HV for NaI = + 693 V

Preamplifier: ORTEC Model 113, I/P Capacitor = 1000 pF

Amplifier: ORTEC 572, internal jumpers = x1, Gain = x1, Coarse Gain = x200, Shaping Time = 0.5 us, I/P polarity: negative, O/P: Unipolar

Signals from the detector and preamp are negative and from ampifier is positive.