Tektronix CMD 80, User Manual

Page: 359 / 672

Appendix D: Remote Control
CMD 80 Digital Radiocommunication Tester User Manual
D–3
Table D–1: Interface functions
Control Characters Interface Function
SH1 Source Handshake function, complete capability
AH1 Acceptor Handshake function, complete capability
L4 Listener function, complete capability, unaddress if MTA
T6 Talker function, complete capability, capability to relay to serial
poll, unaddress if MTA
SR1 Service Request function, complete capability
PP1 Parallel Poll function, complete capability
RL1 Remote/Local switchover function, complete capability
DC1 Device Clear function, complete capability
DT0 Device Trigger function, no Device Trigger
C0 Controller function, no controller function
Setting the Device Address
The device address can be set in the CONFIG menu using the GPIB/IEC
ADDRESS softkey. The address between 0 and 30 is entered using the numeric
keys and remains stored when the device is switched off. The tester is factory set
to address 1. The address is the decimal equivalent of bits DI01 to DI05 of the
Talker or Listener address.
Serial Interface
The tester is equipped with a serial interface (RS-232C) as standard equipment.
The 9-pin connector is located at the rear of the tester. A controller for remote
control can be connected through the interface. The connection is effected using
a null modem cable.
NOTE . For remote control via the serial interface, some controllers send
characters to the serial interface during booting. This causes the tester to switch
to the REMOTE state as soon as it receives these characters, since no explicit
addressing is possible with the serial remote control. If this occurs, you can
press the LOCAL key to switch from the REMOTE state to the LOCAL state.