Terminology; Ports And Modes; Ieee-488- (Gpib) Port; Hardware Configuration - Hameg Instruments Ho79-6 Handbuch

In order to obtain service under this warranty, Customers must contact and notify the
distributor who has sold the product. Description of the Interface HO79-6inhalt „Description
of the Interface HO79-6"
The interface HO79-6 can be connected to all HAMEG Analog-/Digital Oscilloscopes,
which are supplied with a 9 pole D-Sub female connector. A description of the electrical
characteristics of this serial (RS-232) interface is included in the oscilloscope manual. In
digital mode the HO79-6 enables the output (documentation) and the reception (reference
signals) of signal data. In addition the instrument can be controlled via the interface in
analog and digital mode.

Terminology

The generic term "documentation" describes the generation of a hardcopy. The
documentation can be made by use of a printer or a plotter and includes the signal display,
the graticule, the measurement parameters and the headline. The term "data transfer"
contains commands, queries and signal data.

1. Ports and Modes

The interface is supplied with 3 ports.inhalt „The interface is supplied with 3 ports."

1.1 IEEE-488- (GPIB) Port

This bidirectional port enables data transfer with an external IEEE-488 controller (e.g.
PC) required, but also can be used for documentation (e.g. plotter). In IEEE-488 mode
data are transferred in a byte-serial manner.
The connections of the IEEE-488 port can be seen in the appendix. If an IEC 625 cable
is used, an adaptor for IEEE-488 is required.
The IEEE-488 cable must be double shielded and not exceed the maximum permissible
length. The HAMEG cables HZ72L and HZ72S meet those requirements.

1.1.1 Hardware configuration

The IEEE-488 port can be used for documentation purposes, if switch SW1 is active
(not overwritten by software configuration) and set to 0, 1, 2 or 3.
Data transfer can be performed independent from the hardware configuration.

1.1.2 Software configuration

The setting of switch SW1 can be overwritten by a suitable command received by the
IEEE-488 or RS-232 port (data transfer). Subsequently the mechanical setting of SW1
becomes inactive until the oscilloscope is switched off for approx. 10 seconds.

1.2 Device mode

In connection with an IEEE-488 controller (e.g. PC supplied with HO80-2) the interface
and consequently the oscilloscope can be integrated in automated test system
according to the IEEE-488 standard as one of several devices. Under these conditions
switch SW2 is used for device mode and address setting. Device mode is present if an
address from 1 (hex) to E (hex) is chosen. Under this address the interface receives
commands from the controller.
1.2.1 Starting documentation
Documentation via the IEEE-488 can be started after the corresponding command has
been received by the interface IEEE-488 or RS-232 port.
Änderungen vorbehalten / Subject to change without notice
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