Vectronics VEC-4001K - Manual (Page 19)

VEC-4001K Owner’s Manual Professional Function Generator
19
! ! 107. Cut and prep another set of 6" wires (red, yellow, and black). Find
R3.
! ! 108. Attach a red lead to the top (CW) terminal of R3 and solder.
! ! 109. Attach a yellow lead to the center (CTR) terminal of R3 and solder.
! ! 110. Attach a black lead to the bottom (CCW) terminal of R3 and solder.
! ! 111. Twist all three wires together, leaving about 1 1/2" unwound at the
far end.
! ! 112. Cut and prep a 6" red and black lead. Find binding posts J2, J3.
! ! 113. Connect the red wire to J2 and solder.
! ! 114. Connect the black wire to J3 and solder.
! ! 115. Twist together.
! ! 116. Cut and prep a 6" red, yellow, and black lead. Find SW3 and locate
the lower right-hand terminal (see diagram).
! ! 117. Attach a black lead on the bottom right-hand terminal and solder.
! ! 118. Move left one terminal and attach a red lead. Solder.
! ! 119. Move left again, and attach a yellow lead. Solder.
! ! 120. All three leads should be connected on the bottom row. Twist wires
together.
! ! 121. Cut a 6" red and black lead. Remove 1/4" insulation from one end
and 3/8" insulation from the other end on each.
! ! 122. Thread the 3/8" end of the black lead through the two free terminals
on J1. Solder.
! ! 123. Thread the 3/8" end of the red wire through the center terminals on
SW1. Solder.
! ! 124. Twist both together.
This completes front-panel wiring. Check your work against the wiring pictorial
for errors. The next group of connections will be made on the PC board.
Locate the three-wire harness connected to Frequency control R1. Connect to
the PC board as follows:
! ! 125. Connect R1 red wire to FREQ_CW (near key end of U1).
! ! 126. Connect R1 yellow wire to FREQ_MID (near unkeyed end of U3).
! ! 127. Connect R1 black wire to FREQ_CCW (near R10).