FURUNO Multi-GNSS
Disciplined Oscillator
GF-880x Series
Evaluation Kit
Models
VF-81, VF-82, VF-83,
VF-84, VF-85
User’s Guide
(Document No. SE19-900-016-00)
www.furuno.com
GF-880x Series Evaluation Kit
User’s Guide
SE19-900-016-00
IMPORTANT NOTICE
No part of this manual may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopying and recording, for any purpose without the express written permission of
the publisher, FURUNO ELECTRIC CO., LTD.
FURUNO ELECTRIC CO., LTD. All rights reserved.
FURUNO ELECTRIC CO., LTD. reserves the right to make changes to its products and specifications without
notice.
In this product, FURUNO can ensure safe performance only the commands and the sentences which are
written in this document or are written in the document for this product. Please do not use the commands of the
others products, otherwise this product may have troubles and FURUNO may not support about the troubles.
FURUNO may inform some internal commands for verification etc. In this case, please use the commands only
for operation test and please do not use them for technical operation.
All brand and product names are registered trademarks, trademarks or service marks of their respective
holders.
The following satellite systems are operated and controlled by the authorities of each government.
GPS(USA)
GLONASS (Russia)
Galileo (Europe)
QZSS(Japan)
SBAS(USA: WAAS, Europe: EGNOS, Japan: MSAS)
FURUNO is not liable for any degradation while using these satellite systems. FURUNO cannot guarantee
specifications if any of these systems experience degradation. Based on these conditions the user is expected
to be familiar with these systems and is fully responsible for their use.
GF-880x Series Evaluation Kit
User’s Guide
SE19-900-016-00
Revision History
Version
0
Changed contents
Initial release
Date
2019.0524
GF-880x Series Evaluation Kit
User’s Guide
SE19-900-016-00
Table of Contents
1
2
3
4
5
6
Outline ······················································································································ 1
Component List ·········································································································· 1
Overview of Evaluation Platform ··················································································· 2
General Connection Diagram ························································································ 5
I/O Signal Description ·································································································· 6
Electrical Specifications ······························································································ 8
6.1
Absolute Maximum Rating ····························································································· 8
6.2
Power Supply ··············································································································· 8
6.3
DC Characteristics ········································································································ 8
7 Environmental Specifications ······················································································· 9
8 RF Specifications (RF_COAX) ······················································································· 9
8.1
Recommended Antenna Specifications ··········································································· 9
8.2
Antenna Amplifier Power ······························································································· 9
9 Receiver Status Signal Specifications ·········································································· 10
9.1
Alarm Signal (ALM_N) ·································································································· 10
9.2
Lock Signal (LOCK) ····································································································· 10
10
Restriction of Power ON/OFF Sequence between VCC12 and USB ································ 11
11
Monitoring Software ······························································································· 11
11.1 Installation ·················································································································· 11
11.2 Operation···················································································································· 11
12
Schematics ··········································································································· 12
12.1 VF-01/02/03 ················································································································· 12
12.2 VF-04/05 ····················································································································· 16
13
Special Attention···································································································· 19
13.1 Precaution for Users ···································································································· 19
14
Contact Information ······························································································· 20
GF-880x Series Evaluation Kit
User’s Guide
SE19-900-016-00
1
Outline
This documents describe the operation guides one of which is for the GF-8801/02/03 receivers and the other
for the GF-8804/05 receivers.
VF-81/82/83: GF-8801/02/03 evaluation platform
VF-84/85: GF-8804/05 evaluation platform
2
Component List
a. Evaluation platform
b. AU-18: GNSS Antenna
c. Conversion cable
d. USB cable
e. CD-ROM
-GNSS Conductor GF monitoring software
-GNSS Conductor GF User’s Guide
-GF-880x series Hardware Specifications
-GF-880x series Protocol Specifications
-This document
1
GF-880x Series Evaluation Kit
User’s Guide
SE19-900-016-00
3
Overview of Evaluation Platform
Figure 3.1 shows an overview of VF-81/82/83.
Figure 3.1 Overview of VF-81/82/83
2
GF-880x Series Evaluation Kit
User’s Guide
SE19-900-016-00
Figure 3.2 and Figure 3.3 show overviews of VF-84/85.
Figure 3.2 Outside Overview of VF-84/85
3
GF-880x Series Evaluation Kit
User’s Guide
SE19-900-016-00
Figure 3.3 Inside Overview of VF-84/85
4
GF-880x Series Evaluation Kit
User’s Guide
SE19-900-016-00
4
General Connection Diagram
Figure 4.1 shows a general connection diagram of VF-81/82/83.
Figure 4.1 Overview of General Connection Diagram of GF-880x Series Evaluation Platform
5
GF-880x Series Evaluation Kit
User’s Guide
SE19-900-016-00
5
I/O Signal Description
Table 5.1 and Table 5.2 show the I/O signal description of GF-880x series evaluation platform.
Table 5.1 I/O Signal Description of VF-81/82/83
Signal
name
VCC12
Connector
#
Pin#
J102
P
J103
1
EIAJ RC5320A
TYPE4
BP101-2PN10
J101
1
Not implemented
Connector
Jumper
configuration
Default
-
-
I/O
I
Description
DC 12V
I
J107 2-1
●
I
External PPS input with
50Ω termination
17
J107 2-3
-
I
External PPS input with
CMOS 3.3V level
GF_RST_N
1
-
-
I
External reset signal
GF_VCLK
3
-
-
O
Rectangular waveform
10MHz
GF_RXD
5
J106 2-1
●
I
USB
GF_TXD
7
-
-
O
-
-
O
EPPS
GF_ALM_N
9
J108
J106 2-3
Pin Number:
1-20
Pin Pitch:
2.54mm
I
UART TX
Alarm status
H: Normal
L: Failed
GF_LOCK
11
-
-
O
Lock status
H: Lock
L: Unlock
GF_GLK
13
-
-
O
Programmable clock
output signal
Frequency range is from
4kHz to 40MHz.
GF_PPS
15
-
-
O
PPS output signal
GND
2,4,8,10,12,
14,16,18-20
-
-
-
Signal ground
J204 2-1
●
O
J204 2-3
-
O
J201 2-1
●
O
J201 2-3
-
O
50Ω sine wave
CMOS 3.3V rectangular
wave
3.3V PPS at 50Ω
termination
CMOS 3.3V PPS
10MHz
J205
1
SMA
PPS
J202
1
SMA
6
GF-880x Series Evaluation Kit
User’s Guide
SE19-900-016-00
Table 5.2 I/O Signal Description of VF-84/85
Signal
name
Connector
#
Pin#
Connector
Jumper
configuration
Default
I/O
VCC12
J103
1
BP101-2PN10
-
-
I
DC 12V
J101
1
Not implemented
J104 2-1
●
I
External PPS input
with 50Ω termination
2
J104 2-3
-
I
External PPS input
with CMOS 3.3V level
GF_RST_N
1
-
-
I
External reset signal
GF_VCLK
16
-
-
O
Rectangular
waveform 10MHz
GF_RXD
14
J105 2-1
●
I
USB
J105 2-3
-
I
CMOS 3.3V RX
GF_TXD
12
-
-
O
-
-
O
UART TX
Alarm status
H: Normal
L: Failed
-
-
O
Lock status
H: Lock
L: Unlock
EPPS
GF_ALM_N
1)
10
J107
GF_LOCK
Pin Number:
1-20
Pin Pitch:
2.54mm
8
Description
GF_GLK
6
-
-
O
Programmable clock
output signal
Frequency range is
from 4kHz to 40MHz.
GF_PPS
4
-
-
O
PPS output signal
GND
5,7,9
13,18,20
-
-
-
Signal ground
J204 2-1
●
O
J204 2-3
-
O
J201 2-1
●
O
J201 2-3
-
O
50Ω sine wave
CMOS 3.3V
rectangular wave
3.3V PPS at 50Ω
termination
CMOS 3.3V PPS
10MHz
J205
1
SMA
PPS
J202
1
SMA
Notes:
1) J107 is connected to J108 in GF-8804 or 8805.
7
GF-880x Series Evaluation Kit
User’s Guide
SE19-900-016-00
6
Electrical Specifications
6.1
Absolute Maximum Rating
Table 6.1 shows the absolute maximum rating of GF-880x series evaluation platform.
Table 6.1 Absolute Maximum Rating
Symbol
Min.
Max.
Unit
Items
12V Supply voltage
Digital input (DI) voltage
Digital output (DO) current
VCC_ABS
VDI_ABS
VDO_ABS1
VDO_ABS2
IDO_ABS
-0.3
-0.5
-0.5
-0.5
-
22
6.5
6.5
3.8
±50
V
V
V
V
mA
VCC_RF output current
ICC_RF_ABS
-
75
mA
PRFIN_ABS
-
-5
0
-1
dBm
dBm
dBm
Digital output (DO) voltage
RF_IN input power
6.2
Notes
Condition: VCC=0
Condition: VCC=normal voltage
at 1575.42MHz & 1602MHz
at 900MHz
at 1800MHz
Power Supply
Table 6.2 shows the power supply range of VCC as main voltage at GF-880x series evaluation platform.
Table 6.2 Power Supply Range of VCC
Items
Symbol
Min.
Typ.
GF-8801
GF-8802
GF-8803
GF-8804
GF-8805
VCC
ICCAL01
ICCAL02
ICCAL03
ICCAL04
ICCAL05
10.5
-
12
-
13.5
100
500
800
850
850
V
mA
mA
mA
mA
mA
IANT=75mA(Max)
VANT
4.5
5
-
V
Supply voltage to VCC
VCC current
consumption
Antenna power supply
voltage
6.3
TA=25°C, unless otherwise stated
Max.
Unit
Notes
Condition
VF-01/02/03
VF-04/05
DC Characteristics
Table 6.3 shows the DC characteristics of digital I/O port at GF-880x series evaluation platform.
Table 6.3 DC Characteristics of Digital I/O Port
Items
Condition
Symbol Min.
Typ.
Max.
Low level input voltage
VIL
0.8
High level input voltage
VIH
2.0
3.3
5.5
1PPS Low level output voltage IOL=16mA(Max)
VOL
0.4
VCLK Low level output voltage IOL=16mA(Max)
VOL
0.4
1PPS High level output
IOH=-18mA(Max)
VOH
2.4
3.3
3.6
voltage
VCLK High level output
IOH=-18mA(Max)
VOH
2.4
3.3
3.6
voltage
Input pull-down resistance
RPD
10
Input pull-up resistance
RPU
10
Input pull-up voltage
VPU
3.3
-
8
Unit
V
V
V
V
J201 2-3
J204 2-3
V
J201 2-3
V
J204 2-3
kΩ
kΩ
V
Notes
GF-880x Series Evaluation Kit
User’s Guide
SE19-900-016-00
7
Environmental Specifications
Table 7.1 shows the environmental specifications of GF-880x series evaluation platform.
Items
Table 7.1 Environmental Specifications
Specifications
unit
Operating Temperature
Storage temperature
Operation humidity
0 to +45
-40 to +85
85 (MAX)
8
RF Specifications (RF_COAX)
8.1
Recommended Antenna Specifications
°C
°C
%R.H
Notes
TA= 60 °C, No condensation
Please refer to “10.7 Recommended GNSS Antenna” at Hardware Specifications of GF-8801/02/03 and
GF-8804/05.
8.2
Antenna Amplifier Power
Please refer to “10.8 Antenna Amplifier Power” at Hardware Specifications of GF-8801/02/03 and GF-8804/05.
9
GF-880x Series Evaluation Kit
User’s Guide
SE19-900-016-00
9
Receiver Status Signal Specifications
9.1
Alarm Signal (ALM_N)
Table 9.1 shows the relation between the alarm status and the configuration of LED. The user can check the
alarm field in CRZ(TPS4)2) sentence with this table.
Table 9.1 Relation between Alarm Status and Configuration of LED
Status of alarm field
ALM_N
Red LED
Description
at CRZ(TPS4)
00
Logic H
Light-out
Normal
Except 00
Logic L
Lighting
Abnormal
Notes:
2) Please refer to “6.13 CRZ (TPS4) - VCLK Frequency and Control” at Protocol Specifications of
GF-8801/02/03 and GF-8804/05.
9.2
Lock Signal (LOCK)
Table 9.2 shows the relation between the lock status and the configuration of LED. The user can check the
frequency mode field in CRZ(TPS4)3) sentence with this table. The user can set the output condition of LOCK
signal with the Lock port set field in MODESET command.
Table 9.2 Relation between Lock Status and Configuration of LED
MODESET
Status of frequency mode field
LOCK
LED
lock port set
at CRZ(TPS4)
0
1 (default)
2
3
2,3,4
Except the above mode
2,3
Except the above mode
3
Except the above mode
3,4
Except the above mode
Logic H
Logic L
Logic H
Logic L
Logic H
Logic L
Logic H
Logic L
Lighting
Light-out
Lighting
Light-out
Lighting
Light-out
Lighting
Light-out
Notes:
3) Please refer to “6.13 CRZ (TPS4) - VCLK Frequency and Control” at Protocol Specifications of
GF-8801/02/03 and GF-8804/05.
10
GF-880x Series Evaluation Kit
User’s Guide
SE19-900-016-00
10 Restriction of Power ON/OFF Sequence between VCC12 and USB
Please keep the following power on/off sequence specifications between VCC12 and USB power.
In case the user does not follow the below specification, the PC may not be able to read correct identification
from USB interface device in evaluation kit. This is due to the fact that the identification data in memory of the
USB interface device is erased which is caused by unstable power supply voltage.
tUSB_ON
tUSB_OFF
VCC12
Power supply voltage of
USB interface device
from external PC
Figure 10.1 Power On/Off Sequence Specifications between VCC12 and USB Power
Table 10.1 Specifications of tUSB_OFF and tUSB_ON
Items
Symbol
Min.
Necessary low level time of USB power
tUSB_OFF
0
after VCC12 is high level
Necessary high level time of USB power
tUSB_ON
2
after VCC12 is low level
11 Monitoring Software
11.1 Installation
Please refer to “GNSS Conductor GF User’s Guide (SE16-900-008)”.
11.2 Operation
Please refer to “GNSS Conductor GF User’s Guide (SE16-900-008)”.
11
Max.
Unit
-
sec
-
sec
GF-880x Series Evaluation Kit
User’s Guide
SE19-900-016-00
12 Schematics
12.1 VF-81/82/83
GF-8801/02/03
12
GF-880x Series Evaluation Kit
User’s Guide
SE19-900-016-00
13
GF-880x Series Evaluation Kit
User’s Guide
SE19-900-016-00
Component #
Products #
C101,C102,C120,C121
C103,C109,C110,C111,C115,C119,C202,C203,C204,C205,C
208,C209,C211,C214,C214,C218,C219,C220,C221,C222
C104,C105,C108,C116,C117,C118
C106,C107,C113,C114,C122,C123,C124,C201,C216
C112
C206,C212
C207,C213
C210,C215,C217
CR101
CR201,CR202
CR203,CR204,CR205
FL101,FL201
J101
J102
J103
J104,J105
J106,J107,J201,J204
J108
J202
J203
J205
L201
L202
L203
R101,R102
R103
R104
R105,R106,R108,R203,R204,R215,R216,R217,R221
R107
R109
R110
R201,R202
R205,R210,R211
R206,R207,R208,R209,R218,R219,R220
R212,R214
R213
U101
U102
U103
U201,U202,U205,U208
U203
U204
U206,U207
14
Vender
GRM31CR61A476ME15L
Murata
GRM155R11C104KA88D
Murata
GRM1552C1H220JA01D
GRM31CR71E106KA12L
EKZN250ETD151MF11D
GRM1552C1H101JA01D
GRM1552C1H102JA01D
GRM1552C1H470JA01D
RB085BM-90
SML-310MT-T86
551_1107
MPZ2012S601AT000
SMA1-7569A
M04-390DJ
BP101-2PN10
XG8S0231
XG8S-0331
PS-20PLB-D4T1-FL1E
SMA1-7569A
XM7B-0442
SMA1-7569A
KQ1008TTER22G
KQ1008TTE5R6G
KQ1008TTER22G
MCR03EZPJ101
MCR01MZPD5601
MCR01MZPD6201
MCR01MZPJ103
MCR01MZPJ304
MCR01MZPD4301
MCR01MZPD3901
MCR01MZPJ271
MCR01MZPJ270
MCR01MZPJ101
MCR01MZPJ151
MCR01MZPJ000
GF-8701/GF-8702/GF8703
LTM4622EY#PBF
S-1170B33UC-OTSTFG
TC7SZ126FU
TC74ACT245FT(EL)
FT230XS-U
TC7SZ04FU(TE85L_JF)
Murata
Murata
Nichikemi
Murata
Murata
Murata
Rohm
Rohm
dialight
TDK
Connect
Marushin
IDEC
Omron
Omron
JAE
Connect
Omron
Connect
KOA
KOA
KOA
Rohm
Rohm
Rohm
Rohm
Rohm
Rohm
Rohm
Rohm
Rohm
Rohm
Rohm
Rohm
FURUNO
LT
SII
Toshiba
Toshiba
FTDI
Toshiba
GF-880x Series Evaluation Kit
User’s Guide
SE19-900-016-00
Symbol
Description
Unit
VIN
VOUT
IOUT
fSW
Input voltage
Output voltage
Output current
Switching frequency
V
V
A
MHz
TA=25°C, unless otherwise stated
Min
Typ
Max
3.6
3.56
-
2
20
3.78
2.5
-
-Filter Type: 3rd Butterworth filter
-Cutoff Frequency：3MHz
-Input/Output Impedance：50Ω
Figure 12.1 shows a filter characteristics simulation result of 3rd Butterworth filter in the schematics.
Figure 12.1 Simulation Results of 3rd Butterworth Filter
15
GF-880x Series Evaluation Kit
User’s Guide
SE19-900-016-00
12.2 VF-84/85
GF-8804/05
16
GF-880x Series Evaluation Kit
User’s Guide
SE19-900-016-00
17
GF-880x Series Evaluation Kit
User’s Guide
SE19-900-016-00
Component #
Products #
C101,C103,C104,C105,C106,C110,C111,C112,C201,C216
C102
C107,C202,C203,C204,C205,C208,C209,C211,C214,C218,C2
19,C220,C221,C222
C108,C109
C206,C212
C207,C213
C210,C215,C217
CR101
CR201,CR202
CR203
CR204
CR205
FL101,FL201
J101,J202,J205
J102
J103
J104,J105,J201,J204
J106
J107,J108
J203
L201,L203
L202
R101,R102
R103,R104,R107,R203,R204,R215,R216,R217,R221
R105,R108
R106,R109
R201,R202
R205,R210,R211
R206,R207,R208,R209,R218,R219,R220
R212,R214
R213
U101
U102
U201,U202,U205,U208
U203
U204
U206,U207
GRM31CR71E106KA12L
EKZN250ETD151MF11D
Murata
Nichikemi
GRM155R11C104KA88D
Murata
GRM31CR61A476ME15L
GRM1552C1H101JA01D
GRM1552C1H102JA01D
GRM1552C1H470JA01D
RB085BM-90
SML-310MT-T86
551_1107
551_1107
551_1107
MPZ2012S601AT000
SMA1-7569A
M04-390DJ
BP101-2PN10
XG8S-0331
XG8S0231
PS-20PLB-D4T1-FL1E
XM7B-0442
KQ1008TTER22G
KQ1008TTE5R6G
MCR03EZPJ101
MCR01MZPJ103
MCR01MZPD3001
MCR01MZPD3902
MCR01MZPJ271
MCR01MZPJ270
MCR01MZPJ101
MCR01MZPJ151
MCR01MZPJ000
LTM8032EY#PBF_s
S-1170B33UC-OTSTFG
TC7SZ126FU
TC74ACT245FT(EL)
FT230XS-U
TC7SZ04FU(TE85L_JF)
Murata
Murata
Murata
Murata
Rohm
Rohm
dialight
dialight
dialight
TDK
Connect
Marushin
IDEC
Omron
Omron
JAE
Omron
KOA
KOA
Rohm
Rohm
Rohm
Rohm
Rohm
Rohm
Rohm
Rohm
Rohm
LT
SII
Toshiba
Toshiba
FTDI
Toshiba
Symbol
VIN
VOUT
IOUT
fSW
Description
Input voltage
Output voltage
Output current
Switching frequency
Unit
V
V
A
MHz
18
Vender
TA=25°C, unless otherwise stated
Min
Typ
Max
12
5.38
5.56
2
2
-
GF-880x Series Evaluation Kit
User’s Guide
SE19-900-016-00
Please note that those schematics in this documents are only samples on which FURUNO has designed this
product and are provided to users as a reference for further development at each user-end.
FURUNO shall NOT indemnify and hold the users harmless from any loss, damage, or liability for
direct/indirect infringement of any third party's patent or copyright arising from the usage of any of the
schematics in this document.
FURUNO SHALL NOT BE UNDER ANY LIABILITY TO USERS IN RESPECT OF THE SCHEMATISC IN THIS
DOCUMENT, WITHOUT LIMITATION ANY PRODUCT LIABILITY.
Thus FURUNO is not liable for the degradation by their operating so that FURUNO cannot guarantee
specification based on this condition. User is expected to be familiar with the System and make full use of it
with their responsibility.
13 Special Attention
13.1 Precaution for Users
(1) A GNSS receiver receives very weak signals sent by the GNSS satellites. Using an antenna with band
limitations or insufficient preamplifier could be disrupted by transmitted power from TV broadcast, mobile
phone, MCA or similar transmitting devices causing unstable reception status. Therefore use an antenna
equipped with a SAW filter on the preamplifier front stage to ensure stable GNSS reception.
(2) It is recommended to install the antenna vertically outdoors in a location where there are no obstacles
within its elevation angle of 5°. GNSS signals may reflect from buildings, trees or ground surfaces and
reach a GNSS antenna via the reflected (delayed) route. Therefore install a GNSS antenna in
environment where there are no reflected waves. Therefore avoid mounting near buildings or other
obstructions.
(3) Radio waves transmitted by handheld transmitters or transmitting antennas may adversely affect GNSS
signal reception by superimposing interfering signal onto the GNSS antenna. When locating the GNSS
antenna ensure is not located in the direction of offending transmitting antenna beam.
(4) RF noise may interfere via the GNSS antenna and adversely affect the GNSS signal reception. Avoid
using GNSS devices near equipment emitting RF noise.
(5) Considering the information above check tracking status of the GNSS satellites and positioning
information. Possibly for an extended period of time (8 to 24 hours) to ensure no multipath signal or other
reception issues exist. Also check the overall environment where the GNSS antenna will be located.
(6) Ensure a stable power supply connection.
(7) Install in a stable temperature, wind free environment for the GNSS unit to eliminate errors caused by
temperature deviations.
(8) Improper heat dissipation may increase the device temperature beyond the upper limit specifications
resulting in performance degradation or failure. Install the device allowing sufficient space around the
device for heat dissipation considerations.
(9) Lightning may strike the GNSS antenna. This product does not have a lightning protector so we
recommend inserting an appropriate arrester between the GNSS antenna and this product.
19
GF-880x Series Evaluation Kit
User’s Guide
SE19-900-016-00
14 Contact Information
FURUNO ELECTRIC CO., LTD
2-20 Nishinomiya-Hama
Nishinomiya, Japan
Tel: +81-798-33-9588
FURUNO U.S.A., Inc.
GPS/OEM Timing Division
70 Engerman Avenue
Denton, MD 21629
Tel: +1 (410) 479-4420
Fax: +1 (410) 479-4429
gpssales@furuno.com
20
工商网监
湘ICP备2023018690号
