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4
C H A P T E R
Reading the GPIB Address
Before operating the LDX-36000
remotely, its GPIB address must
be known. Simply press the Local
button in the GPIB section of the
front panel shown in Figure 4.3.
The instrument will display the
address in the primary display.
The factory default address is
"Addr 01".
Changing the GPIB Address
Every device on the GPIB bus must have a unique address. If it is necessary to
change the address, press and hold the Local button and rotate the Adjust knob
until the desired address value is displayed. When the Local button is released,
the new GPIB address will be stored in nonvolatile RAM. The allowable address
range is 1 - 30 for primary GPIB addressing. It is not recommended that zero be
used for an address as that is typically reserved for the GPIB controller installed in
the computer. Extended GPIB addressing is not implemented.
Changing Operation from Local to Remote
Sending a command over the GPIB bus automatically puts the instrument in
Remote mode. The Remote indicator identifies when the controller is in remote
operation mode. When the instrument is in Remote mode, all front panel controls
are disabled except for the Local button. Pressing the Local button returns the
instrument to Local control mode unless a Local Lockout state has been activated
by the low level GPIB command LLO from the host computer. Local Lockout
disables all front panel controls, including the Local button, until this condition is
changed by the host computer. In this condition, the Remote indicator will flash at
1 Hz to indicate the complete disabling of the front panel. The Talk/Listen LED will
flash when communications are occurring over the GPIB bus.
For more information on low level interface commands such as LLO, refer to the
IEEE488.1 specification.
50
LDX-36000 Series
R E M O T E O P E R A T I O N
Basic GPIB Concepts
Figure 4.3 GPIB Local Button
- Quick Links:
- Table 6.2 Error Code Classifications
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