GRAPHTEC GL840 User manual

GL840
midi LOGGER
Quick Start Guide
604849025 GL840-UM-854

Contents
Thank you for choose the midi LOGGER GL840.
This Quick Start Guide describes the basic operations.
Please refer to the manual (PDF) in the CD-ROM for more information.
Nomenclature ……………………………………………………… 2
Connection Procedures ……………………………………………3
Precautions to Observe When Performing Measurement ………5
Descriptions of the Control Panel Keys ………………………… 7
Descriptions of the Menu Screens …………………………… 10
Measurement Procedure…………………………………………11
1. Preparations :
How to Make the Preparations Required for Data Capture ………………… 11
2. Setup : How to Make the Settings ……………………………………………12
3.
Data Capture : How to Capture Data …………………………………………15
4.
Data Replay : How to Replay Captured Data ………………………………16
Convenient Functions …………………………………………… 17
Trigger Functions to Control Data Capture Start/Stop Operations ………… 17
Span, Trace and Position Functions to Adjust the Waveform Display ……… 19
Specifications ………………………………………………………20
Standard Specifications …………………………………………………………20
External Input/Output Functions …………………………………………………20
Common specifications of the terminal in the input section ………………… 21
Specifications of input section
(GL840-M with standard terminal) ………………… 21
Specifications of input section
(GL840-WV Withstand High Voltage high-precision terminal) … 22
Installation Guide …………………………………………………22
After unpacking, check the GL840's Exterior to make sure that
there are crack or other damage before use.
• Quick Start Guide : 1 • Ferrite core : 1 • CD-ROM : 1 • AC cable/AC adapter : 1
• Cover : 1
Checking the Outer Casing
Checking the Accessories
1

2
Nomenclature
(Option: when using
• Temperature and humidity sensor
• 4ch voltage/temperature terminal
• 3-axis acceleration/temperature sensor
• 4ch thermistor terminal
• Adapter for AC current sensor
• CO2 sensor
• Illumination/ultraviolet sensor
• Branch adapter for GS.)
Power switchMonitor Control panel keys
Power jack for humidity sensor
Humidity sensor
(Option: when using the B-530)
GND terminal
Operation status LED
• POWER
• START
• CHARGE
SD CARD
External input/output terminals
• LOGIC/PULSE
• EXT TRIG/SAMPLE
• ALARM
Input/output put cable for GL
(Option: When using B-513)
Two battery pack can be installed
(Option: When using B-569)
Battery cover
• Standard terminal (B-564)
• Withstand high-voltage high-precision terminal
(B-565)
• Screwless terminal (B-564SL)
Analog signal input terminals
Bottom Panel
Front View
Top View
AC adapter jack
LAN interface terminal USB interface terminal
Wireless unit
(Option: When using B-568)
Wireless unit
connection terminal
Label
Tilt foot
GS sensor and terminal/
adapter connection terminal

Connection Procedures
A
B
bb
DC voltage input Thermocouple input
Resistance bulb input DC current input
+
-
Compensation wire is
used if it is required.
+
-
DC voltage
+
-
+
-
Orange with red dotted line : 1
Orange with black dotted line : 2
Grey with red dotted line : 3
Grey with black dotted line : 4
White with red dotted line : 1
White with black dotted line : 2
Yellow with red dotted line : 3
Yellow with black dotted line : 4
Pink with red dotted line : Trigger input/
external sampling input
Shielded GND
Logic/pulse
input
Alarm output
< Signal assignment >
Pink with black dotted line
Connecting the AC Adapter
Connect the DC output of the AC adapter to the
connector indicated as "DC LINE" on the GL840.
Connecting the Grounding Cable
Use a flathead screwdriver to push the button above
the GND terminal while connecting the grounding
cable to the GL840. Connect the other end of the
cable to ground.
Lead wire resistance should be
10 Ω or less per wire, three
wires need to be same length.
Shunt resister
Ex: For 4-20mA, add 250Ω (±0.1%) and measure
in the 1-5V range.
* Use B-551 (option) for the shunt resistor.
Making Connections to the Analog Input Terminals
CAUTION: Connect wires to the specified channel, the channel number is shown on top of the terminal block.
For the connection to the screwless terminal, refer to the instruction manual (PDF).
Making Connections to the External Input/Output Terminals (Option: When using B-513)
* The B-513 input/output cable for GL (sold separately) is required for connecting input/output signals.
(For logic/pulse input, alarm output, trigger input, external sampling pulse input)
3
< Screw terminal >
CH1................................CH20.
+
-
b

Internal memory
• The internal memory is displayed as the SD1 or SD CARD1
• The internal memory is not removable.
4
Mounting of the SD CARD
CAUTION: When removing the SD CARD, remove it after the SD CARD on the GL840's screen is displayed in
green.
The POWER LED blinks while accessing to the SD CARD.
Connection of the USB cable
This midi LOGGER complies with the EMC Directive in the state when the supplied ferrite core is attached to the
USB cable.
When connecting with the USB cable, the USB driver must be installed to the PC. For information about how to
install, refer to the "USB Driver Installation Manual" in the supplied CD-ROM.
* Make sure that the SD CARD
is not locked.
< How to mount >
(1) Open the protective
cover of SD CARD.
(2) Push the SD CARD until
it clicks and is locked.
When connecting to the PC with the
USB cable, attach the supplied ferrite
core to the USB cable as shown in the
following figure.
Using the cable with A-type and B-type
connectors, connect between the midi
LOGGER and PC.
< How to remove >
USB cable Ferrite core (Supplied)
A-type connector B-type connector
(1) The SD CARD is unlocked
by pushing gently the SD
CARD.
Then, remove
the SD CARD.

Precautions to Observe When Performing Measurement
If a voltage exceeding the specified value is input, the semiconductor relay in the
input section will be damaged. Never input a voltage exceeding the specified value
even for a moment.
< Between +/– terminals(A) >
• Maximum input voltage: 60Vp-p (Range of 20mV to 2V)
110Vp-p (Range of 5V to 100V)
< Between input terminal/input terminal (B) >
• Maximum input voltage: 60Vp-p
• Withstand voltage: 350Vp-p/1 minute
< Between input terminal/GND (C) >
• Maximum input voltage: 60Vp-p
• Withstand voltage: 350Vp-p/1 minute
Maximum input voltage of Withstand High Voltage high-precision terminal (B-565)
Maximum input voltage of standard terminal (B-564) and screwless terminal (B-564SL)
If a voltage exceeding the specified value is input, the semiconductor relay in the
input section will be damaged. Never input a voltage exceeding the specified value
even for a moment.
Warming-up
GL840 requests to have approximately 30 minutes warm-up in order to have the
specified performance.
Unused channels
The analog input section of the GL840 contains a capacitor to improve the noise
removal capability.
Therefore, when the input terminal is open, the measurement result may be
affected by the signals of other channels. In such a case, set the input setting to
"Off" or short the +/- terminal. If the signal is input properly, there is no effect of
other channels.
< Between +/– terminals(A) >
• Maximum input voltage: 60Vp-p (Range of 20mV to 2V)
110Vp-p (Range of 5V to 100V)
< Between input terminal/input terminal (B) >
• Maximum input voltage: 600Vp-p
• Withstand voltage: 600Vp-p
< Between input terminal/GND (C) >
• Maximum input voltage: 300Vp-p
• Withstand voltage: 2300VACrms/1 minute
5

6
Noise countermeasures
If measured values fluctuate due to extraneous noise, conduct the following
countermeasures.(Results may differ according to noise type.)
Ex 1 : Connect the GL840's GND to ground.
Ex 2 : Connect GL840's GND to measurement object's GND.
Ex 3 : Operate GL840 with batteries (Option: B-569).
Ex 4 : In the AMP settings menu, set filter to any setting other than "OFF".
Ex 5: The digital filter of the GL840 provides an effective sampling interval.
(Table below)
*1 Number of Measuring Channels is the number of channels in which input settings are
NOT set to “OFF” .
*2 Temperature cannot be measured when the sampling interval is set to 10 ms/20 ms or
50 ms.
In the "OTHER" menu, the commercial power frequency to be used must be
set.
Set the AC power frequency to be used.
Device to be
measured
Z3
GL840
Z1 Z2
Thermocouple Input terminals Vin
R1
R2
Select items
50 Hz
60 Hz
Area where the power frequency is 50 Hz
Area where the power frequency is 60 Hz
Description
Number of Measuring
Channels *1
1 chahnnel or less
5 chahnnels or less
2 chahnnels or less
10 chahnnels or less
11 to 20 chahnnels
21 to 50 chahnnels
51 to 100 chahnnels
101 to 200 chahnnels
10 msec or slower *2
50 msec or slower *2
20 msec or slower *2
100 msec or slower
200 msec or slower
500 msec or slower
1 sec or slower
2 sec or slower
50 msec or slower
250 msec or slower
125 msec or slower
500 msec or slower
1 sec or slower
2 sec or slower
5 sec or slower
10 sec or slower
Allowed Sampling
Interval
Sampling Interval which
enables Digital Filter

Descriptions of the Control Panel Keys
(2) SPAN/TRACE/POSITION
(1) CH GROUP
(3) TIME/DIV
(4) MENU
(5) QUIT
(6) DIRECTION KEYS
(7) ENTER
(8) FAST FORWARD (KEY LOCK)
(9) START/STOP (USB DRIVE MODE)
(10) REVIEW
(12) CURSOR (ALARM CLEAR)
(13) FILE
(14) NAVI
(11) DISPLAY
+ + ENTER
Password setting
Press this key to switch to the next group consisting of 10 channels.
Press the key to switch to the previous group.
Press the key to switch to the next group.
* When installing the GS sensor and terminal/module (sold separately), the following group display is viewed.
1.CH GROUP
Press the [TIME/DIV] key to change the time axis display range on the waveform
screen.
3.TIME/DIV
This key enables SPAN, TRACE, and POSITION settings to be made
independently for each channel. Each time this key is pressed, the display mode
changes in the sequence shown below. Use the and keys to select the
channel, and the and keys to change the setting values.
2.SPAN/TRACE/POSITION
Points to Remember
Displays digital values (default).
Used to change span settings (change the waveform amplitude).
Used to change position settings (adjust the upper and lower values
of the waveform).
Used to change trace settings (set the waveform display to On or Off).
* If the QUIT key is pressed when the GL840 is in the SPAN, TRACE, or
POSITION mode, the display returns to MONITOR mode.
7
MONITOR
SPAN
POSITION
TRACE

8
Press the [MENU] key to open a setup menu. Each time this key is pressed, the
setup screen tabs change in the sequence shown below.
4.MENU
Press the [QUIT] key to cancel the settings and return them to their default settings.
If the device is in the Remote (Key Lock) status that the device is operated by the
computer via the interface, press this key to return the device to the normal
operating status (Local).
5.QUIT (LOCAL)
These keys are used to select menu setup items, to make span settings in the digital
display area, to move the cursors during a data replay operation, and so forth.
6.Keys (DIRECTION KEYS)
Press the [ENTER] key to enter the settings made in the setup menus, and to
confirm your settings.
7.ENTER
8.Keys (KEY LOCK)
These keys are used when you want to move the cursor quickly during replay or
change the display mode on the “Digital + Operation” screen. Hold down both keys
simultaneously for at least two seconds to enable key lock status.
To cancel key lock status, press them again for at least two seconds.
The key lock status can be confirmed by turning the key lock lamp on the monitor
red.
* By simultaneously pressing the key + ENTER + key at the same time, you can set the
password for key lock.
•AMP Settings
Used to set the input, range, filter and other settings.
•Data Capture Settings
Used to set settings such as the sampling interval, data capture
destination, and calculations during data capture.
•Trigger Settings
Used to specify data capture start and stop conditions, and alarm
conditions.
•Interface Settings
Set the USB ID and network settings.
•Other Settings
Used to set the screen brightness, background color, and language,
etc.
AMP
DATA
TRIG
I/F
OTHER
Points to Remember

Press the [START/STOP] key to perform start and stop of a data capture while the
GL840 is in the Free Running, and the capturing stop operation is performed while
it is in data capturing.
If this key is held down while the power to the GL840 is turned on, the GL840 is
switched the USB to the Drive Mode.
* For more information about the Drive Mode of the USB, refer to the User's Manual in the supplied
CD.
9.START/STOP (USB DRIVE MODE)
Press the [REVIEW] key to replay captured data. If the GL840 is in the Free
Running status, data files that have already been captured are replayed. If the
GL840 is still capturing data, the data is replayed in a 2-screen format.
* A data replay operation will not be performed if data has not been captured.
10.REVIEW
Press the [DISPLAY] key
11.DISPLAY
Press the [CURSOR] key to switch between the A and B cursors during a data
replay operation.
If the Alarm setting has been specified as "Alarm Hold", press this key to clear the
alarm.
The alarm settings are made in the "TRIG" menu.
12.CURSOR (ALARM CLEAR)
It is used to operate the internal memory (SD1) and SD CARD (SD2), or replace
the SD CARD (SD2).
13.FILE
When this key is pressed during Free Running, you can perform the setting easily
on the menus of the easy capture setting, easy trigger setting, and wireless LAN
connection setting (available only when the wireless unit is inserted.).
14.NAVI
Points to Remember
•Waveform + Digital
This is the default screen when the GL840 is turned on,
and both waveforms and digital values are displayed.The
screen settings can also be changed by using the
[SPAN/TRACE/POSITION] key.
•Full-screen Waveform
Displays waveform only in the full-screen.
* For more information, refer to the User's Manual in the
supplied CD.
•Digital + Calc
Displays large-size digital values and two types of
calculation processing results. The calculation settings are
made in the "DATA" menu.
Use the key or key to switch digital display
modes.
Waveform + Digital
Full-screen Waveform
Digital + Calc
9