Cyber Sciences STR-100 Training manual

IB-STR-01
Satellite Time Reference
STR-100
Power Reliability and Energy Efciency. Enabled.SM
March-2023
INSTRUCTION BULLETIN
User’s Guide

INSTRUCTION BULLETIN
STR-100 Satellite Time Reference
© 2023 Cyber Sciences, Inc. All rights reserved.
ii www.cyber-sciences.com
IB-STR-01
March-2023

iii
© 2023 Cyber Sciences, Inc. All rights reserved.
INSTRUCTION BULLETIN
STR-100 Satellite Time Reference
www.cyber-sciences.com
IB-STR-01
March-2023
TABLE OF CONTENTS
1—INTRODUCTION --------------------------------------------------------1
Product Overview -------------------------------------------------------------- 1
Theory of Operation ----------------------------------------------------------- 2
Catalog Numbers--------------------------------------------------------------- 2
2—INSTALLATION ---------------------------------------------------------3
Mounting Considerations----------------------------------------------------- 3
Dimensions ---------------------------------------------------------------------- 3
DIN-Rail Mounting ------------------------------------------------------------- 4
Surface Placement------------------------------------------------------------- 4
Wall / Panel Mounting --------------------------------------------------------- 5
3—WIRING -------------------------------------------------------------------7
Wiring Connections------------------------------------------------------------ 7
Wiring Control Power---------------------------------------------------------- 8
Time Protocol Output---------------------------------------------------------- 8
GPS Antenna Interface ------------------------------------------------------- 9
IRIG-B Input --------------------------------------------------------------------- 9
Configuration Port-------------------------------------------------------------10
Expansion Port-----------------------------------------------------------------10
Reset Button-------------------------------------------------------------------- 10
4—SETUP------------------------------------------------------------------- 11
Configuring the STR---------------------------------------------------------- 11
1 – Set Year (IRIG Source Only) ------------------------------------------ 12
2 – Set Local Time Offset --------------------------------------------------- 12
3 – Set Daylight Saving Time ---------------------------------------------- 13
4 – Set Parameters to Factory Values ----------------------------------- 14
5 – View Parameters --------------------------------------------------------- 15
6 – Watch DCF Output------------------------------------------------------- 15
7 – Watch GPS Input --------------------------------------------------------- 16
8 – Acutime --------------------------------------------------------------------- 16
9 – Error Counts --------------------------------------------------------------- 18
0 – Set Output Protocol------------------------------------------------------ 19
Summary of all Default Values--------------------------------------------- 19
5 — OPERATION ----------------------------------------------------------- 21
Normal Operation ------------------------------------------------------------- 21
Indicator LEDs ----------------------------------------------------------------- 21
6—SPECIFICATIONS ---------------------------------------------------- 22
7—Frequently Asked Questions (FAQs) ------------------------- 23
Note: STR-100/IRIG-B Addendum
Most of this bulletin applies equally to both
models, STR-100 and STR-100/IRIG-B.
For additional details on the STR-100/
IRIG-B, refer to Addendum IB-STR-02.

INSTRUCTION BULLETIN
STR-100 Satellite Time Reference
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iv www.cyber-sciences.com
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March-2023
Important safety precautions must be followed before attempting to
install, service, or maintain electrical equipment. Carefully read and
follow the safety precautions outlined below.
NOTE:
Electrical equipment should be serviced by qualied personnel. No responsibility is assumed by Cyber Sciences for any
consequences arising out of the use of this material. This document is not intended as an instruction manual for untrained
persons.
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
● Only qualied workers should install this equipment. Such work should be performed
only after reading this entire set of instructions.
● NEVER work alone.
●Before performing visual inspections, tests, or maintenance on this equipment, dis-
connect all sources of electric power. Assume that all circuits are live until they have
been completely de-energized, tested, and tagged. Pay particular attention to the
design of the power system. Consider all sources of power, including the possibility of
backfeeding.
●Apply appropriate personal protective equipment (PPE) and follow safe electrical prac-
tices. For example, in the USA, see NFPA 70E.
●Turn off all power supplying the equipment in which the device is to be installed before
installing and wiring the device.
● Always use a properly rated voltage sensing device to conrm that power is off.
●Beware of potential hazards, wear personal protective equipment, and carefully inspect
the work area for tools and objects that may have been left inside the equipment.
●The successful operation of this equipment depends upon proper handling, installation,
and operation. Neglecting fundamental installation requirements may lead to personal
injury as well as damage to electrical equipment or other property.
Failure to follow these instructions can result in death or serious injury.
DANGER
!
SAFETY PRECAUTIONS

1
© 2023 Cyber Sciences, Inc. All rights reserved.
INSTRUCTION BULLETIN
STR-100 Satellite Time Reference
www.cyber-sciences.com
IB-STR-01
March-2023
The STR-100 Satellite Time Reference uses Global Positioning System
(GPS) technology to provide a highly-accurate date/time reference for
Sequence of Events Recording (SER) and other critical power appli-
cations. The STR-100 accepts an input from a Trimble Acutime 360
“smart antenna” or an amplitude-modulated (AM) IRIG-B source and
outputs a time reference signal accurate to +/- 50 microseconds using
standard time protocols: DCF77 and 1per10 (base model) or unmodu-
lated IRIG-B (model STR-100/IRIG-B). Up to 32 devices can be syn-
chronized from one STR-100.
Product Overview
1—INTRODUCTION
Figure 1-2. STR-100 front view (with connectors removed)
Figure 1-3. STR-100 right side view
STR-100
Control Power
24Vdc, 36w
IRIG-B
Trimble AcutimeTM 360
GPS antenna
(OR)
Figure 1-1. STR-100 system diagram
Personal Computer
with HyperTerminal
(for optional setup)
DCF77 or 1per10 (1 to 16 devices)
DCF77 (1 to 16 devices)
COM 1

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STR-100 Satellite Time Reference
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Theory of Operation The STR-100 accepts a GPS time signal input from either a Trimble
Acutime 360 GPS smart antenna or from a GPS receiver with IRIG-B
output, and provides a time synchronization output in DCF77 or 1per10
format for multiple devices. Typical power distribution applications
include Sequence of Events Recording (SER) systems in data centers,
hospitals and re neries, and electric utility “Smart Grid” applications
such as Power SCADA and substation automation.
DCF77 is a time synchronization protocol used widely. The DCF77
time synchronization output is a 24Vdc pulse-width modulated signal
that provides a complete date/time string once a minute. The signal
contains a one-pulse-per-second component that is accurate to +/- 50
microseconds in reference to UTC (Coordinated Universal Time). The
pulse string contains a BCD (Binary Coded Decimal) value for minute,
hour, day, day of week, month, and year, as well as other control
parameters such as leap second and Daylight Saving Time.
1per10 is a simpler time protocol that uses one synchronizing pulse
every 10 seconds. Only channel 2 of the STR-100 time output can be
con gured for 1per10. The default output for both channels is DCF77.
On power-up, the STR determines the type of GPS data source, rst
checking for an Acutime antenna signal. If an antenna signal is not
detected, the STR checks for an IRIG-B signal. During the detection
test, the STAT (status) LED ashes twice repeatedly. Once a signal is
detected, the SYNC LED is turned on, and normal operation begins.
During normal operations, the SYNC LED remains lit, and the STAT
LED ashes repeatedly according to the type of receiver: three blinks
for IRIG-B, and four blinks for Acutime. The STR captures the date and
time each second, and outputs the DCF77 date and time at the top of
each minute.
Optional adjustments may be made for local time offset and Daylight
Saving Time (DST). The purpose of the local time offset is to convert
UTC time into local time, and its value depends on the user’s time
zone. If the user sets parameters for Daylight Saving Time, then the
STR makes this adjustment as well.
Catalog Numbers
Catalog no. Description
STR-100 Satellite Time Reference, DCF77 and 1per10 output
STR-100/IRIG-B Satellite Time Reference, unmodulated IRIG-B output
STR-IDM IRIG-B Distribution Module for STR
NOTE:
For information about the STR-100/IRIG-B or STR-IDM, refer also to instruction bulletins IB-STR-02 and IB-IDM-01,
respectively.
Table 1-1 – Catalog Numbers
Modulated
IRIG-B Input
OR
CH 1 CH 2
24 Vdc
control power
Acutime
GPS Antenna Input
DCF77 Output
(optional)
BNC-to-screw-te
rminal adapter
BNC-2W
DCF77 Output
(or 1per10)
}
24V levels
(5V levels)
Unmodulated
IRIG-B Output
IRIG-B @ 24V levels, plus
24 Vdc control power
(to STR-IDM)
(optional)
BNC-to-screw-te
rminal adapter
Acutime
GPS Antenna Input
24 Vdc
control power
BNC-2W
IRIG-B @ 24 Vdc, plus
24 Vdc control power
(from STR-100/IRIG-B)
IRIG-B @ 24 Vdc, plus
24 Vdc control power
(to next STR-IDM)
Unmodulated IRIG-B
Outputs (x8)
(5V levels)
Figure 1-4. STR-100 Inputs/Outputs
Figure 1-5. STR-100/IRIG-B Inputs/Outputs
Figure 1-6. STR-IDM Inputs/Outputs

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INSTRUCTION BULLETIN
STR-100 Satellite Time Reference
www.cyber-sciences.com
IB-STR-01
March-2023
The STR-100 can be set on a at surface, mounted to a wall or panel
using screws, or DIN-rail mounted to a wall or panel using the DIN-rail
mounting kit provided. Figure 2-1 shows STR dimensions. Figures 2-2,
2-3 and 2-4 detail the various mounting options.
When choosing a mounting location, consider the following points:
●Allow for easy access to the STR-100.
●Allow space for all wires to be neatly routed down the side or
bottom of the device.
● Allow sufcient ventilation to avoid exceeding the operating
temperature limits of the device.
Typical locations for mounting the STR-100 include the following:
●Power equipment instrumentation compartment
● Ofce or raised-oor environment
●Auxiliary control panel or cabinet
Mounting Considerations
Figure 2-1. STR-100 front and side views of DIN-rail mounting, with dimensions
2—INSTALLATION
Dimensions
INCHES
(millimeters)
7.92
(201)
1.77
(45)
3.05
(78)
1.50
(38)
2.30
(58)
0.40
(11)
4.81
(122)
0.59
(15)
Side View INCHES
(MILLIMETERS)

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STR-100 Satellite Time Reference
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DIN-Rail Mounting
Figure 2-2. STR-100 mounting on standard DIN rail
Figure 2-3. Installing feet for at surface placement of STR-100
Surface Placement
The STR-100 is suitable for DIN-rail mounting as shown below. The
DIN-rail mounting kit (plastic support brackets) are provided.
(optional)
Feet
DIN rail
Feet

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INSTRUCTION BULLETIN
STR-100 Satellite Time Reference
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IB-STR-01
March-2023
Figure 2-4. Wall / panel mounting of STR-100
Wall / Panel Mounting The STR-100 has slotted screw holes on the bottom and rear that may
be used to mount the device to a wall or at panel.
INCHES
(millimeters)

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STR-100 Satellite Time Reference
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INSTRUCTION BULLETIN
STR-100 Satellite Time Reference
www.cyber-sciences.com
IB-STR-01
March-2023
The physical wiring connections of the STR-100 are shown below:Wiring Connections
Figure 3-1. STR-100 physical wiring connections (shown with front connectors removed)
3—WIRING
Reset Button
DCF (or 1per10)
Outputs
GPS Interface
Antenna Input
Modulated IRIG-B Input
(BNC, Female)
Confi guration Port
COM 1 (RS-232)
Expansion Port
(reserved for future)
Fig. 3-2. Typical GPS system architecture showing STR-100 with DCF77 and 1per10 time sync output signals
Control Power
24Vdc, 1.5A
Satellite Time Reference
GPS INTERFACE
PWR
SYNC
STAT
CH 1
CH 2
IRIG-B output
IRIG-B
STR-100
Satellite Time Reference
Trimble AcutimeTM 360
Smart GPS Antenna
Daisy-chain wiring, Belden 8760 cable or
equivalent, 2000 feet (600m) max total length.
DCF77
up to 16
devices
SER
1per10
EZC-DCF77
up to 16
devices
1per10 1per10 1per10 1per10
24Vdc
CH 1 CH 2
= Acutime Interface
= DCF77
= 1per10
DCF77 DCF77 DCF77
RS-422 signal,
Antenna interface cable: CAB-ACU-xxx
xxx = length (50, 100, 200 or 400 feet)
OR
= Modulated IRIG-B
SER 32

INSTRUCTION BULLETIN
STR-100 Satellite Time Reference
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8www.cyber-sciences.com
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March-2023
Wiring Control Power The STR-100 requires a control power source of 24Vdc, nominal, with
the ability to provide up to 36 watts of power (depending on the number
of devices). The power supply should be Class 2 rated with a minimum
of 1500 volts of isolation. Use 18 AWG wire (minimum) , and limit the
control power cable length to 10 meters (32.8 feet) or less.
The STR control power connector has three terminals. The two outside
terminals are for the 24Vdc positive and common connections to the
power supply. The middle terminal is a safety ground connection
(green-wire ground). The gure below provides details for the control
power wiring.
Time Protocol Output
Figure 3-3. Control power connections
The STR-100 provides two time protocol outputs. Channel one is set to
output DCF77 and channel two is user-con gurable for either DCF77
(default) or one-pulse-per-ten (or “1per10”). Each output channel
provides a 24Vdc pulse-width modulated signal with the ability to
source 500mA. The gure below illustrates these connections.
Figure 3-4. Time protocol output connections
–+
Ground (green-wire ground)
#18 AWG (minimum)
cable
–
Power Supply
Class 2, 24Vdc
36 watts
1.5kV isolation
1
Belden 8760 or equivalent
Output – Channel 2
Output – Channel 1
2 3 4 –
+
–
+
* Note: to avoid ground loops, the cable shield is normally grounded
in one location only. If desired, the shield can be terminated at the
(center) ground terminal of the STR power connector (shown above).
shield (optional)
shield (optional)
Note: The common connection from
the 24Vdc power supply should not be
connected to green-wire ground unless
speci ed by local electrical codes.
+ 24Vdc

9
© 2023 Cyber Sciences, Inc. All rights reserved.
INSTRUCTION BULLETIN
STR-100 Satellite Time Reference
www.cyber-sciences.com
IB-STR-01
March-2023
GPS Antenna Interface The primary GPS time reference signal for the STR-100 is a Trimble
Acutime 360 GPS smart antenna. The gure below provides details
for connecting the antenna to the STR-100 using a Trimble Acutime
antenna interface cable. This cable is terminated with a weather-proof
DIN connector at the antenna end and is un-terminated ( ying leads) at
the STR-100 end.
Figure 3-5. Acutime GPS antenna interface connections
IRIG-B Input Supplying a modulated IRIG-B time reference to the STR-100 is
accomplished by connecting a coaxial cable from an IRIG-B source
(e.g., GPS receiver) to the IRIG-B input on the STR-100. The IRIG-B
input on the STR-100 is a female BNC connector. Refer to the manual
for the IRIG-B generator supplying the time reference signal to the
STR-100 for recommended cable type and length limitations.
Figure 3-6. IRIG-B input via side BNC connector
Modulated
IRIG-B
(coaxial cable)
Note: If the IRIG-B signal is distributed
via twisted-pair cable, a BNC (male) to
binding post adapter can be used.
(Pomona 1296, CSI cat. no. BNC-2W).
Ground (optional*)
* Note: cable shield is normally
grounded in one location only.
Note: Two or more STRs can share an
input from a single Acutime 360 GPS
antenna. For more details, see Tech
Note: Multiple STRs Can Share a Single
GPS Antenna (TN-105)

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STR-100 Satellite Time Reference
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Configuration Port
Expansion Port
The STR-100 and the Acutime GPS antenna can both be con gured
through the COM 1 port on the STR-100. The connection between
the STR and a PC is made using a serial null modem cable. The
null modem cable should be connected between the DB-9 (male)
connector on the STR and a DB-9 (male) serial port on a PC.
The COM 1 (RS-232, male) port on the STR is con gured as DTE,
19.2k baud rate, 8 data bits, no parity, 1 stop bit (8N1)
Pin number Description
1 n/c (not connected)
2 Receive data
3Transmit data
4n/c
5Signal ground
6n/c
7n/c
8n/c
9n/c
Fig. 3-7. COM 1 con guration port (DB-9)
Table 3-1 – STR COM 1 port (RS-232) pin assignments
The STR-100 has a DB-15 (female) connector that is designated as an
Expansion Port. This port is reserved for future use and is not currently
used.
15
6 9
Reset Button The STR-100 has a reset button that may be used to interrupt normal
operation and re-start operation. Use a small instrument such as a
paper clip to depress the reset button through the pin hole located on
the front of the unit between the two columns of LEDs.
This does not clear any setup values. It also does not reset the GPS
antenna.
Another way to reset the STR is to disconnect control power for a few
seconds. Note that this method also resets the antenna.
COM 1 settings (for HyperTerminal):
• DTE
• 19.2 kbps
• 8 data bits, no parity, 1 stop bit (8N1)

11
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INSTRUCTION BULLETIN
STR-100 Satellite Time Reference
www.cyber-sciences.com
IB-STR-01
March-2023
Configuring the STR
Figure 4-1. Con guring the STR-100 using HyperTerminal
4—SETUP
The STR-100 main menu displays the STR rmware version number,
date, and time on the top line along with the type of GPS source
that is currently in use. The data presented on the top line does not
automatically update. The actions available to the user are listed along
with a selection number. The user should enter the desired number at
the “Selection:” prompt and press ENTER. Pressing ENTER without
making a selection will refresh the screen with updated values on the
top line of the main menu. Pressing ESC will deactivate the terminal
interface until ENTER is pressed again. Each item on the menu is
explained in the following sections.
The STR-100 provides a terminal interface for con guration of the STR
and the Acutime smart antenna parameters. The STR user interface
can be accessed by connecting a PC running HyperTerminal (or
equivalent). Using a null modem cable, connect a PC to the STR-100
COM 1 serial port, and con gure HyperTerminal for DTE, 19.2 kbps
baud rate, 8 data bits, no parity, 1 stop bit (8N1)
When the STR is powered ON or when the unit is RESET, the terminal
interface begins execution and runs continually from that point. If a
PC running HyperTerminal is properly connected, the prompt “Press
ENTER to activate terminal interface.” is displayed on the PC screen.
Even if the prompt does not appear, pressing ENTER will bring up the
main menu. To exit the terminal interface at any time, press ESC. The
terminal interface can be restarted at anytime by pressing ENTER. The
terminal interface main menu should look like the following:
STR-100, V1.04 12/11/2002 14:49 Trimble
Copyright 2002, Cyber Sciences, Inc., All Rights Reserved
1 = Set Year (IRIG only)
2 = Set Local Time Offset
3 = Set Daylight Saving Time
4 = Set Parameters to Factory Values
5 = View parameters
6 = Watch DCF Output
7 = Watch GPS Input
8 = Acutime
9 = Error Counts
0 = Set Output Protocol
ESC = Exit
Selection:
COM 1 settings (for HyperTerminal):
• DTE
• 19.2 kbps
• 8 data bits, no parity, 1 stop bit (8N1)
Note: The original HyperTerminal utility
was licensed by Microsoft to include with
Windows. This was discontinued with the
release of Windows Vista. Suitable sub-
stitutes are available and can be found by
searching the Web for “HyperTerminal.”
Two such sites:
http://www.hilgraeve.com/
http://www.putty.org/

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STR-100 Satellite Time Reference
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This item is used to set the year when IRIG-B is the source of GPS
date and time. Since the IRIG-B input frame does not contain a value
for year, the STR has to supply it. (If the Acutime GPS antenna is being
used, and the user changes the year through this menu item, it will
have no effect — the year supplied by the antenna is used instead.)
The default value for year is the year of STR-100 manufacture. The
year must be in the range 2002 - 2047. If a two-digit number is entered
(02 to 47), the STR-100 automatically adds 2000 before validation.
Figure 4-2. Set Year (IRIG-B source only)
Figure 4-3. Set Local Time Offset
1 – Set Year (IRIG Source Only)
2 – Set Local Time Offset This item is used to adjust UTC to local time. The offset is expressed
as a positive or negative number of hours and minutes that needs to
be added to the GPS time before translation to DCF77. The current
offset is displayed, and the user can change it or leave it unchanged by
exiting back to the main menu. For example: The local time offset for
CST (Central Standard Time) in the USA is –06:00.
Set Year (IRIG only)
Current value of IRIG year: 2002
Enter year (or ESC to exit):
Set Local Time Offset
The offset is a string containing hours and minutes to be added to or
subtracted from GPS time, giving local time. The format is (s)hh:mm,
where s is an optional sign (+ or -), hh equals hours (00 - 23), and
mm equals minutes (00 - 59)
Exa m ples:
01:00 - add 1 hour
+01:00 - add 1 hour
-01:00 - subtract 1 hour
-10:30 - subtract 10 hours and 30 minutes
00:00 - same as no offset
Current offset value: 00:00
Enter offset (or ESC to exit):

13
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STR-100 Satellite Time Reference
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IB-STR-01
March-2023
This item is used to enter setup values for Daylight Saving Time (or
Summer Time). A table is provided that contains nine (9) sets of
start and stop dates/times that dene when an adjustment should be
made to UTC time. For example, the nine sets might represent the
current year and the next eight years. The current table is displayed
and then the command prompt “CMD?” appears at the bottom.
The user changes values in the table by entering commands that
are documented on the help screen (see below). When the STR is
adjusting the time, it searches the Daylight Saving Time table for
entries that have been enabled. When it nds an enabled row with a
start time less than or equal to the STR time and a stop time greater
than the STR time, it adds the offset of that row. The search is in
ascending order by row and ends when it nds an offset to add.
Note: All start/stop time values are referenced to “standard time.” For
example, in the Central Time zone of the USA, Daylight Saving Time
begins at 2:00 am CST (Central Standard Time) and ends at 2:00 am
CDT (Central Daylight Time). The Daylight Saving Time START time
should be entered as 2:00 am (CST) and the STOP time should be
entered as 1:00 am (CST).
3 – Set Daylight Saving Time
Figure 4-4. Set Daylight Saving Time (Summer Time)
Set Daylight Saving Time
<------ Start -----> <------ Stop ------> Offset Enabled?
1 2 3 4 5
1 00/00/0000 00:00:00 00/00/0000 00:00:00 60 no
2 00/00/0000 00:00:00 00/00/0000 00:00:00 60 no
3 00/00/0000 00:00:00 00/00/0000 00:00:00 60 no
4 00/00/0000 00:00:00 00/00/0000 00:00:00 60 no
5 00/00/0000 00:00:00 00/00/0000 00:00:00 60 no
6 00/00/0000 00:00:00 00/00/0000 00:00:00 60 no
7 00/00/0000 00:00:00 00/00/0000 00:00:00 60 no
8 00/00/0000 00:00:00 00/00/0000 00:00:00 60 no
9 00/00/0000 00:00:00 00/00/0000 00:00:00 60 no
Press ESC to return to main menu, or
enter table update commands (‘h’ for help).
CMD?

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Figure 4-6. Set Parameters to Factory Values
4 – Set Parameters to Factory Values This item sets parameters in the STR-100 back to factory defaults.
(Refer to table 4-1 for a summary of all default values.) None of the
antenna parameters are affected by this action.
Note: As shown on the screen, conrming this action will set (or reset)
the channel 2 protocol to DCF77.
Figure 4-5. Daylight Saving Time – Help Screen
Daylight Saving Time - Help Screen
The DST table holds 9 rows of daylight saving time parameters.
Each row consists of a start date/time, a stop date/time, and an offset.
To set a daylight saving period, ll in the elds of a row and
enable the row. Fields are updated using commands containing the eld
ID and eld value. Field ID is the pair of row and column numbers.
Commands operate on a eld, a row, or a table.
Substitute row number for ‘x’, column number for ‘y’, and date
(mm/dd/yyyy), time (hh:mm:ss), or offset (0 - 120) for ‘value’.
Enable row: ex Ex: Enable row 2. CMD? e2
Disable row: dx Ex: Disable row 3. CMD? d3
Reset row: rx Ex: Reset row 4. CMD? r4
Reset table: rt Ex: CMD? rt
Set eld: x,y=value
Ex: Set start date of period 1. CMD? 1,1=4/5/2002
Ex: Set offset of period 3 to 30 min. CMD? 3,5=30
Press any key to return to ‘Set Daylight Saving Time’
Set Parameters to Factory Values
This function performs the following:
Sets IRIG year to 2002
Sets local time offset to zero
Sets channel 2 protocol to DCF
Resets daylight saving time table
Conrm? (Y or N)
3 – Set Daylight Saving Time (continued)

15
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STR-100 Satellite Time Reference
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March-2023
This menu item displays an overview of all STR-100 setup parameters.5 – View Parameters
Figure 4-7. View Parameters
Figure 4-8. Watch DCF77 Output
This item lets the user see the DCF77 bit stream as it is being
transmitted. The last character in the DCF77 frame is displayed as an
underline character. The underline character is not actually transmitted.
It simply represents the one second pause at the end of a frame (part
of the DCF77 protocol). Most of the time the rst line of DCF output
will be a partial frame, because the menu item was selected at a
random time rather than exactly at the top of a minute. The date and
time values displayed at the end of each line are after all adjustments
(local offset and Daylight Saving Time) have been made. The display is
terminated by pressing ESC at any time.
6 – Watch DCF Output
View Parameters
Local Time Offset = 00:00
IRIG year = 2002
Channel 1 = DCF (Not selectable)
Channel 2 = 1 pulse every 10 seconds
Daylight Saving Table:
<------ Start -----> <------ Stop ------> Offset Enabled?
1 2 3 4 5
1 00/00/0000 00:00:00 00/00/0000 00:00:00 60 no
2 00/00/0000 00:00:00 00/00/0000 00:00:00 60 no
3 00/00/0000 00:00:00 00/00/0000 00:00:00 60 no
4 00/00/0000 00:00:00 00/00/0000 00:00:00 60 no
5 00/00/0000 00:00:00 00/00/0000 00:00:00 60 no
6 00/00/0000 00:00:00 00/00/0000 00:00:00 60 no
7 00/00/0000 00:00:00 00/00/0000 00:00:00 60 no
8 00/00/0000 00:00:00 00/00/0000 00:00:00 60 no
9 00/00/0000 00:00:00 00/00/0000 00:00:00 60 no
Press any key to return to main menu.
Press ESC to return to main menu
0000000000000101101001101010100001000110000010000000 _ Thu 01/10/02 15:16
00000000000000000000111101000101010100001000110000010000000 _ Thu 01/10/02 15:17
00000000000000000000100011000101010100001000110000010000000 _ Thu 01/10/02 15:18
00000000000000000000110011001101010100001000110000010000000 _ Thu 01/10/02 15:19

INSTRUCTION BULLETIN
STR-100 Satellite Time Reference
© 2023 Cyber Sciences, Inc. All rights reserved.
16 www.cyber-sciences.com
IB-STR-01
March-2023
7 – Watch GPS Input
Figure 4-9. Watch GPS Input
Figure 4-10. Acutime Main Menu
8 – Acutime
This item lets the user see the date, time, and day of week every
second. The values for date and time on this screen have not been
adjusted by local offset or Daylight Saving Time. The display is
terminated by pressing ESC at any time.
This item will display the Acutime GPS antenna main menu that is used
to view or set the antenna parameters. The four menu items allow the
user to display the antenna status screen, set self-survey parameters,
perform a self-survey, and to set the Acutime antenna back to its initial
state as shipped from the factory. These menu options provide the
user the ability to congure the antenna parameters through the STR.
A screen shot of each of the Acutime menu items is included in this
section.
Press ESC to return to main menu
Thu 01/10/2002 15:42:09
Thu 01/10/2002 15:42:10
Thu 01/10/2002 15:42:11
Thu 01/10/2002 15:42:12
Thu 01/10/2002 15:42:13
Thu 01/10/2002 15:42:14
Thu 01/10/2002 15:42:15
Thu 01/10/2002 15:42:16
Thu 01/10/2002 15:42:17
Thu 01/10/2002 15:42:18
Thu 01/10/2002 15:42:19
Thu 01/10/2002 15:42:20
Acutime Main Menu
1 = View Status
2 = Set Self-Survey Parameters
3 = Perform Self-Survey
4 = Factory Reset
ESC = Exit
Selection:
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