30
Subject to change without notice
C o n t r o l s a n d d i s p l a y
Controls and elements
Front panel
1
POWER
(Pushbutton)
Line switch, turns the instrument ON and OFF
2
DISPLAY
(LCD) – Display of measurement results and units,
ranges, frequencies, level, equivalent circuit, functions,
parameters, instrument states and messages.
MENU
3
SELECT
(Pushbutton)
Opening of the menu with the submenus SETUP, CORR, SYST
and BIN (with optional Binning Interface HO118 installed)
4
ENTER
(Pushbutton)
Enters an input value to the HM8118.
5
ESC
(Pushbutton)
6
Rotary knob
(Knob/Pushbutton)
Selection and adjustment of functions and parameters
7
(Pushbuttons) – Pushbuttons for selection and
adjustment of functions and parameters
SET
8
FREQ
(Pushbutton) – Setting of the test signal frequency
with the rotary knob
6
or the .
9
LEVEL
(Pushbutton) – Sets the test signal level.
10
BIAS
(Pushbutton) – Sets the bias voltage or current (de-
pending on the measurement function)
ZERO
11
OPEN
(Pushbutton) – Executes an OPEN correction.
12
SHORT
(Pushbutton) – Executes a SHORT correction.
13
LOAD
(Pushbutton) – Executes an LOAD correction.
MODE
14
AUTO/MODE
(Pushbutton) – Activates the automatic selec-
tion of the equivalent circuit model of the component being
measured (series, parallel).
15
SER
(Pushbutton) – Activates the series equivalent circuit
model of the component being measured.
16
PAR
(Pushbutton) – Activates the parallel equivalent circuit
model of the component being measured.
RANGE
17
AUTO/HOLD/
(Pushbutton) – Toggles the measurement
range mode between Auto and Hold
18
UP
(Pushbutton) – Switching to a higher range.
19
DOWN
(Pushbutton) – Switching to a lower range.
Sockets
20
L CUR
(BNC socket) – Low Current; signal output for series
measurements (signal generator)
21
L POT
(BNC socket) – Low Potential; signal input for parallel
measurement (voltage measurements)
22
H POT
(BNC socket) – High Potential; signal input / output
for parallel measurements (measurement bridge)
23
H CUR
(BNC socket) – High Current; signal input for series
measurements (current measurements)
24
BIAS MODE/ESC
(Pushbutton)
Selectes the bias mode from internal or external; leaving
the menu without acceptance of the value entered.
25
TRIG MODE/ENTER
(Pushbutton)
Selects the trigger mode from internal, manual, or external;
enters an input value and terminates the key entry for the
current input function.
1
2
4
3
5
6
7
9
8 10
12 11 13
15 14 16
18 17 19
22
21
20
24
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