Instructions / Assembly

threshold estimate, the device prompts you to accept or
decline the estimate.
Getting Your FTP Estimate
Before you can get your functional threshold power (FTP)
estimate, you must pair a chest heart rate monitor and power
meter with your device (Pairing Your Wireless Sensors,
page 31), and you must get your VO2 max. estimate (Getting
Your VO2 Max. Estimate for Cycling, page 14).
The device uses your user profile information from the initial
setup and your VO2 max. estimate to estimate your FTP. The
device will automatically detect your FTP during rides at a
steady, high intensity with heart rate and power.
1
Select UP or DOWN to view the performance widget.
2
Select to scroll through the performance measurements.
Your FTP estimate appears as a value measured in watts per
kilogram, your power output in watts, and a position on the
color gauge.
Purple Superior
Blue Excellent
Green Good
Orange Fair
Red Untrained
For more information, see the appendix (FTP Ratings,
page 38).
NOTE: When a performance notification alerts you to a new
FTP, you can select Accept to save the new FTP, or Decline
to keep your current FTP (Turning Off Performance
Notifications, page 13).
Conducting an FTP Test
Before you can conduct a test to determine your functional
threshold power (FTP), you must pair a chest heart rate monitor
and a power meter with your device (Pairing Your Wireless
Sensors, page 31), and you must get your VO2 max. estimate
(Getting Your VO2 Max. Estimate for Cycling, page 14).
NOTE: The FTP test is a challenging workout that takes about
30 minutes to complete. Choose a practical and mostly flat route
that allows you to ride at a steadily increasing effort, similar to a
time trial.
1
From the watch face, select .
2
Select a cycling activity.
3
Hold MENU.
4
Select Training > FTP Guided Test.
5
Follow the on-screen instructions.
After you begin your ride, the device displays each step
duration, the target, and current power data. A message
appears when the test is complete.
6
After you complete the guided test, complete the cool down,
stop the timer, and save the activity.
Your FTP appears as a value measured in watts per
kilogram, your power output in watts, and a position on the
color gauge.
7
Select an option:
• Select Accept to save the new FTP.
• Select Decline to keep your current FTP.
Pulse Oximeter
The fēnix 5X Plus device has a wrist-based pulse oximeter to
gauge the saturation of oxygen in your blood. Knowing your
oxygen saturation can help you determine how your body is
acclimating to high altitudes for alpine sport and expedition.
When you view the pulse oximeter widget while you are not
moving, your device analyzes your oxygen saturation and your
elevation. The elevation profile helps indicate how your pulse
oximeter readings are changing, relative to your to elevation.
On the device, your pulse oximeter reading appears as an
oxygen saturation percentage and color on the graph. On your
Garmin Connect account, you can view additional details about
your pulse oximeter readings, including trends over multiple
days.
À
The oxygen saturation percentage scale.
Á
A graph of your average oxygen saturation readings for the last 24
hours.
Â
Your most recent oxygen saturation reading.
Ã
The elevation scale.
Ä
A graph of your elevation readings for the last 24 hours.
Viewing the Pulse Oximeter Widget
The widget displays your most recent blood oxygen saturation
percentage, a graph of your hourly average readings for the last
24 hours, and a graph of your elevation for the last 24 hours.
1
While you are sitting or inactive, select UP or DOWN to view
the pulse oximeter widget.
2
Remain stationary for up to 30 seconds.
NOTE: If you are too active for the watch to determine your
oxygen saturation, a message appears instead of a
percentage. You can check your oxygen saturation again
after several minutes of inactivity.
3
Select to view a graph of your pulse oximeter readings for
the last seven days.
Turning On All-Day Acclimation Mode
From the pulse oximeter widget, select > DOWN > OK.
The device automatically analyzes your oxygen saturation
throughout the day, when you are not moving.
NOTE: Turning on all-day acclimation mode decreases
battery life.
Turning On Manual Acclimation Mode
1
From the pulse oximeter widget, hold MENU.
2
Select Options > Acclimation > Manual.
The device analyzes your oxygen saturation when you view
the pulse oximeter widget.
Tips for Erratic Pulse Oximeter Data
If the pulse oximeter data is erratic or does not appear, you can
try these tips.
• Remain motionless while the device reads your blood oxygen
saturation.
• Wear the device above your wrist bone. The device should
be snug but comfortable.
• Hold the arm wearing the device at heart level while the
device reads your blood oxygen saturation.
• Clean and dry your arm before putting on the device.
• Avoid wearing sunscreen, lotion, and insect repellent under
the device.
• Avoid scratching the optical sensor on the back of the device.
16 Pulse Oximeter