Omega Engineering OMB-DBK-34A, User Manual

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DBK Option Cards and Modules
879895
DBK7, pg. 13
Specifications - DBK7
Name/Function: 4-Channel Frequency-to-Voltage Input Card
Input Channels per Card : 4
Maximum Cards per System : 64
Maximum Channels per System : 256
Input Connector : 1 BNC connector per channel
Connector : DB37 male, mates with P1
Frequency Ranges : (programmable) 0 Hz to 960 kHz
Output Voltage Range : -5 V to +5 V
Debounce Delays : (software selectable) 0, 0.6, 2.5, 10 ms
Measurement Rate : up to 500 per second per channel, 1000 per second total
Accuracy : 0.1%
Analog Input
Low-level :
50 mV typical (100 mV max) p-p sine wave @ 10 Hz to 100 kHz
Any edge of 50 (100 max) mV amplitude and 5 V/s rate.
Input impedance: AC-coupled (0.33 µF), in series w/ 20 K
Ω
to ground.
15 mV hysteresis.
High-level :
0.75 V typical (1.25 V max) p-p sine wave @ 10 Hz to 100 kHz
Any edge of 0.75 V (1.25 V max) amplitude and 50 V/s rate.
Input impedance: AC-coupled (0.33 µF), in series w/ 20 K
Ω
to ground.
250 mV hysteresis.
Maximum Input Voltage : 30 Vrms (84 Vp-p)
Low-Pass Filters : (hardware selectable) 30 Hz, 300 Hz, 100 kHz
Digital Input
TTL-Level : 0.001 to 960 kHz.
Input Impedance : 27 K
Ω
pull-up to +5 V || 50 pF
V Low (“0”) : 0.8 V typ, 0.5 V min
V High (“1”) : 1.6 V typ, 2.1 V max
Hysteresis : 400 mV min
Pulse Width (high or low): 520 nsec min.
Maximum Input Voltage : -15 V to +15 V