89
Preparations
Remote control operation
The optional Remote Controller (DA-20RC1) allows recording start/stop
control from a remote location. The controller features simple construction
with only a start/stop switch and an operation status indicator. The cable is
to be connected to the Remote Controller connector on the DA-21.
The Remote Controller allows for example centralized control of a measure-
ment system including other devices, with the DA-21 used to record data
under a given set of conditions. Because the Remote Controller is designed
to be operative also when the key lock feature is enabled, the DA-21 can be
protected from inadvertent operation.
Remote Controller connector
Remote Controller
Operation status
indicator
Ext. Trig.
Remote Controller
[START/STOP]
switch
DC IN 5-20V
USB
Sync.
Voice
Input
Monitor
Out
Tacho
Output
Input
1
2
3
4
The fi rst push of the [START/STOP] switch on the Remote Controller starts
recording. When the switch is pushed while recording is in progress, record-
ing stops. The operation status indicator provides the information listed in
the following table.
Status indicator
Operation
Flashing red
Recording
Flashing green
Trigger standby
Lit in red (1 second or more)
Overload has occurred
Off
Other condition
When an overload condition continues, no distinction is made with regard
to whether it is before or after recording start. However, recording under
permanent overload conditions is a problem. Adjust the input range setting
to prevent overload.
Summary of Contents for DA-21
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