Electronic Devices, Inc. - Computer Controlled Depth Sounder Test Set DSTS-5A/2

DSTS-5A/2^©
EDI's Computer Controlled Depth Sounder Test Set

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Made to work equally well in the engineering lab or on the production line, the DSTS-5A/2 is a great aid for designing depth sounders and will also efficiently test them as part of the production process. Controlled via the RS-232 interface and having no external controls, the DSTS-5A/2 is ideal for final test of depth sounders after manufacture. Integration into an existing automated test setup is simple because the DSTS-5A/2 responds in the same way as a DSTS-4A with the EAB-3 option installed.

[Features] [Additional Information] [Specifications] [Options]

Features:

Electronic attenuator with increased range of 86 dB
Dual frequency operation
Automatically tracks and responds to dual-frequency, alternate-pulse depth sounders accurately
Individual control of bottom and fish echo width, amplitude, and duration for testing a sounder's ability to mark fish
Depth resolution of 1 mm with a maximum depth jitter of less than 1 millimeter. Maximum depth is 99,000 feet or 30,000 meters
Direct digital synthesis (DDS) for rapid and precise control of the reply frequency on a pulse-to-pulse basis
Alternate menu with the same RS-232 command structure as the DSTS-4A for plug and run compatibility with existing DSTS-4A test setups
Software for controlling and updating the DSTS-5A/2 is included
Integrated boot loader for software updates via e-mail
Two-year calibration cycle does not require disassembly of the unit. Calibration is performed using RS-232 and a terminal or the supplied software. Required adjustments are internally stored in eeprom
The DSTS-5A/2 comes with a one-year warranty and a 30-day money back guarantee

New Control Application

Try the new control application for the DSTS-5A/2.

Download DSTS-5A/2 Control Application Zip File Here

More about the DSTS-5A/2

The included Windows program gets you up and running quickly. Use the sliders to set the depth, amplitude, frequency and width of the reply pulse. The input pulse parameters from the depth sounder are displayed on one line and the reply pulse burst parameters are displayed on the next line. Sliders control the frequency, width, depth, and amplitude of the reply echo. As shown in the screen shot below, the depth sounder under test is generating a pulse burst with a frequency of 199.99 KHz, a width of 125 uS, a period of 90 mS and the amplitude is 669 volt peak-to-peak. The reply echo generated by the DSTS-5A/2 has a frequency of 199.99 KHz, a width of 150 uS, a depth of 25 feet and the amplitude is 50 millivolts RMS. Note that the Auto box is checked for both frequency and width. The Auto-frequency mode makes the DSTS-5A/2 reply at the same frequency as the depth sounders output pulse burst. The Auto-width mode tracks the input width on a pulse-to-pulse basis and adds 20% pulse stretch. The default mode of operation is to have both Auto boxes checked so a realistic echo is generated. Some depth sounders will not operate correctly unless the Auto-width mode is checked. These sounders transmit a varying pulse width and check the received pulse width in order to reject noise.

For more complex tests, such as a depth sounders ability to see a fish just above the bottom, a terminal program must be used. A simple terminal program is included with the DSTS-5A/2.

By typing simple commands such as “D1234”, the depth of the fish echo can be set. Additional commands set the amplitude, width, and duration of the fish echo. The duration of the fish echo is set for the number of times the DSTS-5A/2 will generate or not generate a fish echo after the depth sounder transmits. See the command list below for more information.

Command List of the DSTS-5A/2

LETTER FUNCTION

a Sets width Auto Track mode on. Turns off when a width is sent to the DSTS.
A Sets frequency Auto Track mode on. Turns off when a frequency sent to the DSTS.
b Sets normal (pulsed output) mode of operation.
B Sets output signal to continuous wave (CW mode).
cf Sets the calibration to feet.
cF Sets the calibration to Fathoms.
cm Sets the calibration to meters.
dxxxxxx Sets the bottom depth in tenths of the selected units, feet, meters, or fathoms.
Dxxxxxx Sets the fish depth in tenths of the selected units.
e Turns off the fish echo mode. Returns only bottom echo.
exx The fish echo will be off for xx pulses from the depth sounder.
E Turns on the fish echo mode. Returns two echoes, fish and bottom.
Exx The fish echo will be on for xx pulses. Use with exx for repeating fish.
fxxxxx Sets the reply frequency in 10 Hz units.
l Sets the bottom echo reply level in .3 dB steps, 0 to 255 max. 255 = 50 mv rms.
L Sets the fish echo reply level in .3dB steps, 0 to 255 max. 255 = 50 mV RMS.
p Inserts additional 10 dB attenuation to reply level.
P Removes additional 10 dB attenuation. Default condition.
~~~ Resets the DATA-5A hardware and software.
s Stops auto data transmission from occurring. Data only sent when 'enter' is pressed.
S Start auto data transmission. All input/output parameters are sent.
t Test mode. Steps attenuator , sweeps frequency and voltmeter calibration.
wxxxxx Sets the bottom echo width in microseconds.
Wxxxxx Sets the fish echo width in microseconds.
x Enters the -4A mode of control.
? Sends a simple menu of all commands to the terminal.

SPECIFICATIONS:

Parameter	Range	Resolution	Accuracy
Input frequency	2.0 to 1200 KHz¹	10 Hz	± .02% ±20 Hz ²
Input width	10³ to 20,000 uS	0.1 uS	± .02% ±2 cycles
Input period	10 to 9999 mS	1 mS	± .02% ±1 mS
Input voltage	50 to 2500 Vp-p	2 Vp-p	± 10% Vp-p ±5%⁴
Min input level	50⁵ Vp-p	N/A	± 10 Vp-p
Output frequency	2.0 to 2000 KHz	10 Hz	± .01%
Output width	10 to 20,000 uS	0.1 uS	± .02%
Echo depth	1 to 100,000 ft/mt/fa	0.1 unit	± .01%
Output level	2 to 50,000 uV	0.3 dB	± 1.0 dB ⁶
Vprop ft, fm	4800 to 5000 f/s	1 f/s	± .01%
Vprop mtrs	1460 to 1530 m/s	1 m/s	± .01%
Depth jitter: Less than 50 nSec maximum at 1 second depth delay.
Baud rate: 9600, 8 bits, no parity, no handshake
Power requirements: 9 Vdc @ 200 mA
Size and Weight: 6" W by 7"D by 3.5"H. Shipping Wt. 2.1 Lbs.
WARRANTY INFORMATION Unit will be repaired free of charge for one year from date of purchase providing there is no water damage or other evidence of improper use or handling. Purchaser must ship unit prepaid to address below; EDI will pay the return freight. For repair, please enclose a note describing the problem and ship to: ATTN: Service Department BBG Incorporated 1708 South Park Court Chesapeake, VA 23320 USA Phone: 1-757-366-9211
Notes: 1 - Usable to > 2.0 Mhz with reduced amplitude accuracy. 2 - Specified for pulse widths greater than 99 uS. 3 - Input pulse must contain at least 4 cycles. 4 - Measured at 200KHz, 400Vp-p with a 325 uSec pulse width. 5 - At 50 Khz. Approximately 200 Vp-p at 1 MHz. 6 - At 800 kHz, -2dB at 1200 kHz.

Please E-Mail edisales@bbginc.com or telephone (757) 366-9211 (within the USA) for more information on EDI's product design services.

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Electronic Devices, Inc.

1708 South Park Court, Chesapeake, VA 23320. Phone (757) 366-9211

Cat DSTS-5A01/98