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e. CHECK-that the DEFLECTION ERROR
%
readout
display is within the display tolerance listed in Table 4-3.
Table 4-3
100 V dc RANGE DEFLECTION ERROR
%
RESOLUTION TOLERANCES
Voltmeter
Display
Reading
Tolerance
108.5 V
7.7% to 7.9% LOW lamp lit
107.3 V
6.6% to 7.0% LOW lamp lit
106.5 V
5.9% to 6.3% LOW lamp lit
105.6 V
5.1% to 5.5% LOW lamp lit
104.6 V
4.2% to 4.6% LOW lamp lit
103.2 V
2.9% to 3.3% LOW lamp lit
100.0 V
0.0% to 0.2% LOW or HIGH
lamp lit
96.9 V
30% to 3.4% HIGH lamp lit
95.6 V
4.4% to 4.8% HIGH lamp lit
94.7 V
5.4% to 5.8% HIGH lamp lit
93.9 V
6.3% to 6.7% HIGH lamp lit
93.2 V
7.1% to 7.5% HIGH lamp lit
92.8 V
7.7% to 7.9% HIGH lamp lit
f. Set the AMPLITUDE control to 10.
g. CHECK-that the DEFLECTION ERROR
%
readout
display is within 0.1% as listed in Table 4-4.
Table 4-4
10 V dc RANGE DEFLECTION ERROR
%
RESOLUTION TOLERANCES
Voltmeter
Display
Reading
Tolerance
10.81 V
7.3% to 7.7% LOW lamp lit
10.56 V
5.1% to 5.5% LOW lamp
lit
10.00 V
0.0% to 0.2% HIGH or LOW
lamp lit
9.47 V
5.4% to 5.8% HIGH lamp
lit
9.30 V
7.3% to 7.7% HIGH lamp lit
h. Press in and turn-off the VARIABLE (OUT) control.
@
Calibration Procedure-PG 506 (SN 8040000
&
up)
Performance Check
6. Check Standard Amplitude Voltages (into 50 0
load)
a. Set the precision volt/ohmmeter to measure 5 V dc.
b. Connect the precision
500
termination to the
AMPL OUTPUT HIGH or STD
connector.
c.
Connect the preciSion coaxial
cable
from the ter
mination to the precision volt/ohmmeter input.
NOTE
The Standard Amplitude output voltage accuracy
(operating
into
a
50 0 load)
is
highly dependent on
the total load resistance
.
The total load consists of
the coaxial cable resistance, all contact resistance,
and the termination accuracy. Total load resistance
error must not exceed
0.
1%.
d.
CHECK-that
the
voltage
readings
for
the
AMPLITUDE
settings
are within the limits listed in Table
4-5.
Table 4-5
STANDARD AMPLITUDE INTO A
500 LOAD
AMPLITUDE
Voltage
Setting
Reading
Limits
10
5V
4.9875 V to
5.0125 V
5
2.5 V
2.49375 V to
2.50625 V
2
1 V
0.9975 V to
1.0025 V
1
0.5 V
0.498749 V to
0.50125 V
.5
0.25 V
0.249374 V to
0.250626 V
.2
0.1 V
0.099874 V to
0.100126 V
e.
Remove all connections.
f.
Turn off the power module and remove the PG 506.
g. Remove the PG 506 side cover to gai n access to the
internal
DC-Pulse switch
(S660).
Pull the rear end
of
the
side cover outward from the instrument side
(the
cover
snaps
into
place)
.
h. Set
the
DC-Pulse switch
(S660)
to Pulse
(down).
4-5
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