DMTA
‐
10007
‐
01EN
[U8778365],
Rev. B,
June
2010
Basic
Operation
37
•
Zoom
:
Sets
the
display
range
to
begin
at
the
start
position
of
the
selected
gate,
and
to
stop
at
the
end
position
of
the
selected
gate
(gate
start
+
gate
width).
Pressing
the
Zoom
[P
<n>
]
parameter
key
repeatedly
toggles
the
zoom
on
and
off.
•
Start
:
Adjusts
the
start
position
of
the
selected
gate.
•
Width
:
Adjusts
the
width
of
the
selected
gate.
•
Level
:
Adjusts
the
screen
height
of
the
selected
gate
(from
3 %
to
95 %).
•
Alarm
:
Sets
the
alarm
condition
of
the
selected
gate
(
Off
,
Positive
,
Negative
,
Min
Depth
)
•
Min
Depth
:
Visible
only
when
the
Alarm
parameter
is
set
to
Min
Depth
.
Adjusts
the
threshold
in
time
‐
of
‐
flight
units
that
triggers
a
Min
Depth
alarm
condition.
•
Status
:
Turns
the
gate
on
or
off
(effects
measurements,
alarms,
and
visibility
of
gate
on
screen).
2.3.3
Gate Setup
The
Gate
Setup
menu
allows
more
advanced
settings
for
each
gate
to
be
adjusted
prior
to
inspection.
These
settings
are
visible
above
the
[P
<n>
]
parameter
keys.
The
following
gate
settings
are
available
in
the
Gate
Setup
menu:
•
G1
Mode
:
Sets
the
measurement
trigger
mode
of
gate 1
(
Peak
,
1stPeak
,
Edge
)
•
G1
RF
:
Sets
the
polarity
of
the
gate
1
when
the
instrument
is
operating
in
RF
rectification
(
Dual
,
Positive
,
Negative
)
•
G1
%Amp
:
Used
only
in
Edge
mode.
Sets
the
measurement
trigger
for
the
% amplitude
digital
measurement
of
gate 1
when
in
Edge
detection
mode
(
High
Peak
,
1stPeak
).
•
G2
Mode/G2
RF/G2
%Amp
:
Same
settings
as
above,
but
for
gate 2
only.
•
G2
Tracks
:
Toggles
tracking
mode
of
gate 2
with
respect
to
gate 1
on
or
off.
Tracking
ON
is
considered
true
echo
‐
to
‐
echo
measurement
mode.
Gate
measurement
modes,
selected
by
G1
Mode
or
G2
Mode
,
determine
which
gated
echo
or
echo
parameters
triggers
a
digital
measurement.
•
Peak
:
Acquires
measurement
readings
based
on
the
highest
peak
within
the
gated
region
(does
not
have
to
cross
the
gate
threshold)
[see
Summary of Contents for EPOCH 600
Page 1: ...DMTA 10007 01EN U8778365 Revision B June 2010 EPOCH 600 Basic Operation Manual ...
Page 6: ...DMTA 10007 01EN U8778365 Rev B June 2010 vi List of Abbreviations ...
Page 18: ...DMTA 10007 01EN U8778365 Rev B June 2010 12 Important Information Please Read Before Use ...
Page 32: ...DMTA 10007 01EN U8778365 Rev B June 2010 26 Chapter 1 ...
Page 56: ...DMTA 10007 01EN U8778365 Rev B June 2010 50 Appendix ...
Page 60: ...DMTA 10007 01EN U8778365 Rev B June 2010 54 List of Tables ...
