ES79 Ring Modulator
ELBY Designs - Laurie Biddulph
9 Follan Close, Kariong, NSW 2250, Australia
2 of 2
Construction of the ES79 requires the assembly of 1 board:-
Column 1 - ES79 PCB (
Constructors should refer to the
for any specific comments
regarding the board assemblies, the
for the current value of
all components and
for general PCB assembly
guidelines.
1. Assemble the 3x Jack Carrier Board assemblies (
2. Fit all components to the boards following normal assembly
guidelines except for the sub-assemblies
3. Mount the sub-assemblies but do not solder
4. Offer the assembly up to the front panel and secure all panel
components using the supplied nuts
5. Solder the sub-assemblies in to place
Calibration
Equipment required:
1. +6VDC voltage source
2. 1kHz 5VAC sawtooth
Calibration procedure:
1. Set mode to [XY]
2. Monitor [OUT]
3. Adjust P201 for 0V output
4. Apply +6VDC to [VC-X] and [VC-Y]
5. Adjust P101 for an output of 6VDC
6. Remove the +6VDC
7. Connect a sawtooth to [X]
8. Adjust P102 for minimum AC feedthrough
9. Move the sawtooth to [Y]
10. Adjust P201 for minimum AC feedthrough
