Caen 968 - Internal Jumpers; Fig. 2.2: Mod. N968 Side View with Jumpers Location

Document type: Title: Revision date: Revision:
User's Manual (MUT) Mod. N968 Spectroscopy Amplifier 14/06/2004 4
NPO: Filename: Number of pages: Page:
00100/03:N968x.MUTx/04 N968_REV4.DOC 14 8
2.5 Internal Jumpers
Some settings can be performed via internal jumpers (location is shown in Fig. 2.2).
Preamp Gain (sw4): allows to set the input preamplifier stage gain either at x1 or
x0.1
PRS Polarity (sw3): allows to configure the module in order to accept on the PRS
input either positive or negative pulses. If the preamplifier
connected to the N968 does not feature the PRS, set the
jumper to positive
G.A. Gain (sw1): allows to introduce either a x2 or x1 gain factor at the Gated
Amplifier stage
Th. Symmetry (sw5): allows to set the BLR negative threshold either symmetric
(equal to the BLR threshold) or asymmetric (BLT threshold +
300mV)
Fig. 2.2: Mod. N968 side view with jumpers location
x1 x0.1
sw4
x2 x1
sw1
ASYMM SYMM
sw5
NEG POS
sw3
PRS POLARITY