Tried to instal analog ampermeter. Cut L-wire, added to new wires. One wire to +ampermeter terminal and L-. Another to - ampermeter terminal and to Another L- wire. Laser shoots, but ampermeter stays still, tried to change ampermeter terminal, same. Tried to disconect ampermeter, laser doesnt work. Any help?
Can you show us pictures of:
- The wiring
- The meter
- The LPS connections
The ampermeter should not be in the L wire (this is only the signal to fire), it should be between the laser tube kathode and the laser power supply…
On most LPS the cathode return connection is labeled L-, unfortunate because the control pin is labeled L.
The L- is on the leftmost connector and the L is on the rightmost connector.
1 Like
@Lauris_Macio,
Did the laser work before installing the meter?
What meter are you using?
See requests for pictures above!
Sorry, I didn’t realize that some “genious” named the cathoide pin L-. Why not HV-C? Hm…
1 Like
Stop making sense! 
1 Like
perhaps because when you connect L- to L you have a resonant oscillator!
1 Like