Appendix
7.4.3 Counters
Connector:
....................................................15 pin high-density female D-SUB
Count frequency:
...................................................................................max. 125 MHz
Location of Carry outputs:
.......................................................................ADC GATE connector
Input Impedance:
....................................................................................50 Ω / 0.25 W
Input pulse width:
(high or low)........................................................................min. 5 ns
Input HIGH voltage:
..........................................................................................min. 2.0 V
Input LOW voltage:
.........................................................................................max. 0.8 V
Output impedance:
(series resistor, Carry outputs)......................................33 Ω / 0.1 W
Output HIGH voltage:
I
OH
= -0.1 mA....................................................................min. 3.1 V
Output LOW voltage:
I
OL
= 0.1 mA......................................................................max. 0.2 V
7.4.4 Multichannel scaler
Dwell time modes:
.............................................................................. internal (auto), external
Internal dwell time:
(1 channel MCS) ....................................................................... min. 30 ns
(2 channel MCS) ....................................................................... min. 50 ns
.................................................................. max. (2
48-
- 1) x 10 ns = 32 days
in steps of: ......................................................................................... 10ns
External channel advance:
edge sensitivity: .................................................................... rising / falling
period (internally asured): ....................................................... min. 100 ns
uncertainty: .................................................................................... ±5.0 ns
Trigger uncertainty:
....................................................................................................... ±5.0 ns
Trigger (START) delay:
........................................................................................... 45.0 ns ±5.0 ns
Count (STOP) delay:
....................................................................................... 41.25 ns ±1.25 ns
102
F
ComTec GmbH
Fig. 7.5: Typical peak widths of Gaussian fitted pulses (32k range, 4µs shaping)
Summary of Contents for MCA4A
Page 2: ...2 F ComTec GmbH...
Page 8: ...8 F ComTec GmbH...
Page 71: ...Software Description F ComTec GmbH 71 Fig 4 35 Control Panel of the demo VI for LabVIEW...
Page 96: ...MPANT Software 96 F ComTec GmbH Fig 5 29 MPANT with four systems enabled...
Page 106: ...Appendix 106 F ComTec GmbH...
Page 107: ...Appendix 7 8 Personal Notes F ComTec GmbH 107...
