NF FRA5022, Инструкция по эксплуатации

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5.1 Preparations Before Use
FRA5022
5-3
5.1.4 USB Device Identification
FRA5022
is automatically identified by connecting it with UBS to the computer on which
USB-TMC class driver is installed. FRA5022 is identified internally by the following
parameters.
⚫
Vendor ID: 3402 (0x0D4A) Indicates NF Corporation
Decimal (hexadecimal) notation
⚫
Product ID: 15 (0x000F) Indicates FRA5022
⚫
Serial number: Device serial number This number is a unique number.
It is possible to check the serial number from the system menu screen.
Items: Serial Number
5.1.5 GPIB Address Setting
With GPIB the system devices are identified by a device- specific address. Each device
must be setup with a unique GPIB address. The GPIB address for
FRA5022
can be set via
the system menu screen.
Items: INTERFACE address
Value range: 0 - 30
5.1.6 Necessary Precautions When Using GPIB
⚫
Manipulate the GPIB connector only when all the devices connected to the bus
have their power turned off.
⚫
When using GPIB, turn the power on for all the devices connected to the bus.
⚫
The number of devices connectable to the bus from GPIB, including the controller,
is 15.
Cable length has the following restrictions.
・
total cable length
≦（
2m

number of devices or 20m, whichever is shorter)
・
length for 1 cable
≦
4m
⚫
Each device must be setup with a unique GPIB address. Devices connected to the
bus can be damaged if they are identified with the same address.
5.2 Remote State Display and Cancellation
FRA5022
can be operated in the remote state or local state.
In the local state, all the panel operations are enabled. Normally, the device is switched to
the remote state when it is operated via GPIB or USB. Once switched to the remote state,
the REMOTE lamp on the front panel illuminates, indicating that all the panel operations
are disabled except for swtching the device back to the local state.
Except when the device is in the local lockout state, pressing the BS/LOCAL key switches
the device back to the local state from the remote state. Setting the device to the local
lockout state via the controller allow you to prevent the device from being operated
inadvertently. When in the local lockout state, switching the device back to the local state
is possible only by sending a message from the controller but not by pressisng BS/LOCAL
key. Actually, this message involves operations of sending GTL command or resetting REN
line to False. Note that, when the GPIB cable is disconnected, the device returns to the
local state because REN line is reset to False. Also, when the USB cable is disconnected,
the device is reset to the local state.