Rohde & Schwarz Hameg HM8150, User Manual

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23
Introduction
Fig. 2.2: Rear panel of the HMF2550 / HMF2525
21
22 23 25 24
18
GATED (Button)
Activation of the gated mode. The button is illuminated,
if the function is active.
19 TRIG‘d (Button)
Activation of the triggered mode. The button is illumi-
nated, if the function is active.
20
GATE / TRIG INPUT (BNC socket)
Input for trigger and gate signals
Rear panel
21 INTERFACE
USB/RS-232 interface (HO820),
optional: IEEE-488 GPIB (HO880)
22
TRIG. OUTPUT (BNC socket)
Trigger output, TTL level
23
MODULATION INPUT (BNC socket)
Input for amplitude modulation, max. ±30 V, 20 kH
24 SWEEP OUT (BNC socket)
Sawtooth output (sweep mode)
25
Mains input connector
3 Introduction
3.1 First time operation
Before using the instrument for the first time, please check
the following:
❙The connection to the mains is either by plugging into a
socket with safety ground terminal or via an isolation
transformer of protection class II.
❙No visible damage to the instrument.
❙No visible damage to the line cord.
❙No loose parts floating around in the instrument.
3.2 Switch-on
When the HM8150 is turned on, it automatically per-
forms a selftest routine and displays the baud rate (e.g.
9600 Baud), the device type and the firmware version (e.g.
HM8150 1.04). After switch-on the HM8150 has the same
configuration as switched off. All parameter settings are
saved in a non-volatile memory and are read back after
switch-on. The output, the sweep, the offset and the invert
function are deactivated by default.
Factory settings
Wave form: Sinus
Frequency: 1.0000 kHz
Amplitude: 10 V
pp
Pulse width: 50.0 µs
Offset: –1.0 V
Sweep time: 0.1 s
Sweep start frequency: 2.0000 kHz
Sweep stop frequency: 10.000 kHz
Operating mode:
continuous
Baud rate: 9600
The factory settings can be restored by the following
procedure:
❙Switch off the instrument.
❙Push and hold the x10 button
6
and switch on the
instrument. Hold the button until you hear several beeps.