Rohde & Schwarz R&S NRP - Interfaces; Iec;Ieee Bus Interface; Bus Lines; Characteristics of the Interface

Remote Control - Commands R&S NRP
1144.1400.12 6.124 E-3
Interfaces
IEC/IEEE Bus Interface
The R&S NRP is fitted with an IEC/IEEE bus interface as standard. The connector in line with IEEE 488
is located on the rear panel. A controller can be connected to this interface for remote control. A
shielded cable is used for the connection.
Characteristics of the Interface
• 8-bit parallel data transmission
• Bidirectional data transmission
• Three-wire handshake
• Data transmission rate up to 350 Kbyte/s
• Connection of up to 15 devices
• Max. length of connecting cables: 15 m (length of single cable: 2 m)
• Wired OR links when several devices are connected in parallel.
DIO1
DIO2
DIO3
DIO4
EOI
DAV
NRFD
NDAC
IFC
SRQ
ATN
Shield
DIO7RENGND(6)logic GND GND(10) GND(8)
DIO5DIO6DIO8GND(11) GND(9) GND(7)
24 13
1415
16
1718
1920
212223
112
11 10 9
8765432
Fig. 6-14: Pin assignment of IEC/IEEE-bus interface
Bus Lines
1. Data bus with 8 lines DIO 1 to DIO 8
Transmission is bit-parallel and byte-serial in ASCII/ISO code. DIO 1 is the least-significant and
DIO 8 the most-significant bit.
2. Control bus with 5 lines
IFC
(Interface Clear)
Active LOW resets the interfaces of connected devices to the default state.