GW Instek GOM-802 Programming Manual User Manual
Page 2
DC MILLI-OHM METER
PROGRAMMER MANUAL
⎯ 2 ⎯
2. CONNECTING THE METER VIA GPIB INTERFACE
The GPIB interface capabilities:
The GPIB interface of the Meter corresponds to the standard of
IEEE488.1-1987, IEEE488.2-1992 and SCPI-1994. The GPIB interface
functions are listed as follows:
SH1(Source Handshake)
: The Meter can transmit multilane
messages across the GPIB.
AH1(Acceptor Handshake) : The Meter can receive multilane messages
across the GPIB.
T6(Talker)
: Talker interface function includes basic
talker, serial poll, and unaddress if MLA
capabilities, without talk only mode
function.
L4 (Listener)
: The Meter becomes a listener when the
controller sends its listen address with the
ATN (attention) line asserted. The METER
does not have listen only capability.
SR1
(Service
Request)
: The Meter asserts the SRQ (Service
request) line to notify the controller when
it requires service.
RL1 (Remote/Local)
: The Meter responds to both the GTL(Go to
Local) and LLO(Local Lock Out) interface
messages.
PP0 (Parallel Poll)
: The Meter has no Parallel Poll interface
function.
DC1 (Device Clear)
: The Meter has Device clear capability to
return the device to power on status.
DT0 (Device Trigger)
: The Meter has no Device Trigger interface
function.
C0 (Controller)
: The Meter can not control other devices.
DC MILLI-OHM METER
PROGRAMMER MANUAL
⎯ 3 ⎯
Notes for GPIB installation
When the Meter is set up with a GPIB system, please check the following
things:
z
Only a maximum of 15 devices can be connected to a single GPIB
bus.
z
Do not use more than 20m of cable to connect devices to a bus.
z
Connect one device for every 2m of cable used.
z
Each device on the bus needs a unique device address. No two
devices can share the same device address.
z
Turn on at least two-thirds of the devices on the GPIB system while
using the system.
z
Do not use loop or parallel structure for the topology of GPIB
system.
Computer’s Connection
A personal computer with a GPIB card is the essential facilities in order
to operate the Meter via GPIB interface.
The connections between Meter and computer are following:
I.
Connect one end of a GPIB cable to the computer.
II.
Connect the other end of the GPIB cable to the GPIB port on
the Meter.
III.
Turn on the Meter.
IV.
Turn on the computer.