1、 Overview:

HM340 is a small signal generator that can generate up to 100KHz frequency, duty cycle, and phase adjustable pulse signals; Generate servo control signals; Measurement frequency;

This module is easy to use, inputting frequency data through button operations and immediately updating the output frequency.

2、 Product application:

● Signal generator;

● Instrument calibration;

● DC motor control;

● Measurement frequency;

3、 Technical parameter table:

Number Project Parameters Unit Remarks

1 pulse signal range: 1-100000 Hz                        Pulse signal

2 pulse duty cycle range: 0-100.0% duty cycle

3 pulse phase difference range 0-360 degrees Phase difference between the first and second signals

4 pulse signal amplitude 5 VDC                       Maximum amplitude 5.0Vp (output amplitude unchanged)

5. Measurement frequency range: 1-1000K HZ

6 Measurement frequency resolution 1 HZ

7. Measurement frequency voltage range ± 0.7~10 VDC                        It is directly coupled

8 servo signal frequency 100 Hz

9. Servo signal pulse width 500-2500 us

10 working voltage 7-12 VDC

11. Working current<50 mA

13 Size 57 * 45 * 20 mm                        Length X Width X Height

4、 Interface Description and Related Operations

P4 interface (power supply)

VDD: Positive pole of power supply (7-12V)

GND: Negative pole of power supply

P3 interface

FIN: Measure the frequency input terminal.

P2:   The second pulse signal output.

P1:   The first pulse signal output.

GND: Negative pole of power supply.

5、 Key Description

FUN:    (Select the operation bit for setting data) or (Long press to save the set parameter function).

UP:     Previous page.

DOWN:   Next page.

ADD:    Self adding key.

SUB:    Self subtraction key.

6、 Interface display and operation instructions:

6.1 Setting the pulse signal frequency

Interface display font:

First line "1." Frequency    “

The second line reads "* 1 1000Hz"

Key operation:

FUN: function key; (Select the operation bit for setting data) or (Long press to save the set parameter function)

ADD: Self bonding;

SUB: Self reduction key;

6.2. Setting the pulse signal duty cycle

Interface display font:

The first line "2." Duty Cycle   “

The second line reads "* 0.1 50.0%"

Key operation:

FUN: function key; (Select the operation bit for setting data) or (Long press to save the set parameter function)

ADD: Self bonding;

SUB: Self reduction key;

6.3. Set the phase difference between the first and second pulse signals (the first signal serves as a reference)

Interface display font:

First line "3." Phase      “

The second line "10C"

Key operation:

FUN: function key; (Select the operation bit for setting data) or (Long press to save the set parameter function)

ADD: Self bonding;

SUB: Self reduction key;

6.4. Output servo pulse signal

Interface display font:

The first line reads "4. Servo Control"

The second line reads "* 1 500us"

Key operation:

FUN: function key; (Select the operation bit for setting data) or (Long press to save the set parameter function)

ADD: Self bonding;

SUB: Self reduction key;

6.5 Measurement frequency

Interface display font:

The first line reads "5. Frequency 1MHZ"

The second line "OFF 0Hz"

Key operation:

(Start/Stop) Frequency measurement button: (FUN: function key)