TH2523 Series Operation Manual
Ver1.2
41
Figure 6-1 shows that the serial interface pin definition of this instrument is different from that
of 9 pin connector used in computer. User can purchase the serial interface cable from our
company.
RS232 interface characterizes with a baud rate ranging from 9600 to 115200, no parity, 8-bit
data bit, 1-bit stop bit.
The instrument commands comply with the SCPI standard. When a command string is
transmitted to the instrument, it is required to send LF (hexadecimal: 0AH) as the terminating
character. Each time the maximum receivable number of SPCI command string is 2kB.
For result data formats transmitted to a PC from the instrument, see Commands Reference.
6.2
GPIB Bus (option)
IEEE488 (GPIB) is an international bus interface standard used on intelligent instruments.
IEEE is the English abbreviation of Institute of Electrical and Electronics Engineers, and 488
is the standard number. Through this interface, TH2523 can communicate with PC or others
intelligent equipments and meanwhile can make up automatic test system with the other test
equipments. Up to 15 equipments can be connected on a same bus. TH2523 applies
IEEE488.2 and the interface plate can be inserted in any one of the three expansion slots
Control command system is open so that user can use the PC operation interface provided by
TH2523 or take measurements by the control command system. The control command system
supports most functions of the instrument, that is to say, user can execute almost all operations
on PC. Thus remote control to the instrument is realized.
When configuring a GPIB system, the following restrictions must be adhered to.
1
．
The total length of cable in one bus system must be less than or equal to two meters
times the number of devices connected on the bus (the GPIB controller counts as one
device) and the total length of cable must not exceed 20 meters.
2
．
A maximum of 15 devices can be connected on one bus system.
3
．
There are no restrictions on how the cables are connected together. However, it is
recommended that no more than four piggyback connectors be stacked together on
any one device.
