SGC SG-2020 TEST DOCUMENT, Installation And Operation Manual

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© 1998 SGC Inc
SGC Inc. SGC Building, 13737 S.E. 26th St. Bellevue, WA. 98005 USA
P.O.Box 3526, 98009 Fax: 425-746-6384 or 746-7173 Tel: 425- 746-6310 or 1-800-259 7331
E-mail: sgc@sgcworld.com Web site: http://www.sgcworld.com
RF Input level AF output level
.3 µV >200 mV RMS
3 µV > 2 V RMS
30 µV > 2 V RMS
3 mV >2.25 V RMS
3 V > 2.25 V RMS
17.4 SET TRANSMITTER BIAS
Required Test Equipment
a) Digital Volt Meter
b) RF Power Meter
c) Dummy Load
Procedure
Tune the SG-2020 to 14.2 MHz.
Connect the power meter and dummy load to the SG-2020.
Connect the DVM to TP1 & TP2 on the LPA PCB.
Ensure the Mode is not CW.
With no signal connected to the mic. input activate the PTT line.
Use milli volt scale on DVM.
Adjust R7 on the LPA for 7 mV .
17.5 SWR NULL
Required Test Equipment
a) Digital Volt Meter
b) Audio signal generator
c) RF Power Meter
d) Dummy Load
Procedure
Tune to 14.2 MHz
Connect the power meter and dummy load to the SG-2020.
Connect the audio generator to the mic. input.
Connect the DVM between TP5 on the LPA PCB (DVM set on mV
scale) and Gnd.
Set the radio for 20 Watts output. Set the audio generator to 1000
Hz at a level of approximately 20 milli volts. Activate the PTT and
verify 20 Watts output on the power meter.