General Features
- 8 channels
- Each channel can be used as either analogue or frequency input
- Up to 75 Hz sampling rate
- Synchronised sampling on all channels
- Separate excitation circuit for each channel
- Fully compatible with T-MON software
Input Specification
- 8 channels with simultaneous sampling
- Each channel can be used as either frequency or analogue input
- IP66 circular connectors (option of screw or sprung terminals)
- Differential inputs
- >5000 M# input impedance
- 50 V continuous maximum safe input
- 100# internal 0.1% precision sense resistor for current loop signals
Analogue Channel Specification
- Programmable gain for each channel up to 8000 (calibrated for gains up to 1000)
- 16 gain settings from product of [ 1 2 4 8 ] and [ 1 10 100 1000 ]
- 0.1% of full scale accuracy
- ±5 V range programmable offset for each channel
- 3 mV resolution
- 0.1% of full scale accuracy
- Temperature drift 0.2 mV/°C
- Programmable anti-aliasing filter
- 5 to 50 Hz range, set collectively for all channels
- 5th order Bessel filter
- Amplifier temperature drift
- 30 ppm/°C of gain (k=1), -100 ppm/°C of gain (k=1000)
- 0.01 mV/°C offset (k=1), 0.6 mV/°C offset (k=1000, at output)
- Better than 0.1 % linearity
- Better than -90 dB common mode rejection ratio
- Better than -100 dB cross talk between any channel
- <0.01% rms of full scale noise level (gain1000)
Analogue to Digital Converter
- 16 bit resolution
- ±10 V range. Full dynamic range available for gains up to 1000
- Sample and hold for each channel
Frequency Inputs
- Maximum frequency 2 kHz
- 5 to 36 V input pulses
- Schmidt trigger. Max On Voltage = 4.2V, Min Off Voltage =0.9V
- Accuracy better than 0.05 %
- Full scale range specified by user (1 to 2000 Hz)
- Resolution 15 bit over user specified range
- Transient protection on all connections
- -10 to 50 °C temperature operating range
- Temperature stability 10 ppm
Excitation Supply
- Programmable regulated voltage for each channel from 2.5 to 10 V, up to 55 mA
- ±0.1 % accuracy
- 3 mV resolution
- Excitation Temperature Drift 0.2 mV/°C
- 12 V unregulated mode, up to 55 mA per channel
- Short circuit protection, maximum current 80 mA per channel
- 24V unregulated supply available on connector (fused at 0.5 A for all channels)
Computer Interface
- RS232 or RS422 at 19,200 Baud
- Half duplex
- Synch pulse (if used)
Modes of Operation
- Sample from external pulse
- Sample from byte command
- Sample from internal clock
Configuration
- All settings programmable via serial interface
- Protocol provided
- All settings are retained after power loss
- Can be used as rotor speed and position unit with change of EPROM
Miscellaneous
- Internal temperature and voltage checks
- Self check at power up
- LED indicators for Power, Transmit, Receive and Synch Pulse
Power Requirements
- Input voltage range 18-36V DC
- Maximum VA (excitation circuits not used) 13 VA
- Maximum VA (all excitation circuits at full load) 17.5 VA
- Fully isolated internal supplies
- Self resetting fuse protection
- Reverse polarity protection
Physical & Environmental
- 270 mm long, 130 mm wide, 65 mm high (excluding connectors)
- 3.4 kg weight
- IP66 enclosure
