Tektronix TCP303, Safety Instructions, Page: 19 / 32

Installation
To utilize the full bandwidth capability of the TCPA300 and TCPA400 and
attached current probe, the oscilloscope bandwidth must be approximately
fi ve
times that of the current probe. For example, when using a TCP312A Current
Probe, the oscilloscope bandwidth must be at least 500 MHz. When using a
TCP305A Current Probe, the oscilloscope bandwidth must be at least 250 MHz.
After you have connected the ampli fi er to the oscilloscope, allow the equipment
to warm up to a stable temperature; usually 20 minutes is required.
NOTE.
To obtain accurate measurements, the input impedance of your
oscilloscope must be 50 Ω . Make sure your ampli fi er OUTPUT is connected to
an oscilloscope input using a 50 Ω BNC cable, and that the oscilloscope input is
set to 50 Ω impedance.
Power on the ampli fi er
1. Connect the power cord to the power input connector on the rear of the
ampli
fi er, and then connect the power cord to your local mains supply
(100 VAC to 240 VAC, 50 Hz to 400 Hz).
2. To allow for proper ventilation, place the rear panel of the ampli fi er at least
2 inches away from any obstructions. Set the ampli fi er on the bottom rubber
feet, and keep papers and other items away from the bottom of the ampli fi er
which could restrict air fl ow and cause overheating.
3. Press the ON/STANDBY button on the ampli fi er front panel. The ampli fi er
goes through a self-test and cycles the front-panel LEDs.
NOTE.
The ampli fi er stores the power state it is in when the power cord is
unplugged. If you do not put the ampli fi er into STANDBY mode before unplugging
it, the ampli fi er will power on immediately when you plug it in again.
4. Degauss the probe before taking measurements. For more information, refer
to the
TCPA300/400 Ampli fi ers and TCP300A/400 Series Current Probes
User Manual , Tektronix part number 077-1183-xx, for additional instructions
on degaussing and performing a functional check.
NOTE. The ampli fi er stores the power state it is in when the power cord is
unplugged. If you do not put the ampli fi er into STANDBY mode before unplugging
it, the ampli fi er will power on immediately when you plug it in again.
When you connect a probe to the ampli fi er, the ampli fi er uses detection circuitry
to indicate probe conditions such as noncompatible probe type and probe open.
Ampli fi ers and Current Probes Compliance and Safety Instructions 15