EXTERNAL CONTROL
113
EXT ADD - AC+DC-ADD and AC-ADD mode
Select AC+DC-ADD or AC-ADD mode to add the
external signal source signal that includes
magnification to the internal signal then power
output on the rear panel. The impedance of input is
1MΩ, whilst the frequency range of input is from
DC to 999.9 Hz.
EXT Sync - AC+DC-Sync and AC-Sync mode
When AC+DC-Sync or AC-Sync mode is selected,
the externally synchronized oscillation function
embedded in the ASR-2000 synchronizes the
output frequency, specifically, to the frequency of
external synchronization TTL signal. It is not
allowed to set the synchronization phase
difference and the output frequency is able to be
synchronized to frequency from 40 to 999.9 Hz.
For SIG option, choose either EXT (signal sync) or
LINE (line sync) for external sync signal source. It
is noted that synchronous is with power source
frequency when LINE is opted. See page 79 for
operation steps.
0
1
Output
Waveform
External Sync
Signal (TTL)
The limit frequency range of synchronous TTL signal is
40Hz ~ 2kHz.
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