HAMEG HO880 User Manual

IEEE-488-Interface

HO880

Manual

English

Important hints

Important hints

The test instruments of the HAMEG Series
HM8100 have all been designed to permit their
use in automated testing environments. In order
to connect them to an IEEE488 bus, the interface
HO88 (option) is required. Series HM8100 instru­ments equipped with the IEEE488 bus interface
comply with the stipulations of the IEC-625-1 and
IEEE-488 standards. If the HO880 interface is
ordered together with the a HM 81 .. instrument,
it is installed within it at the factory. The HO880
interface is also available as a separate option for
retrofi tting purposes at a later time.

Security

This instrument has been designed and tested
in accor dance with IEC Publication 1010-1, Sa­fety require ments for electrical equipment for
measurement, control, and laboratory use. It
corresponds as well to the the CENELEC regu­lations EN 61010-1. All case and chassis parts
are connected to the safety earth conductor.
Corresponding to Safety Class 1 regulations
(three-conductor AC power cable).

Do not disconnect the safety ground either inside
or outside of the instrument!

all defects are detected. Following the burn-in,
each instrument is tested for function and quality,
the specifi cations are checked in all operating
modes; the test gear is calibrated to national
standards.

The warranty standards applicable are those of
the country in which the instrument was sold.
Reclamations should be directed to the dealer.

Only valid in EU countries

In order to speed reclamations customers in EU
countries may also contact HAMEG directly. Also,
after the warranty expired, the HAMEG service
will be at your disposal for any repairs.

Return material authorization (RMA):

Prior to returning an instrument to HAMEG ask
for a RMA number either by internet (http://www.
hameg.com) or fax. If you do not have an original
shipping carton, you may obtain one by calling the
HAMEG service dept ([phone]) or by
sending an email to [e-mail].

The istrument must be disconnected and secured
against unintentional operation if there is any
suggestion that safe operation is not possible.

This may occur:

– if the instrument shows visible damage,
– if the instrument has loose parts.
– if the instrument does not function,
– after long storage under unfavourable

circumstances (e.g. outdoors or in moist
environments).

When removing or replacing the metal case, the
instrument must be completely disconnected
from the mains supply.

Warranty and Repair

HAMEG instruments are subjected to a strict
quality control. Prior to leaving the factory,
each instrument is burnt-in for 10 hours. By
intermittent operation during this period almost

2

Subject to change without notice

Insert the Interface

An HM8100 instrument can be retrofi tted by the
user with the HO880 interface, but we recom­mend to do it ex factory. The fi rst step is to remove
the instrument enclosure. To do so, unscrew the
6 screws on the rear panel of the instrument and
take off the plastic back cover; the enclosure can
then be pulled off towards the back.

Disconnect the cable, which connects the instru­ment with the built-in interface, and attach it to
the HO880 interface.

Depending on the instrument’s connector use the
micromatch connector

. Remove the built-in interface. According to
the instrument, the jumpers
in one of the following ways:

or the MICS connector

have to be placed

Jumper position 1

Instruments: HM8112-3 and HM7044

Jumper position 2

Instruments: HM8115-2, HM8118, HM8123,
HM8131-2, HM8134-3, HM8135, HM8143 and
HM8150

The interface card is attached using the 2 sup­plied self-tapping screws. The enclosure is then
slid back on. When doing so make sure that the
edges of the metal enclosure slide exactly into
the grooves of the plastic covers on the front
and back. After the rear plastic cover has been
replaced and fastened, the unit is again ready
for operation.

Address selection

You can use any terminal program to send the
command, we suggest the Windows Hyper­terminal. A installation and user guide for the
Windows Hyperterminal can be downloaded
from the HAMEG Website: www.hameg.com/hy­perterminal .

Address selection, Commands

Adress selection

All instruments connected to an IEEE-488 bus
must receive unique device addresses.
The address can be chosen by the rotary switch

next to the IEEE-488 bus interface connector.
The address space includes the addresses from
0x1 to 0x1F (1-31 dec.).
It is divided into two ranges. The lower range
0x1 – 0xF (1 – 15) is seleted if the jumper
not placed. If the jumper
address range 0x10 - 0x1F (16-31) is selected.
You have to add 0xF (16) to the value selected
at the rotary switch if the upper address range
is chosen.

is placed, the upper

Commands

To control the instrument please use the com­mands included in its manual.

is

All data and signal lines are electrically isolated
from ground. When the IEEE-488 cable is uncon­nected, there is no electrically conductive path
to the instru-ment chassis or the grounded wire
of the power supply!

Speciality of HM8134 / HM8135

If you wish to change or retrofi t the remote in­terface of the HM8134 and/or HM8135, you need
to program the HM8134/8135 in order to activate
the new interface. Please send the following com­mand over the extra built in RS232 interface:

To activate a IEEE/GPIB (HO880) please send:
‚813xcom2default:2‘

In order to deactivate all second interfaces please
send: ‚813xcom2default:0‘

Subject to change without notice

3

Oscilloscopes

Spectrum Analyzer

Power Supplies

Modular System

Series 8000

Programmable Instruments

Series 8100

authorized dealer

www.hameg.com

Subject to change without notice HAMEG Instruments GmbH
46-0880-0010 / 23072009 Industriestraße 6
© HAMEG Instruments GmbH D-63533 Mainhausen
A Rohde & Schwarz Company Tel [phone]

DQS-Certifi cation: DIN EN ISO 9001:2000 Fax [phone]
Reg.-Nr.: DE-071040 QM [e-mail]