4
Änderungen vorbehalten
1. Safety Hints
STOP
Attention!
Fitting or exchanging of an interface must not be
made unless the oscilloscope or the spectrum
analyzer is switched off and not connected to line
(mains).
STOP
Attention!
During operation the interface opening must be
closed.
STOP
Attention!
All interface connections are galvanically connected
to the scope / to the spectrum analyzer.
STOP
Measurement at high potentials is prohibited and en-
dangers the scope / spectrum analyzer, the interface
and all equipment connected to the interface.
If the safety rules are disregarded, any damage to HAMEG In-
struments GmbH products will void the warranty. Consequently
HAMEG Instruments GmbH will not take any responsibility for
damage to people or equipment of other make.
2. Interface Description
HO720 is a DUAL Interface that can be used alternatively as a
USB 2.0 or as a RS-232 Interface in connection with the HAMEG
CombiScopes HM1008 and HM1508 as well as the HAMEG
spectrum analyzer HM5530 for data transfer and oscilloscope/
spectrum analyzer control. Only one function (USB or RS-232)
– not both at the same time – can be activated (see item 5 “Inter-
face Selection”). Both interfaces enable serial data transfer.
2.1 USB
The interface is equipped with a Type A USB female connector.
For direct connection with a host controller or an indirect con-
nection via a USB hub, a USB cable is required, equipped with
Type B male connector one end and a Type A male connector
at the other.
2.2 RS-232
The RS-232 connector and its specifi cation comply with the
interface HO710 that is described in the oscilloscope / spectrum
analyzer manual.
3. Firmware
Oscilloscope
3.1 It is absolutely necessary to check the oscilloscope fi rmware
version before fi tting the Interface HO720. The fi rmware
version already on the scope is displayed after switching
on if “Quick Start” is off. The “Quick Start” function can
be changed after pressing the SETTINGS pushbutton and
calling “Misc.”.
3.2 If the fi rmware version is 03.000-yy.yyy or higher, continue
the interface fi tting as described under item 4 (Interface
Fitting Instruction). In the case of fi rmware versions below
03.000-yy.yyy, HO720 will not be recognised and a fi rmware
update is required as described under item 3.3.
3.3 In case of a fi rmware version below 03.000-yy.yyy, please
download the current fi rmware at www.hameg.com from the
Internet and update the oscilloscope. The fi rmware can be
found and downloaded under: Products
>
Oscilloscopes
>
(oscilloscope type)
>
Software/Firmware (below the oscil-
loscope picture)
>
Firmware_HMxxx_Vxxx.zip.
After receiving the current fi rmware and its installation instruc-
tion, the fi rmware installation must be done via the RS-232
interface HO710. If the current fi rmware is installed, future
updates can be made by aid of HO720 too.
Spectrum analyzer
With spectrum analyzers the interface will be recognized by
each fi rmware version.
Type A
Type B
G e n e r a l h i n t s
