Laurel Electronics LTM CTR SERIES PULSE, AC or PROCESS TOTALIZER INPUT, SERIAL DATA OUTPUT - Manual (Page 39)

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DUAL CHANNEL SIGNAL CONDITIONER
Crystal Accuracy at 25ºC....................................................................................................±2 ppm
Crystal Tempco...................................................................................................±1 ppm/degree C
Long-Term Drift of Crystal.........................................................................................±5 ppm/year
Signal Types .................... AC, NPN, PNP transistor outputs, contact closures, magnetic pickups
Max Pulse Rate ........................................................1 MHz on Channel A, 250 kHz on Channel B
Channel Isolation ..................................................Channel A & channel B share common ground
Low Pass Filter ................................................................................ 250 Hz or 30kHz (selectable)
Hysteresis ..................................................................................... 15 mV to 2.2 Vp-p (selectable)
Trigger level ....................................................................................±15 mV to ±1.7 V (selectable)
Debounce Circuitry ...................................................................................0, 3, 50 ms (selectable)
V-TO-F PROCESS RECEIVER & TOTALIZER SIGNAL CONDITIONER
Signal Levels.......................................................................0-1 mA, 4-20 mA, 0-10 V (selectable)
Accuracy at 25ºC............................................................................................................. ±0.025%
Span Tempco........................................................................................... ±0.003% of reading /°C
Zero Tempco.......................................................................................... ±0.003% of full scale /°C
QUADRATURE SIGNAL CONDITIONER
Signal Type .......................................................................Differential or single-ended quadrature
Transitions Monitored................................................................................................. x1, x2 or x4
Max Pulse Rate ........................................................ 250 kHz at x1, 125 kHz at x2, 62.5 kHz at x4
Maximum Differential Signal Amplitude...................................................................................14V
Conversion Technique for Rate.........................................................................................1/period
Conversion Time for Rate ................................................ Gate time + 30 ms + 0-2 signal periods
Time Before Zero Output for Rate ...................................................... 0 to 199.99 sec (selectable)
Zero Wait Time for Rate..................................................................... 0 to 199.99 sec (selectable)
Output & Display Update Rate ................................................................Same as conversion rate
Time Base Accuracy for Rate ........................................................................Calibrated to ±2 ppm