Controls And Display; Front Panel - Rohde & Schwarz HAMEG HM8123 Benutzerhandbuch

Controls and display

2 Controls and
display

Front panel

POWER (Pushbutton)
1
Power switch, mains input connector on rear panel
GATE (LED)
2
The GATE LED will be on for the duration of the gate
time and synchronisation time, i.e. for the duration of
one complete measurement.
REMOTE (LED and pushbutton)
3
The REMOTE LED will be on if the instrument is under
control via the interface. By pushing the REMOTE but-
ton operation will be returned to manual.
Display (LCD)
4
Display of measurement results and additional
information
ESC (pushbutton)
5
Escape pushbutton (menu)
ENTER (pushbutton)
6
Enter pushbutton (menu)
SELECT (pushbutton)
7
Selects a menu or part thereof.
pushbuttons
8
These arrow pushbuttons are used to control the menu
and the parameters.
Rotating knob
9
Knob for entering parameters
GATE TIME (pushbutton)
10
Setting of gate time
LEVEL B (pushbutton)
11
Setting of channel B trigger level
LEVEL A (pushbutton)
12
Setting of channel A trigger level
1 : 10 pushbutton
13 16
Input attenuator, total attenuation 100 times.
1 2 3
32
Fig. 2.1: Frontpanel of the HM8123
20
4 5 6 7
31
DC (pushbutton)
14
Selects the coupling of the corresponding channel.
Button DC lit = DC coupling
Button DC dark = AC coupling
SLOPE (pushbutton)
15
This pushbutton selects the trigger slope. A lighted
pushbutton indicates triggering on the negative slope,
an unlighted pushbutton indicates triggering on the po-
sitive slope.
50 Ω (pushbutton)
17
This pushbutton connects an internal 50 Ω resistor to
the input in order to allow operation in 50 Ω systems.
LP 50 kHz (pushbutton)
18
This pusbuttons inserts a low pass filter in order to sup-
press hf signals from interfering with triggering from
low frequency signals.
TRIG (LED)
19 23
Indicate triggered operation
INPUT A, INPUT B (BNC connectors)
20 22
Input connectors for measuring signals DC to
200 MHz
AUTO TRIG (pushbutton)
21
Selects automatic triggering operation indicated by the
pushbutton lighting up.
INPUT C (SMA connector)
24
Input for measuring signals 100 MHz to 3 GHz
RESET / V (pushbutton)
25
Button with two functions:
1 Pressing this button will stop any measurement,
erase the display and start a new measurement.
2 Setting the trigger level with the numerical keys, the
entered value will be accepted with the unit Volts (V).
TRIG / GHz/s (pushbutton)
26
Button with two functions:
1 Pressing this button will start a measurement in
ARMED mode.
2 Setting the gate time with the numerical keys, the en-
tered value will be accepted with the unit seconds (s).
HOLD / mV (pushbutton)
27
Button with two functions:
8 9 10 11 12
30 29 28 27 26 25 24
13 16
14 15 17 18
23 22 21 20 19