ASR-2000 Series User Manual 
22 
External Signal 
Input Connector 
Synchronizing the output 
frequency with this external input 
signal for SYNC or outputting the 
amplified external signal with this 
external input signal for EXT and 
ADD. 
USB port for controlling the ASR-
2000 remotely 
The Ethernet port is used for 
remote control 
The optional RS232C connector 
for controlling the ASR-2000 
remotely (Factory Installed 
Optional 1) 
GPIB Connector 
(25 pins Micro-D) 
The optional GPIB connector for 
controlling the ASR-2000 remotely 
(Factory Installed Optional 1)