each screen.
GO: One touch Start and Quick Start.
ENTER: To confirm each program setting.
UP / DOWN INCLINE: Easy information and incline selection.
UP / DOWN SPEED: Easy information and speed selection.
UP / DOWN TIME: Easy information and time adjustment.
EMERGENCY STOP / IMMOBILIZATION: To stop all functions and immobilize the unit. The emergency stop on this treadmill must be returned
to its original position in order to allow normal operation of the unit.
STOP: Ends workout and shows workout summary data.
PAUSE: Pauses workout. Pause duration can be set in Manager Mode.
NUMBER KEYPAD: Workout data input for workout setup. Speed adjustment during workout.
COOL DOWN: Puts treadmill into Cool Down mode. Cool Down time is dependent on the length of the workout. Workouts 19 minutes and
shorter will have a cool down length of 2 minutes. Workouts 20 minutes and longer will have a cool down length of 5 minutes.
T1XE ENTERTAINMENT ZONE
POWER: Allows the user to cycle through console display options, TV, or profile display.
VOLUME UP / DOWN: Adjusts the volume output through the headphone jack of either add on TV or integrated console TV.
NUMBER KEYPAD: Allows for easy TV channel selections. These buttons work for either the add on TV or the integrated console TV.
CHANNEL UP / DOWN: Allows for channel selection on either the add on TV or the integrated console TV.
DISPLAY MODE: Allows user to cycle through console display options, TV, or profile display.
LAST CHANNEL: Allows the user to cycle between the current channel and the previous channel they were viewing.
9
CHAPTER 4: CONSOLE OVERLAY AND WORKOUT DESCRIPTION
4.2 MANUAL WORKOUT OPERATION
QUICK START OPERATION
Press the GO key and the treadmill will enter into a manual mode of operation. All energy expenditure values will be calculated using the default
weight measurement.
MANUAL WORKOUT OPERATION
Manual is a workout that allows you to manually adjust the speed and incline values at anytime. The manual workout also contains a setup
screen which allows you to input your weight to help calculate a more accurate caloric burn rate.
To enter into this Manual Workout:
1) Choose a Manual Workout by selecting the button next MANUAL WORKOUT on the display.
2) Enter the desired workout length using the ARROW KEYS or the NUMBER KEYPAD and press ENTER.
3) Enter the user's weight (the user's weight is used to calculate the caloric expenditure value-providing an accurate weight helps to ensure an
accurate caloric expenditure rating for each user) using the ARROW KEYS or the NUMBER KEYPAD and press ENTER.
4) Enter the desired start speed using the ARROW KEYS or the NUMBER KEYPAD and press ENTER.
6) Press GO to begin the workout.
4.3 LEVEL BASED WORKOUT OPERATION
Your Matrix T1xe-01 Treadmill offers a variety of level-based workouts to challenge users of all fitness levels. The following information will
briefly explain the workouts and how to program the treadmill for each workout selection.
ROLLING HILLS WORKOUT OPERATION
Rolling Hills is a level based workout that automatically adjusts the incline value to simulate walking or running up hills.
1) Choose a Rolling Hills workout by selecting the key next to ROLLING HILLS on the display.
2) Enter the desired workout length using the ARROW KEYS or the NUMBER KEYPAD and press ENTER.
3) Enter the desired intensity level using the ARROW KEYS or the NUMBER KEYPAD and press ENTER.
4) Enter the user's weight (the user's weight is used to calculate the caloric expenditure value, providing an accurate weight helps to ensure an
accurate caloric expenditure rating for each user) using the ARROW KEYS or the NUMBER KEYPAD and press ENTER.
5) Press GO to begin the workout.
FAT BURN WORKOUT OPERATION
Fat Burn is a level-based workout that is designed to help users burn fat through various incline changes.
1) Choose a Fat Burn workout by selecting the key next to FAT BURN on the display.
2) Enter the desired workout length using the ARROW KEYS or the NUMBER KEYPAD and press ENTER.
3) Enter the desired intensity level using the ARROW KEYS or the NUMBER KEYPAD and press ENTER.
4) Enter the user's weight (the user's weight is used to calculate the caloric expenditure value, providing an accurate weight helps to ensure an
accurate caloric expenditure rating for each user) using the ARROW KEYS or the NUMBER KEYPAD and press ENTER.
5) Press GO to begin the workout.
5K RUN WORKOUT OPERATION
5K Run is a level-based workout with a fixed distance of 5 kilometers. Incline is adjusted automatically throughout the workout. You control the
speed.
1) Choose a 5K Run workout by selecting the key next to 5K RUN on the display.
2) Enter the desired intensity level using the ARROW KEYS or the NUMBER KEYPAD and press ENTER.
3) Enter the user's weight (the user's weight is used to calculate the caloric expenditure value, providing an accurate weight helps to ensure an
accurate caloric expenditure rating for each user) using the ARROW KEYS or the NUMBER KEYPAD and press ENTER.
4) Press GO to begin the workout.
10
CHAPTER 4: CONSOLE OVERLAY AND WORKOUT DESCRIPTION
4.4 HEART RATE CONTROL WORKOUT OPERATION
Your Matrix T1xe-01 Treadmill offers a heart rate control workout
mode. The heart rate control workout mode allows the user to
program their desired heart rate zone and maximum allowable
incline and the treadmill will automatically adjust the incline based
upon the user's heart rate. The heart rate zone is calculated using
user must wear a telemetric heart rate monitor or continually hold
onto the contact heart rate grips for his workout.
1) Choose the Target Heart Rate workout by selecting the key next
to TARGET HEART RATE on the display.
2) Enter the user's age using the ARROW KEYS or the NUMBER
KEYPAD and press ENTER.
3) Enter the user's weight (the user's weight is used to calculate
the caloric expenditure value, providing an accurate weight helps to
ensure an accurate caloric expenditure rating for each user) using
the ARROW KEYS or the NUMBER KEYPAD and press ENTER.
4) Enter the user's target heart rate percentage using the ARROW
KEYS or the NUMBER KEYPAD and press ENTER.
5) Press GO to begin the workout.
4.5 GERKIN TEST WORKOUT OPERATION
Your Matrix T1xe-01 Treadmill offers a Gerkin Firefighter Protocol Fitness Test, The Gerkin Protocol was developed by Dr.. Richard Gerkin of
the Phoenix (Arizona) Fire Department. It is a sub-maximal graded treadmill evaluation used by many fire departments across the United States
to assess the physical condition of the firefighters. The test requires constant monitoring of the user's heart rate so the use of a telemetric chest
strap is highly encouraged. The workout operates as follows:
WARM UP:Thewarmupis3minuteslongandrunsat3.0mph(4.8kph)and0%incline.
STAGE 1: At the 3 minute mark, the treadmill will gradually increase speed to 4.5 mph (7.2 kph). The actual test begins at 4.5 mph (7.2 kph).
STAGE 2:Afteroneminute,thetreadmillinclinewillincreaseto2%.
STAGE 3: After one minute, the treadmill speed increases to 5.0 mph (8.0 kph).
STAGES 4 THROUGH 11:Aftereveryoddminutethetreadmillinclinewillincreaseby2%.Aftereveryevenminutethetreadmillspeedwill
evaluation remains at the stage where the target heart rate is exceeded, without any change to speed or incline. If the heart rate does not
return to or below the target heart rate, the evaluation ends and the final evaluation stage is recorded. If the heart rate returns to or below the
target heart rate, the program continues at the point where it would have been had the program not stabilized for 15 seconds.
TEST COMPLETION: The test is completed when user's heart rate exceeds the target for more than 15 seconds or when the user completes
1) Choose the Gerkin Test workout by pressing the key next to GERKIN on the display.
2) Enter the user's age using the ARROW KEYS or the NUMBER KEYPAD and press ENTER.
3) Select the user's gender using the ARROW KEYS or the NUMBER KEYPAD and press ENTER.
4) Enter the user's weight (the user's weight is used to calculate the caloric expenditure value, providing an accurate weight helps to ensure an
accurate caloric expenditure rating for each user) using the ARROW KEYS or the NUMBER KEYPAD and press ENTER.
5) Press GO to begin the workout.
11
CHAPTER 4: CONSOLE OVERLAY AND WORKOUT DESCRIPTION
4.5 GERKIN TEST WORKOUT OPERATION - CONTINUED
SUB MAXIMAL TREADMILL EVALUATION
CONVERSION TABLE
StageTimeConverted VO2max
11:0031.15
2.11:1532.55
2.21:3033.6
2.31:4534.65
2.42:0035.35
3.12:1537.45
3.22:3039.55
3.32:4541.3
3.43:0043.4
4.13:1544.1
4.23:3045.15
4.33:4546.2
4.44:0047.5
5.14:1548.6
5.24:3050
5.34:4551.4
5.45:0052.8
6.15:1553.9
6.25:3054.9
6.35:4556
6.46:0057
7.16:1557.7
7.26:3058.8
7.36:4560.2
7.47:0061.2
8.17:1562.3
8.27:3063.3
8.37:4564
8.48:0065
9.18:1566.5
9.28:3068.2
9.38:4569
9.49:0070.7
10.19:1572.1
10.29:3073.1
10.39:4573.8
10.410:0074.9
11.110:1576.3
11.210:3077.7
11.310:4579.1
11.411:0080
CARDIOVASCULAR FITNESS PERCENTILES
Males:VO2 max (ml/kg/min)
0-29 30-39 40-49 50-59
SUPERIOR
EXCEL-
LENT
GOOD
FAIR
POOR
VERY
POOR
Females:VO2 max (ml/kg/min)
SUPERIOR
EXCEL-
LENT
GOOD
FAIR
POOR
VERY
POOR
>58.8 >58.9 >55.4 >52.5
54.052.5 50.4 47.1
51.4 50.3 48.2 45.3
48.246.844.1 41.0
46.8 44.6 41.8 38.5
44.242.4 39.9 36.7
42.5 41.0 38.1 35.2
41.038.9 36.7 33.8
39.5 37.4 35.1 32.3
37.135.4 33.0 30.2
34.5 32.5 30.9 28.0
31.630.9 28.3 25.1
20-29 30-39 40-49 50-59
>53.0 >48.7 >46.8 >42.0
46.843.9 41.0 36.8
44.2 41.0 39.5 35.2
41.038.6 36.3 32.3
38.1 36.7 33.8 30.9
36.734.6 32.3 29.4
35.2 33.8 30.9 28.2
33.832.3 29.5 26.9
32.3 30.5 28.3 25.5
30.628.7 26.5 24.3
28.3 26.5 25.1 22.3
25.925.1 23.5 21.1
12
CHAPTER 5: MANAGER MODE
5.1 MANAGER MODE OVERVIEW
1) To enter Manager Mode, press "ENTER, 1, 0, 0, 1, ENTER" on the number keypad ON THE CONSOLE and Manager Mode will appear on
the display.
2) Manager Mode is divided into 6 tabs. They are About, Time, Speed, Defaults, Language, and TV.
3) Choose a tab by touching the button next to the desired tab.
4) Each of the tabs have options that will appear once you have chosen that particular tab.
5) Press the key next to HOME on the display or the EMERGENCY STOP to exit Manager Mode..
FIGURE A
13
5.2 MANAGER MODE - ABOUT TAB
CHAPTER 5: MANAGER MODE
MANAGER MODE
About
5.3 MANAGER MODE - TIME TAB
FUNCTION & DEFAULTSDESCRIPTIONSMODIFIED
Accumulated DistanceTotal distance showed in native units (miles
Accumulated TimeTotal time. Cannot be modified.
Software VersionsSoftware Version, for display only. Cannot be modified.
Serial NumberSerial number of the platform and console. Cannot be modified.
Out of Order
Default: OFF
or kilometers).
To show out of order on the console if repair
is needed.
Cannot be modified.
ON / OFF
MANAGER MODE
Time
FUNCTION & DEFAULTSDESCRIPTIONSMODIFIED
Maximum Time
Default: 60 Minutes
Default Time
Default: 30 Minutes
Pause Time
Default: 5 Minutes
14
This option enables fitness club managers
to set the maximum workout duration during
peak and non peak hours of club traffic.
This option controls the default program time. Maximum: Same as Max Time
This option controls the default pause time. Maximum: 10
Maximum: 99
Minimum: 5
Minimum: 5
Minimum: 1
5.4 MANAGER MODE - SPEED TAB
CHAPTER 5: MANAGER MODE
MANAGER MODE
Speed
5.5 MANAGER MODE - DEFAULTS TAB
FUNCTION & DEFAULTSDESCRIPTIONSMODIFIED
Maximum Speed
Default: 12 MPH / 19.2 KPH
Start Speed
Default: 0.5 MPH / 0.8 KPH
Controls the maximum speed for all
programs, Displayed in native units (MPH or
KPH).
Controls the starting speed for all programs.
Displayed in native units (MPH or KPH).
LanguageSelect default language. This option allows the user to select a flag for a
LANGUAGE
English
German
FLAGUNIT
Mile
Mile
KM
KM
KM
LANGUAGE
Spanish
Dutch
Italian
Japanese
specific language.
FLAGUNIT
KM
KM
KM
KM
KM
LANGUAGE
Chinese
Portuguese
French
N/A
FLAGUNIT
KM
KM
KM
KM
KM
16
5.7 MANAGER MODE - TV TAB
CHAPTER 5: MANAGER MODE
MANAGER MODE
TV
FUNCTION & DEFAULTSDESCRIPTIONSMODIFIED
Default Channel
Default: 1
Default Volume
Default: 1
Tuner Available
Default: Yes
SetupThis option sets the TV tuner function. Press
This option controls the default TV channel
on start up.
This option controls the default TV volume on
start up.
This option controls whether the TV function
is available.
the "-" key to enter this function.
Maximum: 99
Minimum: 1
Maximum: 17
Minimum: 1
YES or NO
17
CHAPTER 6: ENGINEERING MODE
6.1 ENGINEERING MODE OVERVIEW
The Engineering Mode allows the club owner to keep track of the technical settings and error history for the treadmill.
1) To enter Engineering Mode, press ENTER, 2, 0, 0, 1, ENTER on the number keypad ON THE CONSOLE. Engineering Mode will appear on
the display (Figure A).
2) Select the key next to the setting that needs to be changed, and follow the prompts to change.
3) Press the ENTER key once the desired setting is correct to save.
4) Press the key next to HOME on the display or press the EMERGENCY STOP key to return to normal operation.
6.2 ENGINEERING MODE - CALIBRATION TAB
FIGURE A
ENGINEERING MODE
Calibration
FUNCTION & DEFAULTSDESCRIPTIONSMODIFIED
Auto CalibrationThis option calibrates the elevation
Incline Minimum
Default: 4000
Incline Maximum
Default: 29000
18
parameters.
This option controls the minimum
elevation parameter.
This option controls the maximum
elevation parameter.