Boonton Electronics 71A, 71AR - Location of Controls and

2.4 Location of Controls and Adjustments, Model 71 AR
26 INDUCTANCE ZERO
STANDARD CAPACITOR SWITCH
27
15 t.l MEGOHM RESISTOR
Remove for dvm's having
1 Ma input resistance
DC OUTPUT FOR DIGITAL
VOLTMETER
(100 mV or 300 mV depending
on range numerics)
12 DC BIAS INPUT
(up to ±200 V)
COMMON GROUND CONNECTION
FOR DC OUTPUTS
17 DC OUTPUT CONNECTION FOR
RECORDER, X·Y PLOTTER
>1 V fnrJnads >10 M!l
LEVEL ADJUSTMENT FOR
"DVM" OUTPUT
19 HIGH Q CALIBRATION
ADJUSTMENT
LOW Q CALIBRATION
ADJUSTMENT
21 lODD pF RANGE ZERO ADJUSTMENT
Individual range calibration adjustments
behind this plate (factory adjustments)
LINE VOLTAGE COMPENSATION
(Factory Adjustment)
Figure 2-2
71A
a 2-3