Starter Kit Instruction Manual Maintenance 43
8.4 Calibaration pro cedures8.4.1 TPG128 calibration
Generalities
The present section describes procedure to be car-
ried out for particular calibration of the TPG128.
Before beginning
[1] Switch the instrument OFF.
[2] Remove the cover (1).
[3] Switch the instrument ON.
! WARNING ! Keep in mind that dur-
ing the calibration, the instrument is alive
(powered on)
Needed material
•1 set of screwdriver.
•1 oscilloscope.
•1 voltmeter.
Procedure calibration
The generator should be calibrated as followed:
[1] Verify the +5 V supply.
[2] During the first test, set all potentiometers
and adjustable capacitors to their medium val-
ues.
[3] Adjust to the potentiometer 50 ns adj
(3) in order to obtain a 500 ns long pulse on
TP2 (2).
[4] Connect an oscilloscope allowing the mea-
surement of the signal’s period on the output
Trig out.
TPG128−TTLPulseGenerator
OFF
ON
Power
0.2to2.2ms
0.5to10.5ms
5to105ms
0to200ns
−−−−−−−−−Period−−−−−−−−−−Duration−
GateINT
rigOUTOut1Out2
50ohms50ohms
1
50ohms
max60mA
+12V
0V
Fig.33: Removing the top cover
2
3
Fig.34: TPG128 main board