30
EQ CARD TEST PROCEDURES
1. 402 Equalizer Curve
Use the following test set-up parameters when measuring Full Range or High Frequency response
outputs:
A. Apply a signal of 850 Hz at 1 Vrms and adjust the amplifier's output to 6 Vrms.
B. Reference a dB meter to the output.
C. Measure the response according to the charts in Sections 1.1 and 1.2
1.1 402 Full Range Frequency Response
IMPORTANT: Set the Input Module's S2 switch to the Full Bandwidth (Full Range) position before
beginning this test.
1.2 402 High Frequency Response
IMPORTANT: Set the Input Module's S2 switch to the HF Only (High Frequency) position before
beginning this test.
FREQUENCY
OUTPUT SPECIFICATION (dbr)
60
-3.7
±
1.5 dB
105
+8.5
±
1.5 dB
220
+3.5
±
1.5 dB
850
0.0
4000
+5.8
±
1.5 dB
14500
+13.3
±
1.5 dB
FREQUENCY
OUTPUT SPECIFICATION (dbr)
60
-16.4
±
1.5 dB
105
-4.8
±
1.5 dB
220
+2.8
±
1.5 dB
850
0.0
4000
+5.8
±
1.5 dB
14500
+13.3
±
1.5 dB
2. 502A Equalizer Curve
Use the following test set-up parameters when measuring Full Range or High Frequency response
outputs:
A. Apply a signal of 600 Hz at 1 Vrms and adjust the amplifier's output to 6 Vrms.
B. Reference a dB meter to the output.
C. Measure the response according to the charts in Sections 2.1 and 2.2.
2.1 502A Full Range Frequency Response
IMPORTANT: Set the Input Module's S2 switch to the Full Bandwidth (Full Range) position before
beginning this test.
FREQUENCY
OUTPUT SPECIFICATION (dbr)
40
-24.5
±
2.0 dB
140
+4.3
±
1.5 dB
600
0.0
2200
+3.5
±
1.5 dB
5000
+12.5
±
1.5 dB
15000
+19.0
±
1.5 dB
Summary of Contents for 1800-V
Page 7: ...Figure 3 502A EQ Card HF Only Response Figure 4 502A EQ Card Full Frequency Response 7...
Page 8: ...Figure 6 802 EQ Card HF Only Response Figure 5 502B EQ Card Response 8...
Page 9: ...Figure 7 802 EQ Card Full Range Response 9...
Page 69: ...402 Equalizer Card Schematic 69...
Page 70: ...502A Equalizer Card Schematic 70...
Page 71: ...502B Equalizer Card Schematic 71...