© GeoAcoustics 2008

Timer 2
Versatile Timer & Trigger-Pulse Module

The Timer2 is a highly reliable, all-purpose timer box and trigger pulse generation system providing asynchronous key pulses on two independent output channels.

The Timer2 is well suited for a wide range of applications where two independent systems need to be run at different trigger rates.  Applications such as Side Scan together with Sub Bottom Profiler or two differing SBPs such as GeoChirp and Boomer, can be operated  simultaneously.

This unit allows asynchronous triggering on two channels, where the timing is all performed by dedicated microcontrollers.

The Timer2 is intended to meet the needs of customers who wish to generate up to two key signals with a predetermined repetition rate, or to delay and divide an externally generated signal.

The Timer2 can be used to delay an internally generated or externally received (TTL/CMOS) key pulse by any multiple of 1ms.  Either rising or falling edges can be selected as the trigger point.
To use the Timer2 as a key pulse generator an internal repetition rate can be set with a time between pulses at any multiple of 1ms.

Signal Specifications

Key pulse out: CMOS or TTL compatible.
Key input: CMOS or TTL compatible. Isolated
Modes: Internal/delayed external
Key delay ms: Determined by selection control
Rep rate ms: Determined by selection control
Divider:  Determined by selection control

RS 232 serial port available to upload Timer2 firmware upgrades or custom firmware.
Possible applications are (DGPS) PPS simulation, specialist timing/trigger regimes, pulse timing verification, etc.

User Friendly and Reliable

The Timer2 unit incorporates a liquid crystal display which shows the operating status at all times.  On switch-on the screen declares the model number and version of the unit prior to displaying the main menu and settings.  The LCD array is split into two easy to read horizontal bars that show the status of each  of the inputs and outputs. 

The status of these can be changed by using the selection control.  This easy to use function is operated by simply pushing the button to select the next item and rotating the control to change its status.  This switch is speed sensitive so turning it faster will result in larger value changes.

Features

• Universal mains powered

• Lightweight, small sized format

• Easy to use with an LCD display and a single selection control

• Two independent outputs

• Each output can be triggered either internally or from one of two inputs

• each output can be divided and delayed with respect to the source trigger

• Each output can be configured for pulse width

• Each output can be configured for polarity

Data Sheets & Downloads