ANALOG SPECIFICATIONS

NUMBER OF CHANNELS
- 1 to 16

DYNAMIC INPUT RANGE
- ± 10 volts

FREQUENCY RANGE
- DC-150 kHz, (1 channel)
- DC-10 kHz, (up to 16 channels)
- Customised configurations on request

INPUT IMPEDANCE
- Approximately 10 megohms at low frequencies

SIGNAL PATH
- Each dual analog board has separate high/low signal paths. Specialised analog boards available for TDEM and other functions

POWERLINE FILTERING
- The signal path has an 11/21-notch, processor-tunable powerline filter for both even/odd harmonics

OTHER FILTERING
- High/low pass filters; gain; offset adjustment; programmable anti-alias filters; all under processor control

GAIN/DC OFFSET
- Automatic or manual control, range of 0.25 to 4096. Low range path has processor controlled DC offset control, range: ± 5 volts

CALIBRATION
- Automatic self-calibration, under processor control, with built-in calibration/test signals

SENSITIVITY
- Sufficient for stand alone controlled source applications; for natural signal applications (MT or AMT sensor processor unit(s) required

DIGITAL SECTION

PROCESSOR/CPU BOARD
- 32 bit processor and math coprocessor, programmable interrupt controller with 16 request lines. Multibus interface, DIN connectors. Separate coprocessor for keyboard and display. On board real time clock.

MONITOR FIRMWARE
- Monitor firmware interfaces to National 32000 series software development tools. Also provides run time environment, terminal handler, debugger execute module, floating point support module and interrupt handler.

CPU BOARD MEMORY
- 256 Kbyte static RAM + 512 Kbyte ROM or 512 Kbyte RAM + 64 Kbyte ROM.

ADDTIONAL MEMORY
- Max. 40Mb RAM + 1Mb EROM. Optional expansion to 240 Mb of non-volatile solid-state memory

SERIAL I/O
- Two RS-232 ports with programmable baud rates up to 115 kbaud throughout.

PARELLEL I/O
-16 bit port with max. 0.5 MHz transfer rate.

TIMING
- Internal crystal clock; processor-controlled resetting for synchronised operation with other V-5's. Optional external precision clock input.

A-D CONVERSION
- 16-bit resolution, 500 kHz conversion rate.


WEIGHT
- Approx. 13.0 kg

DIMENSIONS
- 32 x 36 x 27 cm high

CASE
- Resilient, tough PVC compound

CONNECTORS
- Side-mounted, allowing foul-weather operation with closed lid

OPERATING TEMPERATURE
- -10°C to +50°C (-20°C with LCD heater)

STORAGE TEMPERATURE
- -50°C to +60°C

HUMIDITY
- Splashproof (may be operated in light precipitation.)

SHOCK AND VIBRATION
- Suitable for transport in bush vehicles

BATTERY
- Provision for external 12 V battery operation 12 V/55 Ah rechargeable battery will provide nominal 24 hrs continuous operation at +20°C

SIGNAL STRENGTH
- Four multi-pin connectors for up to 16 analog inputs. Each input may be internally re-routed for maximum flexibility in mapping input channels to signal processing channels (optional)

REMOTE DEVICE STATUS
- Via special purpose opto-isolated I/O link.

PRECISION CLOCK SIGNAL
- Optional external precision clock or GPS clock input

ANALOG METERS
- 8 analog meters, switch selectable to Hi/Lo signals

DISPLAY
- 40 char. x 8 lines LCD (256 x 64 dot graphics)

ANALOG
- 16 outputs for signal monitoring or analog recorders etc. ± 5 V range

EXTERNAL ISOLATED TRANSMITTER DRIVE
- Via special purpose isolated RF link

REMOTE DEVICE CONTROL
- Via special purpose opto-isolated I/O link