User`s guide

Chapter 2 Front Panel Operations RIGOL
M300 User’s Guide
2-85
USB storage device when a scan finishes.
 Row Limit
If “64K” is selected, the file stored in the USB storage device can not exceeds
64K rows. Each time when the data in the scan data file exceeds 64k rows, a
new .csv file will be created automatically by the instrument to store the
following data.
 File Separator
Select “;”, “Tab” or “,” as the separator of the scan data file stored in the USB
storage device.
 Import
If “Yes” is selected when an USB storage device is inserted, the instrument
searches and lists the .blcfg files in the root directory of the USB storage device.
Select the desired file and press the Import softkey to import it. .blcfg file
stores the measurement configuration. After it is imported, the scan list settings
(including trigger count, trigger mode, interval for auto trigger mode and trigger
edge type for external trigger) and the channel configurations (including
measurement configuration, scalling configuration, alarm configuration and
advanced configuration) are overwritted.
To Set RS232 Parameters
You can convert the [RS-232/Alarms/Ext Trig] interface at the rear panel to two
9-pin interfaces using the Mixed Interface Convert Cable (accessory). Wherein, one
is a 9-pin male interface used as a standard RS232 interface (the definitions of the
pins are as shown in the table below). The 9-pin female interface is used for alarm
output, external trigger signal input, etc.
RS232 Interface
Connect the RS232 interface with the PC or data terminal equipment (DTE) device
using a RS232 cable and set the interface parameters (such as the baud rate and
parity) to match the PC or terminal device. At this point, you can control the
instrument remotely. The measurement result of the instrument can be output to
6
7
4
5
2
3
1
8
9
Pin
Name
Definition
1
DCD
Data Carrier Detect
2
RXD
Received Data
3
TXD
Transmitted Data
4
DTR
Data Terminal Ready
5
SGND
Signal Ground
6
DSR
Data Set Ready
7
RTS
Request To Send
8
CTS
Clear To Send
9
RI
Ring Indicator