Last modified 27APR2000
| Model | # Chan. | Type | Threshold (mV) | Output Width (nSec) | In / Out Delay (nSec) | # Of Outputs
Pos / Neg |
Veto | Max Rate (MHz) | Summing Output | Remote Control | Burst Guard | Hi Z Bridged Input |
| EG&G: 934 | 4 | Constant Fraction | -30 to -1000 | <6 to >150 | 13 | 0 / 3 | No | 100 | No | Yes
(Bin Gate) |
||
| EG&G: T105/N | ||||||||||||
| EG&G: T140/N | 4 | Zero Cross | -200 | < 5 to > 10 | 8 | 0 / 1 | No | 250 | No | Yes
(Bin Gate) |
No | No |
| EG&G: TR204A/N | 2 | Updating | ||||||||||
| ELSCINT: STD-N-1 | Constant Fraction | |||||||||||
| LRS: 121N | ||||||||||||
| LRS: 161 | 2 | Updating | 150 | |||||||||
| LRS: 161L | 2 | Updating | 150 | |||||||||
| LRS: 321 | 4 | |||||||||||
| LRS: 321B | 4 | Updating | -100 to -800 | 5 to > 800 | 9 | 1 / 2 | No | 100 | No | Yes
(Bin Gate) |
No | No |
| LRS: 321BL | 4 | Updating | -100 to -800 | 5 to > 800 | 9 | 1 / 2 | No | 100 | No | Yes
(Bin Gate) |
No | No |
| LRS: 321C | 4 | |||||||||||
| LRS: 420L | 8 | |||||||||||
| LRS: 4608C | 8 | 150 | ||||||||||
| Model | # Chan. | Type | Threshold (mV) | Output Width (nSec) | In / Out Delay (nSec) | # Outputs
Pos / Neg |
Veto | Max Rate
(MHz) |
Summing Output | Remote Control | Burst Guard | Hi Z Bridged Input |
| LRS: 620 | 8 | 100 | ||||||||||
| LRS: 620AL | 8 | Non-Update | -30 to -1000 | 5 to > 20 | 7.5 | 0 / 3 | No | >100 | No | Yes
(Bin Gate) |
No | No |
| LRS: 620B | 8 | Non-Update | 100 | |||||||||
| LRS: 620BL | 8 | Non-Update | -30 to -1000 | 5 to 22 | 7.5 | 0 / 3 | No | >100 | Yes | Yes
(Bin Gate) |
No | No |
| LRS: 620BLP | 8 | Non-Update | -30 to -1000 | 5 to 22 | 7.5 | 0 / 3 | No | >100 | Yes | Yes
(Bin Gate) (Thresh) |
No | No |
| LRS: 620CL | 8 | Yes | 100 | |||||||||
| LRS: 620D | 8 | Non-Update | -30 to -1000 | 5 to 20 | 7.5 | 0 / 3 | Yes | >100 | Yes | Yes
(Bin Gate) |
No | No |
| LRS: 620L | 8 | Non-Update | -30 to -1000 | 5 to 20 | 7.5 | 0 / 3 | No | >100 | No | Yes
(Bin Gate) |
No | No |
| LRS: 621AL | 4 | Updating | -30 to -1000 | 5 to 1000 | 9.5 | 1 / 5 | No | >110 | No | Yes
(Bin Gate) |
No | No |
| LRS: 621BL | 4 | Updating | -30 to -1000 | 5 to 1000 | 9.5 | 1 / 5 | No | 110 | No | Yes
(Bin Gate) (Thresh) |
Yes | Yes (1) |
| LRS: 621BLP | 4 | Updating | -30 to -1000 | 5 to 1000 | 9.5 | 1 / 5 | No | 110 | No | Yes
(Bin Gate) (Thresh) |
Yes | Yes (1) |
| LRS: 621L | 4 | Updating | -30 to -1000 | 5 to 1000 | 9 | 1 / 5 | No | 120 | No | Yes
(Bin Gate) |
No | |
| LRS: 623 | 8 | Updating | -30 to -1000 | 6 to 150 | 11 | 0 / 3 | No | >100 | No | Yes
(Bin Gate) |
No | |
| LRS: 623B | 8 | Updating | -30 to -1000 | 6 to 150 | 11 | 0 / 3 | No | >100 | No | Yes
(Bin Gate) |
No | Yes (1) |
| LRS: 821 | 4 | Updating | -30 to -1000 | 5 to 1000 | 11.0 | 1 / 5 | Yes | 100 | No | No | Yes | Yes (1) |
| Model | # Chan. | Type | Threshold
(mV) |
Output Width (nSec) | In / Out
Delay (nSec) |
# Outputs
Pos / Neg |
Veto | Max Rate (MHz) | Summing Output | Remote Control | Burst Guard | Hi Z Bridged Input |
| MECHTRON: 605 | 2 | |||||||||||
| ORTEC: 473A | Constant Fraction | |||||||||||
| ORTEC: 934 | Constant Fraction | |||||||||||
| ORTEC: T105/N | 2 | |||||||||||
| ORTEC: T108/N | 8 | |||||||||||
| ORTEC: T120/N | 4 | Updating | ||||||||||
| ORTEC: T121/NL | 4 | Updating | ||||||||||
| ORTEC: T140/N | 4 | Zero Cross | -200 | <5 to >10 | 8 | 0 / 1 | 250 | Yes
(Bin Gate) |
||||
| ORTEC: T200/N | 1 | Fast Trigger | -100 to -250 | 3 or 5 | 0 / 2 | 225 | Yes
(Bin Gate) |
|||||
| ORTEC: T204A/N | 2 | Updating | ||||||||||
| ORTEC: TD101/N | Differential | |||||||||||
| ORTEC: TR204A/N | 2 | Updating | ||||||||||
| Model | # Chan. | Type | Threshold (mV) | Output Width (nSec) | In / Out Delay (nSec) | # Outputs Pos / Neg | Veto | Max. Rate (MHz) | Summing Output | Remote Control | Burst Guard | HI Z Bridged Input |
| PHILLIPS: 710 | 8 | Updating | -30 to -1000 | 4 to 150 | < 8 | 1 / 3 | Yes | 150 | Yes | |||
| PHILLIPS: 710D | 8 | Updating | -10 to -1000 | 4 to 150 | < 8 | 1 / 3 | Yes | 150 | Yes | |||
| PHILLIPS: 711 | 6 | Updating | -10 to -1000 | 4 to 1000 | < 8 | 1 / 2 | Yes | 150 | Yes | Yes | ||
| PHILLIPS: 715 | 5 | Constant Fraction | -25 to -1000 | 5 to 150 | < 10 | 1 / 3 | Yes | 100 | No |
(1) High Impedance bridge inputs are available at the expense of one normal output.
(2) 100 nSec output duration is possible with a restriction that the input and output widths can not be equal
Constant Fraction - Permits optimum timing measurements to be made with photomultiplier tubes or fast solid-state detectors. Each input signal is split so that a portion of the signal is delayed and subtracted from a fraction of the undelayed signal. The resulting bipolar constant fraction signal has a baseline crossover that is virtually independent of the input signal amplitude. The zero crossing point is detected and used to provide precisely timed logic pulses for a wide dynamic range of input signals.
Updating - The unit may be retriggered during the time an output from a previous input signal is being produced.
Non-Updating -The output must return to a zero, or "off", state before retriggering can occur.
Differential - Produces an output pulse from only those inputs which fall within a amplitude window.
Zero Crossing - Produces an output pulse after the input surpasses the input trigger level, typically -200mV, and then crosses thru 0V to a positive level.
Fast Trigger - Produces a fast trigger output, typically 3 or 5nSec in width, for each input signal that exceeds the threshold level.
Last modified 27APR2000
M. Behnke