Charles 7305-14 4W-2W, Manual

Page: 15 / 22

Section 730-514-202
15
Table 6. Loaded/Nonloaded Cable Equalization
S8 Switches ’IN” (X) Equalizer Gain
dB*
S8 Switches ’IN’ (X) Equalizer Gain
dB*
Slope LF EQ 2800
Hz
400 Hz Slope LF EQ 2800
Hz
400 Hz
1 2 4 4’ –.5 –1
Hz
1 2 4 4’ –.5 –1
Hz
0.0 –0.4 X X +6.0 –2.5
X +0.2 –0.9 X X X +6.1 –3.0
X +0.2 –1.4 X X X +6.2 –3.6
X X +0.3 –2.2 X X X X +6.3 –4.4
X +1.0 –0.9 X X X +7.0 –3.1
X X +1.1 –1.4 X X X X +7.1 –3.6
X X +1.2 –1.9 X X X X +7.2 –4.1
X X X +1.3 –2.3 X X X X X +7.3 –4.9
X +2.0 –1.1 X X +8.0 –4.3
X X +2.1 –1.6 X X X +8.1 –4.8
X X +2.2 –2.1 X X X +8.2 –5.2
X X X +2.3 –2.9 X X X X +8.3 –5.8
X X +3.0 –1.7 X X X +9.0 –4.8
X X X +3.1 –2.1 X X X X +9.1 –5.3
X X X +3.2 –2.7 X X X X +9.2 –5.9
X X X X +3.3 –3.5 X X X X X +9.3 –6.6
X +4.0 –1.9 X X X +10.0 –5.0
X X +4.1 –2.3 X X X X +10.1 –5.5
X X +4.2 –2.9 X X X X +10.2 –6.0
X X X +4.3 –3.6 X X X X X +10.3 –6.8
X X +5.0 –2.4 X X X X +11.0 –5.6
X X X +5.1 –2.9 X X X X X +11.1 –6.0
X X X +5.2 –3.4 X X X X X +11.2 –6.6
X X X X +5.3 –4.2 X X X X X X +11.3 –7.3
*Referenced to 1000 Hz level. (1000 Hz gain is 0dB for all equalization settings.)
Note: When no equalization is required, or flat frequency response of the receive amplifier is desired, place all
switches on S8 to OUT.
8. ALIGNMENT
The CFMs contain gain controls which must be adjusted to set the transmit line and receive station TLPs (trans-
mission level points). They also contain controls for receive amplitude equalization. Use the following procedures
to align the receive voice path and the transmit voice path. Be certain that all options have been properly condi-
tioned for the application in accordance with Part 7 before beginning the alignment procedure.
The following test equipment is required to properly align the CFMS.
Transmission Measuring Set (TMS): WECO 23A, Hewlett-Packard 3550, or equivalent with self-con-
tained Variable Frequency Oscillator (VFO)