GM 140
page 6
of 12
File: GM140_r0eng - October 2003 - Technical note: GM 140
GM 140
File: GM140_r0eng - October 2003 - Technical note: GM 140
page 7
of 12
0 1
3
45
67
8
9
2
0 1 2
3
45
67
8
9
t
on
FREQ
0 2
3
45
67
8
9
1
0 1 2
3
45
67
8
9
t
on
FREQ
0 1 2
3
45
67
8
9
0 2
3
45
67
8
9
1
t
on
FREQ
0 1 2
3
45
67
8
9
0 1
3
45
67
8
9
2
t
on
FREQ
0 1 2
3
45
67
8
9
0 1 2
3
56
7
8
9
4
t
on
FREQ
Microwaves emission mode selection
You can select two different modes of microwaves
emission: continuous or pulsed mode.
In pulsed mode you can drive pulses by:
- an external signal generator or
- FREQ and
t
on
switches on front panel added with two
analog signals (internal generator).
Continuous:
Pin 5
CONN#3
CW/PULSE MODE
OFF
Pulsed, with external generator
Pin 5
CONN#3
CW/PULSE MODE
ON
Pin 9-10
CONN#3
PULSE PATTERN
PWM: Amplitude 24 Vdc
t
on
=0.1÷10ms
t
off
=1÷100ms
Max Duty Cycle=20%
(with hysteresis)
Pulsed, with internal generator
Pin 5
CONN#3
CW/PULSE MODE
ON
Pin 9-21
CONN#3
Pins connected (shortcircuited)
Pin 7-8
CONN#3
SET VALUE FOR FREQUENCY
See table below
0÷10Vdc / 9÷310Hz
Select FREQ=2
0÷10Vdc / 230÷4500Hz
Select FREQ=1
Pin 20-8
CONN#3
SET VALUE FOR
t
on
See table below
0÷10Vdc / 60÷300
µ
S
Select
t
on
=1
0÷10Vdc / 220
µ
S÷1.6mS
Select
t
on
=2
0÷10Vdc / 1.2÷9.5mS
Select
t
on
=4
Frequency selection: 0÷10Vdc PIN 7, 8
Frequency: 9Hz÷310Hz
Frequency: 230Hz÷4500Hz
Different selection not allowed
Time selection: 0÷10Vdc PIN 20, 8
Time: 60µs÷300µs
Time: 220µs÷1,6ms
Time: 1,2ms÷9,5ms
Different selection not allowed