S p e z i a l e l e k t r o n i k G m b H
iseg Spezialelektronik GmbH
Email: [email protected]
Tel ++ 49 (0) 351 / 26 996 - 0
Bautzner Landstr. 23
http://www.iseg-hv.de
Fax ++ 49 (0) 351 / 26 996 - 21
D - 01454 Radeberg / Rossendorf
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5.4 IEEE-488 Interface (GPIB)
Attention:
Turn off the device with mains switch POWER before connecting/disconnecting
the interface cable.
IEEE-488 Interface
The IEEE-488 bus interface was implemented with a NEC 7210 compatible IEEE controller. The fol-
lowing interface functions according to IEC 625 are available:
SH1
Source Handshake:
all functions (no polling)
AH1
Acceptor Handshake:
all functions (no polling)
T6
Talker:
standard equipment
L4
Listener:
standard equipment
To connect the device to the IEEE bus, a Micro-D25 male connector is located at the device rear. An
adapter cable with a 24 pin connector following IEEE-488.2 standard is available optional.
For remote control, the IEEE interface must be selected in Menu “F09 Set Interfce“ by choosing
“IEEE“. The IEEE address (0…30) can be selected in Menu “F11 Addr IEEE“. The device ships from
the factory with a IEEE address of 17.
When receiving control commands over IEEE, the device switches to REMOTE state and the yellow
LED “REMOTE” is lighting.
By pushing the LOCAL button, remote control is suspended and the device switches to LOCAL state.
If the device is in REMOTE state and high voltage is on, pushing ON/OFF turns off the HV generation
and the device switches to LOCAL state.
In both cases, when receiving new commands via interface, it switches back to REMOTE state.
Programming
The command transfer works with ASCII code. Commands are terminated by <CR><LF> ($0D $0A
or 13 10). Alternatively, the control line EOI (End or Identify) can be set together with the command’s
last character. On input side, no leading zeros are needed. Output is fixed format without leading
zero.
A minimum time delay of 5 ms between two IEEE commands is needed.
