1. Expand
   title Limit Supply: CONTROL Voltage Source
   Using Rohde & Schwarz HMP2020 power supply Make sure output is off The SMA-F input labeled CONTROL is limited from 0V to 10V.  This voltage is used to set the gain of the pulse.  If you want a pulse of ~10V, then set V_CONTROL = 1V Image Modified → Image Modified Steps 1 Hit Menu 2 Down arrow to "Over Voltage Protection (OVP) 3 Right arrow to select OVP 4 Use arrows and/or scroll wheal to set for CH1: 10V ← Max voltage CONTROL Port can take

1. Expand
   title Pulser Supply
   Turn on this supply This supply is used to provide +/-15V to the pulser box:  CH [V] 1 +15 2 -15 3 N/A Image Added → Image Added

1. Expand
   title Source Meter Setup
   Using rear outputs as they are limiting the Keithley 2410 SourceMeter is 1.1kV.  The black-box limiter in the back limits the current to 5mA and voltage to 240V. Setting Value Note(s).............. FRONT/REAR REAR LIMIT CURRENT 105uA Reverse biasing substrate, as long as we don't lock up the substrate by turning on the parasitic thyristor (PNPN), current consumption is very lower SOURCE +10V Make sure to plug cable from rear to SMA-F COMP port on front of pulser-box (see green arrow in photo) Image Added → Image Added → Image Added

1. Expand
   title Pulse Setup
   Image Modified → Connect CH1 to SMA-F _TRIGGER port & terminate with 50 Ohm → Image Added Setting Value Note(s)............................................. Mode Pulse Impedance 50 Ohm Period 1ms ← In photo used frequency, but easier with period HighLevel 3.3V LowLevel 0mV Pulse Width 990us ← Want a 10us pulse low (needs to be high most the time for proper operation) Rise Edge 6ns Delay 0.0ns

AC coupled OUT of Pulser box to oscilloscope (1MOhm load) and DET_BIAS of camera 

1. Expand
   title Connecting pulser
   Image Added → Image Added

1. Output voltage step size = 10mV

2. Expand
   title Optional ATTN 10X
   OPTIONAL: If a finer sweep is required (1mV) a ATT 10X has been provided (it is unidirectional)  Image Added → Image Added ← OPTIONAL!!!

3. As you increase the voltage you'll you see an ~10X increase in the pulser-ouput height voltage

   1. Expand
      title Examples...
      CONTROL [V] Photo 1 Image Added 4 Image Added

If pulser is working correctly will see LED light come on

1. Expand
   title LED Location
   Image Added → Image Added