4 calibaration procedures, 1 tpg128 calibration, Starter kit instruction manual maintenance 43 – Quantum Instruments Cascade Laser Starter Kit User Manual
Page 44: Fig.33: removing the top cover
Starter Kit Instruction Manual
Maintenance
43
8.4
Calibaration procedures
8.4.1
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.
TPG
128
−TT
L P
ulse
Gen
era
tor
OF
F
ON
Pow
er
0.2
to
2.2
m
s
0.5
to
10.5
m
s
5 to
105
m
s
0 to
200
ns
−−−
− −
−−−
−Pe
riod
−−−
−−−
−−−
−Du
ratio
n −
Gate
IN
Trig
OU
T
Out
1
Out
2
50
ohm
s
50
ohm
s
1
50
ohm
s
ma
x 6
0m
A
+12
V
0 V
Fig.33: Removing the top cover
2
3
Fig.34: TPG128 main board