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Idiomas disponibles
Idiomas disponibles
Gain adjustment
Setting: (2)
(7)
2k
Cal. -10dB
1) Adjust both sine wave generators
HM8037 for an outputof 1V. (Verify with
HM8011-3) Frequency setting 200Hz
and 1600Hz is recommended.
2) Connect both generators to the input (9)
of HM8027 according to the circuit in the
section operational check.
3) Connect HM8011-3 (setting 2V, AC) to
test point E on test connector CN101.
4) Adjust measured value to 300mV by
means of amplitude control (A).
5) Tune f requency control (5) until LEDs
(4) go off.
6) Select 100% measurement range with (6).
7) Adjust readout (1) for 10.0 by means of
VR103.
Calibration adjustment
1) Same settings and connections as „Gain
adjustment".
2) Select calibration mode by means of
pushbutton (7).
3) Adjust VR301 for 100% readout (1).
Sous réserve de modifications / Reservado el derecho de modificatión
(11)
Adjustment of frequency control circuit
Setting: (2)
(7)
2k
Cal. -10dB 100%Cal.
1) Connect the output of HM8037 to input
(9) of HM8027 (output voltage 1V, 1kHz).
2) Adjust display (1) for 100 by means of
Level control knob (8).
3) Tune frequency control (5) until LEDs (4)
go off.
4) Adjust frequency control (5) of HM8027
so that the right LED (4) just lights.
5) Set f requency of HM8037 to 1150Hz.
6) Adjust VR101 so that the left LED (4)
just lights.
Frequency compensation
1) Connect the output of HM8037 to input
(9) of HM8027.
2) Tune HM8027 for correct distortion rea-
ding.
3) Measure and take note of DC-voltage at
point A of test connector CN101 (-5V DC
typ.).
4) Adjust frequency of HM8037 to 20kHz.
5) Recalibrate and readjust the HM8027.
6) Adjust VC101 to obtain a DC-Voltage
same as 3) ±100mV.
(11)
(8)
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