28
Controls and display
Fig. 2.1: Front panel of the HM8143
2 Controls and
display
Front panel
1
POWER (button)
Mains connector at rear panel
2
REMOTE (LED)
The REMOTE LED is lit when the instrument is opera-
ted via interface.
3
13
CV (green LED)
If the CV LED is lit, the HM8143 is in constant voltage
mode.
4
12
CC (red LED)
If the CC LED is lit, the HM8143 is in constant current
mode.
5
11
Digital display (2 x 4 digit)
Display of nominal or measurement values of the out-
put voltage and the output current.
6
10
VOLTAGE (pushbutton and LED)
Setting of output voltage via frontpanel. By pushing the
button the setting function is active.
7
CURRENT (pushbutton and LED)
Setting of current limit via frontpanel. By pushing the
button the setting function is active.
8
Rotary knob
Parameter setting of voltage and current values.
1
2
4
5
6
7
8
9 10
3
11
12
14
15
16
13
17
18
19
9
CURRENT (pushbutton and LED)
Setting of current limit via frontpanel. By pushing the
button the setting function is active.
Beep off: While turning on the instrument keep the
CURRENT button depressed.
14
TRACKING (pushbutton and LED)
Activation of the tracking function of the 30 V outputs
15
FUSE (pushbutton and LED)
Button for activation of the electronic fuse
16
18
0-30 V / 2 A (Adjustable)
4mm banana sockets for SOURCE and sense
17
5 V / 2 A (Fixed)
4 mm banana sockets
19
OUTPUT (pushbutton and LED)
ON/OFF key for all channels
Rear panel
20
MODULATION R / L (BNC sockets)
Analog modulation inputs for the 30 V outputs, 0-10 V,
max. 50 kHz
21
USB/RS-232 Interface (HO820)
Options: HO880, IEEE-488 (GPIB)
22
TRIGGER IN/OUT (BNC socket)
Input/output for start and trigger signals to/from the
HM8143, TTL level
23
Voltage selector (115 V / 230 V)
24
Power receptacle with line fuse