Aeroflex ProLock 2201, Руководство по началу работы, Страница: 41 / 60

Chapter 3 Operation
Connecting the 2201 ProLock
2201 ProLock 21
RS-232
This 9-pin sub-D connector on the rear panel of the 2201
ProLock can be used to control the instrument remotely via a
serial interface (RS-232). The command set and the responses
conform to the SCPI standard and are explained in the user guide.
The RS-232 connector can also be used to load and store results
and settings and to update the operating software. See the user
guide for more details.
In order to connect the 2201 ProLock with a controlling PC over
RS-232, use a null modem (PC to PC) cable.
R
EF
I
N
The R
EF
I
N
plug can be found on the rear panel. It can be used
as an input for an external time base (reference clock). If an
external 10 MHz clock is connected, the instrument automatically
uses this clock as a frequency reference, and displays a symbol
on the LCD. See the user guide for more details.
CAUTION
The input for the external trigger signal is designed for TTL input
levels only. Higher levels at this port can damage the instrument.