- 3 -
2.1 Power Switch
It turns on or off the meter.
2.2. Auxiliary Keys
Key Description
SELECT
Selects measurement mode.
When using the meter to output square waveform, press
SELECT
key to change duty
cycle by 1%.
RANGE
Selects measurement range. The meter is default at auto range mode.
Press this key for at least 2 seconds, the meter returns to auto range.
SET
Press this key to set upper limit value, lower limit value and Ref value.
When
the
SET
key is engaged, the
RANGE
key is used as a moving up key (
▲
), the
2nd VIEW
key as a moving down key (
▼
), the
MAX/MIN
as a moving left key (
◄
),
and
REL
key as a moving right key (
►
).
In this case, the
RANGE
,
2nd VIEW
,
MAX/MIN
and
REL
keys’ original functions are
disabled.
◄▲▼►
keys can be used to enter and adjust the setting values.
MAX/MIN
Press this key to enter the dynamic record mode, with maximum record period of 36
hours.
In the dynamic record mode, the meter automatically records the maximum value
(MAX), minimum value (MIN), difference value (MAX-MIN) and calculates the average
value (AVG) of all readings. Press this key to cycle values of MAX, MIN, MAX-MIN,
AVG on the secondary display.
TIMER /
RS232
TIMER
TIMER function is enabled when measurements can be set with REL and MAX/MIN
measuring modes.
Press
TIMER
key to start the secondary display for counting time. Press
TIMER
key
again to turn off the counting time display.
When the secondary display is displaying counting time, press key
SELECT
to enter
Beeper setup for setting up a timer for beeper. Then, press key
RANGE
(
▲
),
MIX/MIN
(
◄
),
REL
(
►
),
2nd VIEW
(
▼
) to input the time. Next press key
TIMER
to validate the
new time data. When the counting time exceeds the pre-set time, the beeper sounds.
In the above two modes, press key
HOLD
to exit timer function and turn off secondary
display, but the preset time remains unchanged.
The time is displayed in the format of “0.00.00” on the secondary display. The max.
counting time is 9h:59m:59s
RS232
Press this key for at least 2 seconds, the RS232 remote control is enabled for PC
control and communication with other instruments. The LCD displays “RS232’
Auto power off function is disabled in RS232 programmable mode.
Press this key for at least 2 seconds again to exit remote control mode and return to
local operation.
HOLD
Press this key, the meter enters auto data hold mode and “A-H” is displayed on the
LCD. The data hold mode allows users to hold the displayed value while the analog
bar graph shows the current reading.
In data hold mode, press this key to circle Peak+ hold mode (PH+) and Peak- hold
mode (PH-).
Press this key for at least 2 seconds, the meter exits HOLD mode and return to normal
mode.
