Elecraft XV Transverter Owner's Manual - Manual (Page 49)

Appendix B – Troubleshooting
RF Power Module U7 voltages:
Transverters U7 Pin (from rear) RX Mode TX Mode
XV50,
XV144,
XV222, &
XV432
1 0
do not
measure
2 13.6
3 0 3.5 – 4.5
4 0
do not
measure
Typical Voltages at test points (VDC unless otherwise noted):
Location Rx Mode Tx Mode
TP1 XV50 0.8 – 1.2 0.8 – 1.2
XV144 1.2 – 1.8 1.2 – 1.8
XV222 1.0 – 1.5 1.0 – 1.5
XV432 2.2 nom. 2.2 nom.
TP2 XV50, 144, 222 200-275 mV N/A
XV432 5.0 VDC N/A
TP5 XV50 N/A -
XV144 N/A -
XV222 N/A -
XV432 N/A 9*
TP6 XV432 Only N/A 1.5*
* at 20 watts output.
Typical voltages active devices (VDC unless otherwise noted):
Location Rx Mode Tx Mode
U6 Output Pin 0 5
U4 1 13.6 13.6
2 0 0
3 5 5
Q2 B 0.25 – 0.8 0.25 – 0.8
E 0 0
C 6.5 6.5
Q1 B 4,1 4.1
E 3.6 3.6
C 8.5 8.5
U5 Output Pin 0 4.7
U1 Output Pin 3.0 – 6.0 0
U3 Input 0 13.6
Output 0 5