Twilight Tobias IQ150 User manual

Densitómetro IQ150, Tobbias
TB-IQ150

Instruction Manual
MEASUREMENT FUNCTIONS:
IQ200 Densitometer
Density 0
Density Difference 0
Dot Area 0
Dot Gain 0
Trap 0
Hue Error 0
Grayness 0
Contrast 0
T H E T O B I A S
IQ150
IQ200
COMPUTI G PORTABLE REFLECTIO
DENSITOMETERS
MEASUREMENT FUNCTIONS:
IQ150 Densitometer
0Density
0Density Difference
0Dot Area
0Dot Gain

Instruction Manual
T H E T O B I A S
IQ150
IQ200
COMPUTI G PORTABLE REFLECTIO
DENSITOMETERS
S0172/004.19
50 Industrial Drive
Ivyland, PA 18974-0347 USA
Phone [phone]
Toll-free 800-877-3367
Fax [phone]
E-mail [e-mail]

TABLE OF CONTENTS
Introduction .................................. 1
MENU 1
ensity [ ENS] (IQ150 & 200) ...............2
ensity ifference [ IFF] (IQ150 & 200)....3
Setup [SETUP] (IQ150 & 200)................ 4
Print/Transmit Function (IQ150 & 200) .......6
MENU 2
ot Area [AREA] (IQ150 & 200) .............. 7
ot Gain [GAIN] (IQ150 & 200) .............. 8
Trap [TRAP] (IQ200 only)................... 9
MENU 3
Hue Error [HUE] (IQ200 only) .............. 10
Grayness [GRAY] (IQ200 only) .............. 11
Print Contrast [CONT] (IQ200 only)........ 12
FAQ ............................................ 13
Source Lamp Replacement .................... 14
Battery Pack Replacement ................... 15
Error Messages ............................... 16
Specifications ............................... 18
Parts List.................................... 18
Appendix: RS-232 Primer .................... 19
Connections to a Computer....................21
Slope Calibration............................22

1
Introduction
The Tobias IQ is a portable, computing reflection densitometer. Density
readings are displayed on a large, easy-to-read LCD screen, which
displays a prompt line and a legend controlled by soft keys. There are
three available menus, which are selected by the [MENU] key. Each menu
offers several measurement functions operated by the three soft keys. The
[MENU] key is used to display the menu choices at any time (see list
below). The IQ turns off automatically after 90 seconds to conserve the
battery. Press [MENU] to restore the last display. In this manual the
brackets [ ], represent the menu key and soft keys; words in quotes stand
for on-screen messages, i.e. "REF".
MENU 1 • Density [DENS] (IQ1 0 & IQ200)
• Density Difference [DIFF] (IQ1 0 & IQ200)
• Setup [SETUP] (IQ1 0 & IQ200)
MENU 2 • Dot Area [AREA] (IQ1 0 & IQ200)
• Dot Gain [GAIN] (IQ1 0 & IQ200)
• Trap [TRAP] (IQ200 only)
MENU 3 • Hue Error [HUE] (IQ200 only)
• Grayness [GRAY] (IQ200 only)
• Print Contrast [CONT] (IQ200 only)
•
Note: The IQ will maintain calibration for weeks at a time; however, it is
recommended that the unit be calibrated daily for greatest accuracy. The calibration
routine is described under Setup in M NU 1.

2
2. Density [DEN] (IQ1 0 & 200)
To enter Density mode 1. Press [MENU] until "MENU1" is
displayed.
2. Press [DEN].
To read Absolute Density 1. Be sure "AB" is on the prompt line. If
not, press [ABS]. This mode does not
compensate for the paper density.
2. Read sample. The primary filter is
shown in large letters, the secondary
colors are shown smaller.
To read Relative Density 1. Be sure that "RF" is on the prompt line.
If not, press [REF]. This allows you to
"ZERO" on your paper and should be
done for each job.
2. Read sample. The primary filter is
shown in large letters; the secondary
colors are shown smaller.
To change Base values 1. Press [BASE].
2. Read the base.
To send the information to
a printer or computer
Press [PRINT].

3
3. Density Difference [DIFF] (IQ1 0 & 200)
This function allows you to set a standard house reference density value
for each color and measure the differences from them across the sheet.
To enter Density
Difference mode
1. Press [MENU] until "MENU1" is
displayed.
2. Press [DIFF].
To change the reference
value
1. Read sample.
2. Press the [SAVE]. Readings will be
compared to that standard.
3. To adjust, press [REF], then [+] or [–]
until correct. Press [SAVE] to save and
go on to next color. When all are
adjusted, press [SAVE] to save and exit.
Press [MENU] to exit during routine.
To find Density Difference
Read the sample. The density difference
and reference values will be displayed.
To send the information to
a printer or computer
Press [PRINT].