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GL450 Quick Start Guide

This Quick Start Guide is an easy operation guide that provides explanations on 
preparations prior to measurement, basic measurement procedures, and menu operations, 
for people who want to start measurement operations right away. Please refer to the 
User's Manual for more detailed explanations.

Checking the Outer Casing

After unpacking, check the GL450's outer casing before use to make sure that there are 
no surface scratches or other flaws such as stains or dirt.

Checking the Accessories

• Quick Start Guide: 1

• CD-ROM: 1

• LCD protector: 1

• AC cable/AC adapter: 1 set

• Screwdriver for input terminal unit: 1

• 10-channel input terminal unit: 1

Checking the AC Line Frequency

Set the AC line frequency (50 Hz or 60 Hz) in the "OTHR" menu. Using the appropriate set-
ting is effective in eliminating line noise.

Connecting to a PC (the PC is not supplied by Graphtec)

• OS: Windows 2000/XP

• Memory: At least 256 MB 

• CPU: Pentium 4, 1.7 GHz or higher

GL450-UM-851

Part Names

Connecting the Logic Alarm Cable

Connect the round connector of the logic 
alarm cable (B-513, option) to the logic 
input /alarm output terminal on the GL450.

Connecting to an AC Power Supply

Connect the output side of the AC adapter 
to the connector on the GL450.

Connecting the Grounding Cable

Using the screwdriver provided as a 
standard accessory, press against the 
button underneath the ground terminal 
while connecting the grounding cable to 
the GL450. Connect the other end of the 
cable to ground.

Logic alarm cable (B-513)

Terminal layout on the top part of the unit

Input terminal unit 1

Input terminal unit 2

CH6

CH7

CH8

CH9

CH10

CH1

CH2

CH3

CH4

CH5

CH6

CH7

CH8

CH9

CH10

CH1

CH2

CH3

CH4

CH5

+ -

b

Terminal configuration

+ -

+

-

Voltage

+ -

Thermocouple

+ -

b

Resistance temperature
 detector (RTD)

Current measurement

Signal 

source

Amp Input Terminal Layout

CH GROUP

RANGE

/

SPAN

POSITION

TIME

/

DIV

QUIT

MENU

LOCAL

ENTER

DISPLAY

SAVE

REVIEW

START

STOP

CURSOR

(3) TIME/DIV key

(6) MENU key

(2) RANGE/SPAN/POSITION key

(5) QUIT key

(1) CH GROUP key

(8) DISPLAY key

(10) SAVE key

(4) START/STOP key

(9) REVIEW key

(7) Direction keys

(11) CURSOR key

(1) CH GROUP key 

The [CH GROUP] key selects the channels in 10-channel groups. Press the key to move 
to the next group of 10 channels. The number of channels varies according to the type of 
input terminal unit installed.

GL450 Main Unit

Control Panel Keys

Grounding cable

Always connect the GND terminal and refer to 
the safety precautions. The GL450 must be 
grounded even when connected to other 
devices and sharing a common ground level.

CAUTION

(2) RANGE/SPAN/POSITION key  

These settings can be made or changed for each channel individually, even while the 
GL450 is in the 'free running' status (not capturing data) or performing measurement.

(4) START/STOP key  

Press the [START/STOP] key to select the START status (awaiting trigger). Press it once 
again to select the STOP status (free running).

(8) DISPLAY key  

Press the [DISPLAY] key to switch through the measurement modes.

(11) CURSOR key  

When data is being replayed, press the [CURSOR] key to switch between Cursor A and 
Cursor B.

(10) SAVE key  

Press the [SAVE] key to save data, to make a copy of the screen, and to save the data 
between cursors (only during a data replay operation).

(9) REVIEW key  

If the [REVIEW] key is pressed during the Free Running 
status (when data is not being captured), the captured 
data is replayed.
If the [REVIEW] key is pressed during measurement, 
past data is displayed together with the data currently 
being measured in a dual-screen format.

(5) QUIT (LOCAL) key  

Press this key to return the display to its former settings. It is also used to display 
operations within a setting menu. (If the GL450 is in Remote status, press this key to 
cancel the key lock status.)

(6) MENU key  

Press the [MENU] key to switch through the detailed setting menus.
AMP (Amplifier settings): This menu is used to make the Input, Range, Filter settings, etc.
ANNO (Annotation settings): This menu is used to set and display comments for each channel.
DATA (Data settings): This menu is used to make the sampling interval and calculation settings.
ALM (Alarm settings): This menu is used to make the alarm and trigger settings.
FILE (File settings): This menu is used for PCMCIA card operations.
I/F (Interface settings): This menu is used to make the USB and TCP-IP settings.
OTHR (Other settings): This menu is used to make other settings such as the date/time 
and display language settings.
INFO (Information): Device information is displayed on this screen.

(3) TIME/DIV key  

Press the [TIME/DIV] key to switch through the waveform display speeds.

For current in the 4 to 20 mA range, 
apply a resistance of 250 ohms and 
perform measurement in the 1 - 5 V range.

JUL 19, 2005  1st edition

Monitor

Control panel keys

Power connector

Power LED

Data capture LED

Battery charging LED

Power switch

PCMCIA slot

Logic input/
Alarm output terminal

Synchronization connector terminal

GND

External trigger

Pulse input

Top panel

Input terminal 1

Input terminal 2

Screwdriver for mounting 

the input terminal unit

USB connector terminal

LAN connector terminal

Monitor control dial

Battery

Humidity sensor connector

Bottom panel

• Use the [        ] keys to select the channel.
• Use the [        ] keys to change the setting.

MONITER

INPUT

RANGE

SPAN

POSITION

Displays digital values

Changes the input type: voltage, temperature or humidity

Changes the voltage and temperature ranges

Changes the waveform display range

Changes the waveform display position

Waveform

Wa Digital

Calculation

Digital

Dual-screen replay display

(7) Direction keys  

Direction keys (               )
These keys move the cursor on the screen in the direction of the arrow.
Direction keys (               )
Press these keys to move the waveform displayed during a data replay operation. (If both 
keys are held down simultaneously for three seconds or longer, the GL450 will enter key 
lock status. To cancel the key lock status, hold down both keys for a further three seconds 
or longer.)

CH1   -0.08mV

CH2   -0.00mV

CH7   +200.0C

CH10   +180.0C

1   -0.08mV

2   -0.00mV

3   -0.12mV

4   -0.2V

5   -0.012V

6   -134C

7   -0.3C

8   +35.8C

9   +12.5C

10   -0.08mV

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