Vitrek V4 - Page 26

Vitrek V4 – Electrical Safety Tester USER MANUAL
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AH1 (Acceptor Handshake): The EST 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 EST becomes a listener when the controller sends its listen address
with the ATN (attention) line asserted. The power supply does not have
listen only capability.
SR1 (Service Request): The EST asserts the SRQ (Service request) line to notify the controller
when it requires service.
RL1 (Remote/Local): The EST responds to both the GTL (Go to Local) and LLO(Local Lock Out)
interface messages.
PP0 (Parallel Poll): The EST has no Parallel Poll interface function.
DC1 (Device Clear): The EST has a Device clear capability that returns the device to the power
on status.
DT0 (Device Trigger): The EST has no Device Trigger interface function.
C0 (Controller): The EST cannot control other devices.
Notes for GPIB installation:
When the V4 is set up with a GPIB system, please check the following things:
• Only a maximum of 15 devices can be connected to a single GPIB bus.
• Do not use more than 20m of cable to connect devices to a bus.
• Connect one device for every 2m of cable used.
• Each device on the bus needs a unique device address. No two devices can share the same device
address.
• Turn on at least two-thirds of the devices on the GPIB system while using the system.
• 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 V4 via
GPIB interface. The connections between power supply and computer are following:
1. Connect one end of a GPIB cable to the computer.
2. Connect the other end of the GPIB cable to the GPIB port on the V4.
3. Turn on the V4.
4. Turn on the computer.
The GPIB connection testing:
If you want to test whether the GPIB connection is working or not, you can send a GPIB command from
computer. For instance, the query command
*idn?
should return the Manufacturer, model number, serial number and firmware version in the following
format: