accurate reading can be obtained by noting the meter DC OUTPUT VOLTAGE scale
indication and multiplying this value by the factor indicated in the TIMES METER
READING dial.
2. To operate the ATS in the reverse manual balance mode (i.e., using the ATS to
provide a reference output level and then setting the RMS value of the applied
signal to equal this voltage), proceed as follows:
a. Couple the ATS to line power and momentarily depress the POWER PUSH
pushbutton switch; the indicator portion of the switch should illuminate.
Allow
the ATS to warmup for at least 20 minutes.
b. Set the mode switch to MANUAL BALANCE.
c. Set the RANGE VOLTS switch to obtain the desired voltage and note which
indicator (AC or DC) is illuminated.
If the AC indicator is illuminated,
momentarily depress the TRANSFER-RESET pushbutton switch; the AC indicator will
extinguish and the DC indicator will illuminate.
d. With the voltage source set for minimum output level, interconnect the
equipment as illustrated in Figure 3-4.
e. Adjust the MANUAL BALANCE COARSE and/or FINE controls until the desired
RMS voltage level (as indicated on the DC digital voltmeter) or potentiometer null
is obtained.
f. Without further adjustment of either the MANUAL BALANCE COARSE and/or FINE
control, momentarily depress the TRANSFER RESET pushbutton switch; the DC indicator
will extinguish and the AC indicator will illuminate.
g. Carefully adjust the output level of the voltage source until the pointer
of the ATS meter deflects to an indication of 0 on the BAL scale.
When this
occurs, the voltage source output level has been set to the desired value.
3. To operate the ATS in the automatic balance mode, proceed as directed in the
following steps:
a. Couple the ATS to line power and momentarily depress the POWER PUSH
pushbutton switch; the indicator section of the switch should illuminate.
Allow
the ATS to warm up for at least 20 minutes. Set the auto recycle slide switch S8
on the rear panel to "OFF".
b. Set the mode switch to AUTO; the AC indicator will illuminate.
Set the
NORMAL/FAST toggle switch to NORMAL.
c. Set the RANGE VOLTS switch to obtain a dial indication of 500 to 1000.
Push the STANDBY pushbutton and note that the overload lamp is illuminated.
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