GW Instek GFG-3015 - Manual (Page 36)

p. 32 GFG-3015
DEG/%
DEG/%
PHASE
TRIG ON
Hz/Vpp
INT/EXT
RATE
SWP CF
SYM
INT/EXT
GATE
INT/EXT
GATE
Press in sequence.
Press in sequence.
Press in sequence.
Press .
The GATE Function will perform on output terminal. Please see Figure (4).
In addition, you can use and the Rotate Knob to modify the
value of Trigger signal Symmetry and set the Open Gate Time you need.
Note: 1. It won’t make any change on execution and result by taking different step
sequence.
2. Use suitable external signal to set the GATE function you need.
6.15 Setup of External Counter
The GFG-3015 provides a high performance external frequency counter and
with 6 digits counter and up to 150MHz high frequency range with high
resolution.
Press button, the EXT and one of the Gate time indicated
LEDs will light up, also, the GATE will be flashing according to the Gate time
of Counter (In Counter Functions LEDs area). Now, the external counter is in
enabling status.
When the is pressed, the Gate time LEDs will be according to the
cycle of 0.01S, 0.1S, 1S, and 10S to display. The Different Gate time will
provide different resolution of counter. So users can use the key to choose
whatever the resolution they need.
The detailed relation among the Test frequency, the Gate time, the State
LEDs and minimum resolution is as below:
Input Test
Frequency Gate Time Display Value State of LEDs Resolution
0.01 Sec 1.0000 Hz 100μHz 1Hz
0.1 Sec 1.00000 Hz 10μHz
0
1
6 0
0 0
◄ ►
SHIFT
Figure (3) Figure (4)