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SECTTON
Performance Verificaiion
1.6.6.
DC Voltage Accuracy
1. Connect the function synthesizer to a DMM as
shown in Figure 1-2. Turn on both instruments.
2. Restore factory defaults on the Model 3930A by
pressing SHIFT. PRST.
3.
Program the DC function, OHz, 2.OOmV amplitude,
with +15V offset.
4. Set the DMM to measure DC volts with autoranging,
and verify that the voltage reading is within the lim-
its specified in Table 1-7.
5. Change the offset setting of the synthesizer accord-
ing to Table 1-7, and verify the subsequent voltage
readings.
Table l-7.
Limits for DC Voltage Accuracy
Function
DC
Offset
I
Allowable Reading
(18'C
to 28'C)
I
+15v
-15v
i-5v
-5v
+1.5v
-1.5v
+14.842V to +15.158V
-14.842V
to -15.158V
+4.942V
to +5.058V
-4.942V
to -5.058V
+1.477v
to
+1.523v
-1.477v
to
-1.523v
1.6.7
DC Level (Square) and DC Offset
Error (Sine)
1. Connect the function synthesizer to a DMM as
shown in Figure 1-2. Turn on both instruments.
2. Restore factory defaults on the Model 3930A by
pressing SHIFT PRST.
3.
Program a 7.49Vp-p square wave, gated mode, Ext
1 trigger source, and +90" of phase.
4. Set the DMM to measure DC volts with autoranging,
and verify that the voltage reading is within the lim-
its specified in Table l-8.
5. Change the function, amplitude,
mode, trigger
source, and phase settings of the synthesizer accord-
ing to Table 1-8 and verify the voltage readings.
1.6.8
Rise and Fall Times
1. Connect the function synthesizer to a timer/counter
as shown in Figure l-1. Turn on both instruments.
2. Restore factory defaults on the Model 393014 by
pressing SHIFT PRST.
3.
Program a lOOkHI square wave (FXD50) of 3OVp-p.
4. Set the timer/counter
to measure rise/fall times of
Channel A and verify that the rise time is within the
limit specified in Table 1-9. Then change the slope to
measure the fall time and verify the reading.
5. Change the amplitude setting of the synthesizer ac-
cording to Table 1-9 and verify the remaining rise/
fall times.
Table l-8.
Limits for DC Level (Square) and DC Offset Ekror (Sine)
Trigger
Allowable Reading
Function
Amplitude
Mode
Source
Phase
(18'C to 28'C)
Square
7.49vp-p
Gate
ExtiL
+90°
3.715v
to 3.774v
-90°
-3.715v to -3.774v
Sine
3ovp-p
Gate
Extk
0'
i68mV
3vp-p.
fl4mV
l-9
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