technical manual for sailor compact hf ssb t2130 - Gopher Proxy
technical manual for sailor compact hf ssb t2130 - Gopher Proxy
technical manual for sailor compact hf ssb t2130 - Gopher Proxy
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3 SERVICE T2130<br />
3.5.1 POWER AMPLIFIER (MODULE 1)<br />
Presettings. Note 2.<br />
3.5.1.1 BIAS CURRENT<br />
Select service programme SP-33, see section 3.9.1.<br />
3.5.1.2<br />
Connect an ammeter (F.S. 100 mA) in series with P1, and check that the current is 80 mA<br />
±30 mA.<br />
3.5.1.3<br />
Select normal receive mode. Check that the current is zero.<br />
3.5.1.4<br />
Connect an ammeter (F.S. 1A) in series with P2, and check that the current is 450 mA<br />
±100 mA.<br />
3.5.1.5<br />
Select normal receive mode. Check that the current is zero.<br />
3.5.1.6 POWER GAIN.<br />
Select service programme SP-29, see section 3.9.1.<br />
3.5.1.7<br />
Connect an oscilloscope with 1:10 probe (0.2V/div) across J01. Adjust the level to 1 Vpp by means of<br />
the buttons ‘up’ and ‘down’.<br />
3.5.1.8<br />
Connect the oscilloscope with 1:10 probe (20V/div) to J02. Check that the level is 170 Vpp ±50V.<br />
3.5.1.9 CHECK OF FULL POWER OUTPUT<br />
Select normal transmit mode, frequency approx. 1.6 MHz. Connect the handset to RE2100.<br />
3.5.1.10<br />
Connect an oscilloscope with 1:10 probe (50V/div) to J02.<br />
3.5.1.11<br />
Key the transmitter and whistle into the microtelephone- Check that the level is more than<br />
245 Vpp.<br />
3.5.1.12<br />
Select a transmitter frequency near to 25 MHz.<br />
3.5.1.13<br />
Key the transmitter and whistle into the microtelephone. Check that the level is more than<br />
228 Vpp.<br />
PAGE 3-12<br />
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