Serial DDS-1-xx (destination)
1. Checklist
- DC input ferrite (tied down):
- fan shroud (glued down):
- VGA board clears LO-DIST board:
- solid contacts at crimped connectors:
- thermal foam under and in front of clock bell:
- adjust auxilary heater to minimum (CW): (OBSOLETE: Remove regulator chip)
- heat shrink at 12 V splitter:
- tape marking 12 V and 5 V on cables to LO-DIST and LO-BUF boards:
- relay control connected to BNC:
- front panel fiber optics blink:
- fan and velcro, tied down at (11,11.5) cm:
- IQ cables from DDS-1 to LO-DIST same length:
- heatsink glued to each DDS:
- jumpers:
- USB FTDI grounding strap:
- clock grounding strap:
- serial enable, DDS1 and DDS2 boards:
- external clock, DDS1 and DDS2 boards:
- external clock, LO-BUF board:
- triple, 2/22 dBm TX output, on 22 dBm, glued, LO-DIST board:
- TUF source internal, LO-DIST board:
- 0-Ohm resistance on divide by 2, LO-BUF board:
- VCO disable, CLK board:
2. Power supply measurements
(use EDAC 10953A 12 V 80 W adapter only)
- DC voltage 12 V input:
- DC voltage 5V PSU output (V):
- DC voltage -5V PSU output (V):
- DC current reading (A): (clock warmed up, chirping)
- AC power reading (A):
- temperature brass bell/air: C
- GALI-84 TX (~5.74 V):
- GALI-84 LO (~5.62 V):
- GALL-74 RX (~4.67 V):
