4
6
DT0 (Device Trigger):
The 4176 has no Device Trigger interface function.
C0 (Controller):
The 4176 can not control other devices.
6.2.2 Notes for GPIB installation
When the 4176 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.
6.2.3 Computer’s Connection
A personal computer with a GPIB card is the essential facilities in order to operate the
4176 via GPIB interface.
The connections between power supply 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 4176.
III.
Turn on the 4176.
IV.
Turn on the computer.
6.2.4 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:
VALHALLA SCIENTIFIC 4176,1.01G,0"
If you do not receive a proper response from the 4176, please check if the power is on,
the GPIB address is correct, and all cable connections are active.
