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 21 

standard serial data communication protocol designated as RS232C. Refer to appendix 
A for a technical description of the RS232C interface as it relates to the 

Pachette 2

. 

Once the printer interface is installed, a serial printer and interface cable must also be 
purchased before a hardcopy of pachymetry data can be obtained. A compatible printer 
and interface cable can either be purchased from DGH Technology, Inc. or the 
operator can supply them. DGH currently offers the SII DPU-414 thermal printer by 
Seiko Instruments, Inc. for use with the 

Pachette 2

. Please contact DGH before 

attempting to interface your own printer. DGH maintains a list of printers that have 
already been tested for compatibility with the 

Pachette 2

. 

The intent of this section is to provide the operator with information for using the SII 
DPU-414 printer with the 

Pachette 2

. Where applicable, the SII DPU-414 User’s 

Guide that was shipped with the printer will be referenced. 

Configuring The Printer Interface 

Before the 

Pachette 2

 can send any data to a serial printer, the printer interface 

parameters must be properly set. The interface must first be enabled, and then the baud 
rate (or data transmission rate) must be set to match the RS232C interface on the 
printer. Once configured, it is not necessary to repeat this procedure since the 
parameter settings are stored in non-volatile memory. However, if it becomes 
necessary to reset or check the initial configuration, use the procedure below to access 
the configuration menu and gain access to the printer interface parameters. 

Note: 

When the SII DPU-414 printer is purchased along with the printer interface 

option, the interface will already be configured by DGH Technology, Inc. However, if 
no printer is purchased with the printer interface option, then the operator must 
configure the interface when a printer is connected to the 

Pachette 2

.  

1.  Plug the probe into the front panel, turn on the unit, and wait until the unit is 

ready to take a measurement.  

2. Press 

the 

CONFIG

 key and the display will briefly indicate: 

PACHETTE 2 

CONFIG 

and then the first configurable parameter will be displayed. 

3. Press 

the 

ENTER

 key repetitively until the display indicates: 

 

Summary of Contents for DGH 550

Page 1: ...0 PACHETTE 2 ULTRASONIC PACHYMETER OPERATOR S MANUAL SYS PA52 REV 06 2003 DGH Technology Inc Sales 800 722 3883 110 Summit Drive Suite B www pachymeter com Phone 610 594 9100 Exton PA 19341 www dghkoi...

Page 2: ......

Page 3: ...ption 20 IX D Data Transfer Interface Option 24 IX E IrDA Interface Option 26 X CARE AND MAINTENANCE 27 X A Cleaning Instructions 27 X B Transport and Storage Conditions 27 X C Operating Conditions 27...

Page 4: ...e III B DGH 550 Back Panel 5 Figure III C Electronic CalBox 6 Figure XII A Wiring diagram for the SII DPU 414 printer interface cable 36 Figure XII B Wiring diagram for a typical PC interface cable 36...

Page 5: ...here on the cornea Measurements are not dependent upon patient fixation Ease of use The corneal thickness measurement may then be used in many different ways including Lasik and glaucoma screening Las...

Page 6: ...stance over a large viewing angle and in all lighting conditions Proven measurement algorithm which yields accurate reproducible measurements in a fraction of a second Ultra Portable Compact and light...

Page 7: ...ement data and or configuration parameters to the operator Keys 2 Used to review measurements or to program options and numerical values presented on the display The key is also used to enter the CalB...

Page 8: ...s After the menu has been activated the keys can be used to select the desired value for the current configuration parameter Parameters values are then chosen by pressing ENTER Probe Connector 7 Front...

Page 9: ...550BPLCE INPUT 100 240V 50 60Hz 0 3A REPLACE FUSES AS MARKED T0 5A 250V Model DGH 550 SN XXXXX 0459 3 Figure III B DGH 550 Back Panel Fuse Holder 1 Location of AC input fuse s If a fuse needs replacin...

Page 10: ...ss the CalBox button until the power LED lights and the will begin taking measurements If the LED fails to light or goes out before the test sequence is completed or if POOR APPLANATION is displayed r...

Page 11: ...performs an internal self test function 5 When the power up sequence is finished the display will indicate Avg of 0 0u Std Dev 0 0u The Pachette 2 is now ready to take corneal measurements If any def...

Page 12: ...On The Configuration Menu A complete list of all the possible parameters on the configuration menu is given in Table 1 The unshaded sections of this table identify parameters that are accessible on th...

Page 13: ...e probe is properly applanated to the cornea Press ENTER to confirm your selection 6 If no options have been installed the unit will save the current configuration and then exit the configuration menu...

Page 14: ...10 7 Pachymetry measurements may now be taken Refer to section VI for a detailed description of the proper method for obtaining measurements...

Page 15: ...OF BIAS 100 1 to 199 Selects the percentage used to calculate biased measurements Mapping GOOD MEAS DELAY 1 0 sec 1 0 to 9 5 seconds Period of time before the unit will automatically store the current...

Page 16: ...1 Perform the Power Up Sequence as described in section IV 2 Select the number of measurements to be obtained by accessing the configuration menu as described in section V 3 Position the Pachette 2 f...

Page 17: ...To display and review each measurement and the standard deviation if enabled use the or keys If any measurement seems questionable to the operator it can be erased from memory by pressing the DELETE...

Page 18: ...t the factory If the probe quality is satisfactory the Pachette 2 is ready to take measurements and the operator is unaware that the self test has occurred However if the probe quality is not satisfac...

Page 19: ...y and turning on the Pachette 2 3 After power up is completed the display will indicate CALBOX MODE on the top line and 1 0u on the bottom line 4 Disconnect the probe and connect the CalBox to the Pac...

Page 20: ...a hard copy of pachymetry data 4 Data Transfer Interface Option A serial RS232C interface that allows pachymetry data to be transferred to a personal computer for the purpose of archiving display for...

Page 21: ...and the display will briefly indicate and then the display will indicate 9 Press the or keys to change the operational mode from Continuous Avg to Mapping Press the ENTER key to confirm your selectio...

Page 22: ...ction At this point the Pachette 2 will either exit the configuration menu or advance to the next configurable parameter More parameters will only be available if other options have been installed Not...

Page 23: ...on 3 With the patient in supine position and visualizing a fixation spot on the ceiling position the tip of the probe onto the cornea at the location the operator has defined as position 1 Once the pr...

Page 24: ...to appear on the display and then retaking the new measurement Any measurement that is suspect may also be erased by pressing the DELETE MEAS key 7 All measurements remain in memory until the CLEAR k...

Page 25: ...e the Pachette 2 can send any data to a serial printer the printer interface parameters must be properly set The interface must first be enabled and then the baud rate or data transmission rate must b...

Page 26: ...r disable the Notes box on the printout 8 Press the ENTER or CLEAR key to save and exit the configuration menu Connecting The Printer To The Pachette 2 And Loading Paper 1 Turn off the power switch on...

Page 27: ...ote If the printer has been previously loaded with paper the printer will automatically be brought on line when the power switch is turned on Obtaining A Printout 1 Verify that the printer is on line...

Page 28: ...of the particular computer Refer to appendix A for a technical description of the RS232C interface as it relates to the Pachette 2 Software is also required to implement the data transfer All softwar...

Page 29: ...u 3 above select Disabled in step 4 and then press ENTER 6 Use the or keys if necessary to select a baud rate for the Pachette 2 9600 is the default setting that matches the baud rate of the computer...

Page 30: ...appropriate computer software program that is capable of communicating with the Pachette 2 through the designated COM port 2 Adjust the computer COM port settings to the following parity none data bi...

Page 31: ...bjected to intense heat As a general rule the above cleaning instructions are sufficient to disinfect the probe in ordinary use Do not scratch or chip the conical probe tip which makes contact with th...

Page 32: ...ed free of charge F O B our factory by DGH DGH reserves the right to make changes in the design and material of Equipment without incurring any obligations to incorporate such changes in Equipment alr...

Page 33: ...ghkoi com When contacting us please provide the model and serial number for the unit These numbers are located on the back panel DGH Technology Inc TECHNOLOGY INC 110 Summit Drive Suite B Exton PA 193...

Page 34: ...the eye or other tissue with the system activated except when making a measurement Do not make unnecessary measurements XI C Ultrasonic Intensities The Pachette 2 has only one mode and ultrasonic inte...

Page 35: ...rticular transducer may vary from this value The tissue calculations above were done with the measured frequency of the transducer used for the tests XI D Biometric Measurement Capabilities The DGH 55...

Page 36: ...ystem complied with the radiated and conducted emissions requirements throughout the test Tests for power harmonics and flicker were performed Tests were performed according to EN61000 3 2 1995 Harmon...

Page 37: ...33 IEC 61000 4 11 1994 Voltage Dips and Interrupts The system complied with the radiated and conducted immunity requirements throughout the test...

Page 38: ...Pachette 2 on pin 2 of the interface A third signal active in the interface is Data Terminal Ready DTR This is an input to the Pachette 2 that when active indicates that the interface is ready to acc...

Page 39: ...s cable from a computer outlet store For reference the wiring diagrams for both of these cables are given in Figure XII A and Figure XII B Note If a printer other than the SII DPU 414 is used with the...

Page 40: ...12 13 14 15 16 17 18 19 20 21 22 23 24 25 Figure XII A Wiring diagram for the SII DPU 414 printer interface cable DB 25 FEMALE DGH 550 PACHETTE 2 IBM PC COM PORT PC INTERFACE CABLE 1 FGND 2 RxD 3 TxD...

Page 41: ...ng the velocity used to calculate all measurements The second number contains two digits and it represents the total number of measurements obtained The next four digit number represents the total ave...

Page 42: ......

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