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User's Manual
"Linear") and output signal of the output port. When CH1 key or CH2 key is disabled, the indicator light will be
extinguished, the info bar will display "OFF" and turn off the output port.
Channel 2
6．
Output interface of CH2.
Channel 1
7.
Output interface of CH1.
8. External Digital Modulation or Frequency Meter Interface or Sync Input Interface
In ASK, FSK and PSK signal modulation, when the modulation source is selected externally, the modulation
signal is input through the external digital modulation interface, and the corresponding output amplitude,
frequency and phase are determined by the signal level of the external digital modulation interface. When the
trigger source of the pulse string is selected to be external, a TTL pulse with specified polarity is received
through the external digital modulation interface, which can start scanning or output the pulse string with
specified number of cycles. When the pulse string mode is gated, the gating signal is input through the external
digital modulation interface. When using the frequency meter function, the signal (compatible with TTL level) is
input through this interface.
9. Menu Operating Soft Key
Select or view the contents of the labels (located at the bottom of the function screen) corresponding to the
soft key labels, and set the parameters with the numeric keypad or multifunction knobs or arrow keys.
10. Power Supply Switch
Press the power supply switch to turn on the instrument, press it again to turn it off.
11. USB Interface
USB interface is used for connecting with external USB storage device.
Notes
The channel output interface has overvoltage protective function, it will be generated when the following
condition is met.
The amplitude of the instrument is larger than 250 mVpp, input voltage is larger than ︱± 12.5V︱, frequency
is less than 10 kHz.
The amplitude of the instrument is less than 250 mVpp, input voltage is larger than ︱± 2.5V︱, frequency is
less than 10 kHz.
When the overvoltage protective function is enabled, the channel automatically disconnects the output.
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