Hantek HDG3000BC Series User Manual page 15

3. CH3 Output Connector
BNC connector with 50Ω nominal output impedance.
When CH3 output is turned on (press [CH1/2/3] to select the CH3 window display, then press
CH3 softkey and switch to "ON"), the corresponding connector outputs the configured
waveform.
4. 10 MHz Reference In/Out (10MHz In/Out)
BNC connector with 50Ω nominal output impedance and 5KΩ nominal input impedance. The
function of this connector is determined by the type of clock used by the generator.
HDG3000B(C) can use internal or external clock (refer to the introduction in

When internal clock source is used, the connector (used as 10MHz Out) can output
10MHz clock signal generated by the internal crystal oscillator of the generator.

When external clock source is used, the connector (used as 10MHz In) accepts a 10MHz
external clock signal.

This connector is usually used to synchronize multiple instruments (refer to the
introduction in
5. Counter (0~3.3V, external signal input)
BNC connector with 500Ω nominal input impedance. It is used to accept an external signal to
be measured by the counter.
6. USB DEVICE Interface
7. Safety Lock Hole
8. AC Power Socket
User Manual 10
"Clock Source").
"Clock Source").