Instructions

EXTERNAL CONTROL

109

EXT ADD - AC+DC-ADD and AC-ADD mode

Overview &

Concept

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

Overview

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.

Diagram &

Concept

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 76 for

operation steps.

Output

Waveform

External Sync

Signal (TTL)

Note

The limit frequency range of synchronous TTL signal is

40Hz ~ 2kHz.