Leader Electronics Corp. LDM-171 - Rear Panel

@BALANCE FINE%COARSE
This control adjusts the balance in distortion
measurement. Use the outer control for coarse
adjustment and the inner control for fine ad-
justment. Use the fine adjustment when the
meter reads about 1% below.
Note: The FINE control is inoperative in the
auto-tuning mode.
@ FREO RANGE
Use this control in distortion measurement to
select the range appropriate to the frequency of
the signal under measurement. The tuning
frequency is the value indicated on the fre-
quency dial multiplied by this range.
@ HPF OUT I /IN---
The high-pass filter rejects hum and other low-
frequency components in the signal being meas-
ured during distortion or S/N measurement.
The cutoff frequency is 400Hz. The filter roll-
off is 12dB/oct. The filter operates when the
control is pressed to the IN position ( ...-.. ) .
@Meter
The meter indicates the measured distortion,
S/N, or AC voltage value. Although calibrated
in rms values, it has a mean value response.
@ Mechanical zero-adjustment control
This is a screwdriver adjustment that can be
turned to set the pointer to zero when power is
OFF.
Fig. 3-2
3.2
Rear Panel (Fig. 3-2)
.~
~)Fuse
The fuse cap can be turned in the direction of
the arrow with a Phillips screwdriver to remove
both it and the fuse. Use a fuse of the correct
type and rating.
;~~ Power cable winding posts
Plug the cable into an outlet of the rated volt·
age.
19' Power cable winding posts
tW Ground terminal
The ground terminal is connected to the chassis.