Frequency Response and Output Voltage

TB-9-6625-1097-35 Oscillator Hewlett-Packard Model 241A Manual
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TB 9-6625-1097-35

Figure 2. Oscillator - rear view.

(5) Check frequency and voltage at 100, 200, 700, and 900 kHz. Frequency counter

will indicate within 1% of selected frequency and true rms voltmeter will indicate between

90 and 125 mV. If necessary, adjust ADJ 1MC, C112, and C130 for optimum performance.

9. Frequency Response and Output Voltage

a. Performance Check

(1) Connect equipment as shown in figure 1, CONNECTION B.

(2) Press 1.00 FREQUENCY DIGITS pushbuttons and X1 KC

MULTIPLIER pushbutton.

(3) Adjust VERNIER control to CAL.

(4) Adjust AMPLITUDE control for a 1.00 V ac indication on multimeter.

(5) Press 5.00 FREQUENCY DIGITS pushbuttons. Multimeter will indicate

between .98 and 1.02 V ac.

(6) Press MULTIPLIER and FREQUENCY DIGITS pushbuttons as listed in table 4.

Multimeter will indicate between .98 and 1.02 V ac.

Table 4. Frequency Response - Low Frequency

Test instrument pushbutton settings

Frequency digits

Multiplier

1st

X1 KC

X100 CPS

X10 CPS