User Manual 8
HDG2000B 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 "
6. Counter In
BNC connector with 500
Ω nominal input impedance. It is used to accept an external signal to
be measured by the counter.
7. Counter button
Press
Counter
to turn the counter on or off. When the counter is turned on, the backlight of
the key is illuminated and the left indicator flickers. If the counter interface is currently
displayed, press this key again to disable counter function; if the screen currently displays
interfaces other than the counter interface, press this key again to switch to counter interface
(refer to the introductions in
Counter
).
8. CH1: Sync/Mod/Trig Output
BNC connector with 50Ω
nominal output impedance and 1K
Ω
nominal input impedance.
Its function is determined by the current working mode of CH1.
Mod:
If modulation mode is enabled for CH1, and external modulation source is used, this
connector accepts an external modulation signal.
Trig:
If CH1 is in sweep or burst mode and external trigger source is used, this connector
accepts an external trigger signal (users can set the polarity of the signal).
Sync:
When the sync output of CH1 is enabled, this connector outputs the sync signal
corresponding to the current settings of CH1 (refer to the introduction in
Sync
).
9. CH2: Mod/ Trig/ Sync Output
The same as CH1: Mod/ Trig/ Sync Output.
10. CH1 Output
BNC
connector with 50Ω nominal output impedance.
When
1Output
is enabled (the backlight turns on), this connector output waveform according
to the current configuration of CH1.
11. CH2 Output
BNC connector with 50Ω nominal output impedance.
When
2Output
is enabled (the backlight turns on), this connector output waveform according
to the current configuration of CH2.
12. Data Output
: Enable or disable the output of word generator.
13. Channel ON/OFF
: Enable or disable the output of CH1 or CH2.
14. Numeric Keyboard
It is used to input parameters and consists of numbers (0 to 9), decimal point (.), operators (+/-)
and buttons ("Enter", "Cancel" and "BASP"). Note that if a negative is required, please input