SPECIFICATIONS:
Output Level: +11 dB Sine
+14 dB Square
Output Impedance: 100 Ω
THD (Sine): <1%
Size: 4.25" x 3.75" x 1.75"
Power: 12 - 15 Volts DC
Rolls Corporation
Salt Lake City, UT
11/19
Made in USA
ww.rolls.com
Made in USA
ww.rolls.com
MO2020se
TESTOSCILLATOR
Signal Generator
What's in the box?
1 - Made in USA MO2020se
1 - This owners manual
1 - Rolls PS27s Power supply
The MO2020se is a signal generator for electronic testing
in the audio frequency range. It has XLR, RCA and 1/4"
unbalanced sine wave outputs, and a 1/4" unbalanced
square wave output. For external control or sweeping
of the frequency range, a 1/4" VCO input is provided to
receive 1.2 to 5 volts dc.
• Frequency range from 20Hz to 24kHz
• Balanced XLR, RCA and 1/4" unbalanced Outputs
• Sine and Square wave outputs
• -30 dB pad for referencing
12-15 VDC: Connects to the included
Rolls PS27s power adapter.
SQR LEVEL
+14
0
dB
SINE LEVEL
-
+10
0
dB
FREQUENCY
20
100
250
500
1K
24K
4K
10K
Hz
SQR OUT
SINE OUTPUTS
VCO INPUT
1.2 - 5 VDC
12 - 15 V
MO2020se
TESTOSCILLATOR
SINE/SQUARE WAVE GENERATOR
PAD
-30 dB
NORMAL
OUTPUT
PAD
MO2020se
TESTOSCILLATOR
pwr
-
2K
-10
+10
The MO2020se is designed to provide a sine wave, or square wave outputs, for testing audio devices. The units frequency output var-
ies from 20Hz to 24kHz.
Output Pad: When depressed, the
output level is dropped by 30 dB.
SQR Out: 1/4" unbal-
anced jack containing
the square wave signal.
VCO Input: 1/4" jack for connection to a Volt-
age Control source which may vary from 1.2
volts to 5 volts dc. This voltage allows for ex-
ternal control of the MO2020se's frequency.
THE FREQUENCY CONTROL MUST BE-
SET TO MAXIMUM FOR PROPER OPERA-
TION OF THE VCO CONTROL.
Sine Out: Balanced XLR, RCA
and 1/4" unbalanced jacks con-
taining the sine wave signal.
Frequency: Varies the frequency generated by
the MO2020se from 20Hz to 24kHz.
PLEASE NOTE: THE FREQUENCY MARKINGS ON THE MO2020 ARE APPROXIMATE AND MAY VARY. FOR ACCURATE FRE-
QUENCY SELECTION, USE A RELIABLE FREQUENCY COUNTER.
Sine Level: Controls the output
level of the Sine Out jack.
SQR Level: Controls the output level of
the SQR (square) Out jack.
-
1
-
2
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