Following this screen there may be a warning screen if the battery voltage is becoming too low. If
message reads
"BATTERY LOW! REPLACE SOON!"
, the battery should be replaced prior to
additional use. The message
"BATTERY MUST BE REPLACED!"
(as shown below) indicates that the
battery voltage is too low to use at all. If the battery is not replaced at this time the MR-20 may stop
operating during a training session. (Since the battery may also go low during a long session, this
message may appear later during use as opposed to start-up.)
NOTE:
If the MR-20 has been turned on and does not work properly, try replacing the battery with a
new one. Verify that battery has correct orientation as well as good connectivity (snug fit) to battery
terminals of the unit.
The
internal memory
of the MR-20
does not
require the battery
. Even if the battery is completely
discharged or removed, the saved training session data will be preserved, as will all
LOCKED
mode
parameters.
M
M
R
R
-
-
2
2
0
0
O
O
v
v
e
e
r
r
v
v
i
i
e
e
w
w
o
o
f
f
F
F
e
e
a
a
t
t
u
u
r
r
e
e
s
s
a
a
n
n
d
d
O
O
p
p
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r
r
a
a
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:
:
(MR-20 Operation "in a nutshell")
•
To Set an A Channel Goal press the A key Repeatedly.
To Change Goal Press the Up and Down Arrows.
•
To Set B Channel Goal Press the B key Repeatedly.
To Change Goal Press the Up and Down Arrows.
•
To Access Special Functions Menu, Press the A and B keys at the same time.
(for about 4 seconds)
This will accomplish the following five things:
1.
Review Data
(Push A, A, A) Then use up/down arrows to select session.
2.
Clear Data
(Push A, A, B, A)
3.
Work/Rest mode
(Push B, A, A, A) then use up/down arrows
to select Work time, Rest time, and number of sessions.
Session automatically begins.
4.
Lock/Unlock
(Push B, B, A, (Then A or B)
5.
Download
(Push A, B)
Notes:
•
Turn MR-20 off to save the session. (Session must be at least 1 minute
if in continuous mode).
•
When using Work/Rest, set goal first
, then Work/Rest, because session automatically begins.
(if goal is desired).
Use this Overview in conjunction with the flow chart on the following page for a quick reference.