User Manual

9
Connections
Front Panel Connections
Input A
For frequencies in the range 0.001Hz (DC coupled) to >125MHz. Input impedance selectable
between 1MΩ//25pF and 50Ω.
Input B
For frequencies in the range <80MHz to >3GHz. Input impedance 50Ω (AC coupled).
Maximum allowable input 1Vrms.
Maximum input with respect to earth ground
is 30Vdc or 30Vrms 50/60Hz.
Input C
For frequencies in the range <2GHz to >6GHz. Input impedance 50Ω (250kΩ at DC).
Maximum allowable input 4Vrms.
Maximum input with respect to earth ground
is 30Vdc or 30Vrms 50/60Hz.
EXT REF IN
For a 10MHz signal from an external reference standard only. Input impedance >100kΩ, AC
coupled.
Maximum allowable input TTL, 5V
pp
CMOS or 2Vrms sinewave.
Maximum input with respect to earth ground is 30Vdc or 30Vrms 50/60Hz.
Rear Panel Connections
DC IN
DC power to operate and/or recharge the instrument is connected via the 1.3mm power socket.
Use ONLY the AC adaptor/charger provided by TTi with the instrument. Use of any other
power source will void the warranty.
USB
The USB port accepts a standard USB cable. The Windows plug-and-play functions should
automatically recognise that the instrument has been connected. The instrument will
automatically be powered by the USB host if the AC adaptor/charger is not connected. USB
power can be used without the USB connection being used for remote control.
The instrument can only be powered via its USB port if the connection is properly enumerated; it
is therefore not possible to use adaptors which only provide DC power through a USB connector.
Maximum allowable input 1Vrms (1:1 attenuation) or 4Vrms (5:1 attenuation) for
1MΩ//25pF input; 1Vrms above 300kHz for 50Ω input (AC coupled).
Maximum input with respect to earth ground is 30Vdc or 30Vrms 50/60Hz.