TXU-30

Multi-function GeophysicalCurrent Source•

Compact, portable•

Uses 200–240V, 50Hz, 60Hz, or400Hz, 3-phase motor generator CSAMTPermanently synchronized toGPS time ±0.5µs•

IPTDEM,FDEM•

Linear ramp better than
5µs/ampere (turnoffcharacteristic for TEM)•For all common EM geophysical techniques

Induced Polarization: Frequency andTime Domain, Phase and Spectral IP
Controlled Source Audio MagnetoTellurics in scalar, vector, and tensor
modes
All common Time and Frequency Domain
Electromagnetics functions

Specification: September 2006. Subject to change without notice.

TXU-30 Multi-function Current Source
The most advanced
controlled current source
available for electrical methods
geophysical exploration, the TXU-30 iscompact and portable. It combines
substantial output power (20kW) withadvanced electronics and GPStechnology.
Simplified MG Requirements
The new design eliminates
dependence on specialized motor
generators. Now, you can buy or rent a
suitable MG from any convenient local
supplier, and that means—• no more service and spare parts
supply headaches.
• possible capital cost savings.
• reduced shipping costs. (Over thelife of the product, this can add up toconsiderable savings!)
Advanced Controls—Easy to Use
Advanced microprocessor control
provides superior performance acrossthe board. Large, bright LEDs display

instrument status and critical values.
Simple, straightforward controls makeit easy to adjust all operating
parameters within allowable limits.
Climate-Controlled Exploration!
Use the cable-linked remote control
panel to operate the TXU-30 from up to30m away. Manage your EMtransmissions in the comfort of aheated or air-conditioned field truck
cab! You’ll also appreciate being able
to talk with the rest of the crew bymobile phone or radio without having tofight the noise of the MG.
High S/N Ratios—Precision
Synchronization
In highly resistive areas in the past,
users have relied on dangerously highvoltages in an attempt to achieve anadequate signal-to-noise ratio at thereceiver. The TXU-30's built-in GPS(Global Positioning System) satellitesynchronized timing control, coupledwith companion GPS-synchronizedreceivers, solves this problem.

Because the entire system issynchronized, receivers can maintainproper registration while stacking evenextremely weak signals. The signals
can be stacked as long as necessary
until the S/N ratio is acceptable.
Wired or Wireless Data Links
The TXU-30 continuously saves timeseries records of its output current andvoltage on a removable 512MB flash
memory card. This information,required for deconvolution calculationsin Spectral IP, can be transmitted to acompanion receiver system over either
a wireless or an optional cable link.
Alternatively, the data on the flash
memory card can be uploaded to thepost-processing computer via a highspeed, low-cost interface.

Summary Specifications
Dimensions &Weight, transmitter

52cm W x 44.5 cm H x 60 cm D
52.5kgDimensions &Weight, controller

47cm W x 15cm H x 36.5cm D
6.5kg

Environmental

Operating: –20°C to 45°C

Input Voltage

200–240V at 50/60/400Hz

Frequency Range

256s to 9600Hz(Frequency Domain)
128s to 30Hz
(Time Domain)

Storage: –35°C TO 50°C

Timing Control

GPS synchronized ±0.5µs

Maximum Power
Output20kW at 25°C, sea level

User Interface

Cable-connected control panel

Duty Cycle

100%, 50%, 33%, 25%

Efficiency

90% at full power

Fault Protection

Input voltage out of range

Current Range

1–40A, 0.5–20AVoltage Range

25–1000V

Output voltage out of range
Output current out of range
Power stack temperature high© 2006 Phoenix Geophysics Limited

PHOENIX Geophysics Limited
3781 Victoria Park Avenue, Unit 3
Toronto, ON, Canada M1W 3K5
www.phoenix-geophysics.com: +1 (416) 491-7340

: +1 (416) 491-7378: mail@phoenix-geophysics.com

Specification: September 2006. Subject to change without notice.