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SECTION 1
Performance Verificafion
1.6.8
DC Level (Square) and DC Offset
Error (Sine)
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-9.
trigier source,Akd +bO" phase.. v
function out jack. (See Figure l-2B.)
Table 1-9.
Limits for DC Level (Square) and DC Offset Error (Sine)
1. Connect the function synthesizer to a DMM as
shown in Figure 1-a. Turn on both instruments.
2. Restore factory defaults on the Model 3940 by press-
ing SHIFT PRST.
3. Promam a 2OVp-P square wave, nated mode, Ext %.
5. ChAge
the function, amplitude,
mode, trigger
source, and phase settings of the main and sub syn-
thesizers according to Table l-9, and verify the volt-
age readings. When verifying subsynthesizer accu-
racy, switch the coaxial cable to the subsynthesizer
Synthesizer
Main
Main
Sub*
Function
Square
Sine
Sine
Amplitude
2ovp-p
2ovp-p
IL.OlVp-p
2.oovp-p
2.oovp-p
Mode
Gate
Gate
Cont.
Trigger
Source
Extk
Ex&
Intx
Phase
+90"
-90"
O0
O0
Allowable Reading
(WC to
28W
9.8V to
10.2v
-9.w to
-10.2v
fl2OmV
f3OmV
tiOmV
i2OmV
* Note: Function Out is OFF for Sub Synthesizer test.
l-11
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