1-2
IM 701310-17E
1.2 USB Interface Functions and Specifications
USB Interface Functions
Reception Function
You can specify the same settings as those specified by front panel key operations.
Receives output requests for measured and computed data, setup parameters of the
panel, and error codes.
Transmission Function
Outputs measured and computed data.
Outputs panel setup parameters and the status byte.
Outputs error codes that have occurred.
USB Interface Specifications
Electrical and mechanical specifications: Conforms to USB Rev. 2.0
Connector:
Type B connector (receptacle)
Number of ports:
1
Power supply:
Self-powered
PC system supported: PC running Windows 2000 or Windows XP with a standard USB
port (a separate device driver is needed to connect to a PC).
Data Rate
The response time when outputting waveform data is shown below as a reference.
Model:
701313 main unit
Controller:
PC (Pentium4 3.4 GHz, USB2.0) and OS (Windows XP Professional SP1)
Language used: Visual C++
Number of Data Points
Word Data
ASCII Data
2500
Approx. 51 ms
Approx. 0.469 s
125000
Approx. 193 ms
Approx. 22.766 s
1250000
Approx. 1606 ms
Approx. 224.890 s
2500000
Approx. 3188 ms
Approx. 451.297 s
6250000
Approx. 7841 ms
Approx. 1127.625 s
Switching between Remote and Local Modes
When Switching from Local to Remote Mode
If the DL9000 receives a “:COMMunicate:REMote ON” command from the PC when it is
in the local mode, it switches to the remote mode.
• REMOTE is displayed in the center of the upper section of the screen.
• All keys except the
CLEAR
key are disabled.
• Settings entered in local mode are retained even when the DL9000 switches to remote
mode.
When Switching from Remote to Local Mode
Pressing
CLEAR
in remote mode puts the instrument in local mode. However, this is
void when the DL9000 has received a “:COMMunicate:LOCKout ON” command from
the PC (local lockout condition). When the DL9000 receives a “:COMMunicate:REMote
OFF” command from the PC, the DL9000 switches to the local mode regardless of the
local lock condition.
• REMOTE indication in the center of the upper section of the screen disappears.
• Key operations are enabled.
• Settings entered in remote mode are retained even when the DL9000 switches to
local mode.
Note
The USB interface cannot be used simultaneously with another interface (GP-IB or Ethernet
interface).