ASTRO-PHYSICS GTOCP4 User manual

Astro-Physics
GTO Servo Drive System
Model GTOCP4
Operating Instructions
Non-ASCOM
Windows
Program
Non-ASCOM
Mac
Program
Astro-Physics Command Center
ASCOM
AP
V2 Driver
AP GTO Keypad
Apple, Android
& Windows
Mobile Devices
via
Direct or
Network Wi-Fi
Multiple
ASCOM
Client
Applications
ACP on iPad
Auto-guider Inputs
from
Guide Camera
Windows Computer
with ASCOM
Planetarium
Software
AP GTOCP4
Servo Control Box
November 30, 2017

1

2

3
Please RecoRd the Following inFoRmation FoR FutuRe ReFeRence
GTOCP4 Serial Number: _____________________________________________
Purchase Date: _____________________________________________

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Mach1GTO

5

6
Mach1GTO
Mach1GTO
Mach1GTO

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PulseGuide
.
GTOCP4 Control Box - Layout and Features
10-pin Receptacle for Servo Motors
10-pin Receptacle for Absolute Encoders
Control Panel of GTOCP4 Control Box

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12-volt Locking Receptacle
See photo on previous page.
Power Indicator Light
Keypad Receptacle
Auxiliary Receptacle
Autoguider Port Receptacle
Communication Ports
61
GTOCP3 AutoGuider Port
RJ-11-6 Receptacle
Pin
Positions
Jack 623k
Pin 1 NC
2 GND
3 R.A. –
4 Dec. –
5 Dec. +
6 R.A. +

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APCC)ACP™Starry
Night™
Choosing Your Communication Interfaces
USB Port

10
IMPORTANT!!
RS-232 Ports (2)
"So, why would anyone still use an old-fashioned serial port?" you might
ask.
**FYI – The DE-9 plug and receptacle are often mistakenly referred to as
DB-9s. The E or B represents the shell size of the plug or receptacle. The
B shell is the larger size used for the 25-pin DB-25 plug and receptacle,
but the smaller 9-pin version uses the E size shell and is therefore correctly
called a DE-9. Now you know!
Make sure that your serial cable is wired straight-through! The use of “crossing”, “reversing”,
“null”, or “null modem” cables is a frequent source of communications failure and frustration.
GTO Control Box
Serial RS-232 Ports
DE-9 Female Jack
1 Empty
2 Transmit from Servo Drive
3 Transmit from Computer to Servo
4 Empty
5 Ground
6 Data Set Ready
7 Empty
8 Empty
9 Empty
Pins 2, 3, 5 & 6 are active.
5 4 3 2 1
9 8 7 6
Note: If making your own cable, a jumper
may be required between pins #4 and #6.

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Ethernet Port
An IP address takes the form: xxx.xxx.xxx.xxx where xxx is a value
between 0 and 255. A typical IP address on your home network might be 192.168.0.101
Use the same
Username and Password as for a keypad rmware update.
TheSkyX™
WiFi Connection

12

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It is highly recommended that you change the password
to something more secure since anyone with access to this manual and knowledge of your serial number can
determine the factory default password.
Important Note: Most devices are smart enough to ask you for the new password when you try to connect after you
have made a password change. This is, unfortunately not the case with Windows 7 and some later versions as well.
Once a Windows computer has made a connection with your original password, it may simply fail to connect instead
of asking you for the new password. It won’t even have the courtesy to tell you why it failed to connect.
To remedy this in Win 7, click on the little WiFi symbol at the far right of the task bar. This will open a small
box with the listing of all the currently available WiFi Networks. Find the GTOCP4's WiFi name and right-click on
it. Select "Properties". In the next little window that opens, go to the Security Tab. Here, you can enter your new
password where it says "Network Security Key. To make it easier, check the box to show the characters - just
remember to un-check it when you are nished. Once the password is entered, click OK. Now you should be able
to connect using Windows.
In Win 10, You will want to access the Network & Internet section of the new Settings App. This can be done by
either opening the app or by clicking the same WiFi icon mentioned above for Win 7, and then clicking the settings
link at the bottom of the list. First, try connecting to the GTOCP4 from the settings page. It will hopefully then present
you with a request for additional information (this means the password). If it does not, then click Manage WiFi
Settings at the bottom, select the GTOCP4 from the list and tell Windows to forget it. Now power-cycle the GTOCP4,
allowing at least a minute or so between power-off and power-on. (Windows needs to lose, and then re-nd the
“new” network.) Go back to the main WiFi page and you should see the GTOCP4 again. Now this time, it should
allow you to enter your password and connect. Why, nothing could be simpler! (ahem! cough! cough!)

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If you will be using Ethernet, but NOT WiFi, turn WiFi OFF from the “Change Network Connection” page of the
GTOCP4 internal web page set. This is a good practice anyway. After all, there is no way to hack a wireless
connection that is turned off!
If you will be using WiFi, but NOT Ethernet, set the DHCP mode to OFF or CLIENT in the “Advanced Ethernet
Settings” page of the GTOCP4 internal web pages. This may already be set as a default.
If you plan to use both Ethernet and WiFi, regarding Ethernet, set the DHCP mode to CLIENT to connect the GTOCP4
to a Local Area Network (LAN). Set the DHCP mode to SERVER ONLY if you will be connecting directly, peer-to-peer
with a computer. Change these on the “Advanced Ethernet Settings” page of the GTOCP4 internal web page set.
If you wish to set the DHCP mode to BOTH, understand that the GTOCP4 will start out in "client" mode, and then
switch to "server" mode if it is not assigned an IP address after a timeout period. Per IEEE standards, the switch to
server mode will take place after more than 30 seconds, so you may need to be patient if waiting to use the GTOCP4
as a peer-to-peer device when set to "both."
PEMPro™
PEMPro™
PEMPro™
PEMPro™

15
Removing and Installing the GTOCP4 Control Box
Mach1GTO
Mach1GTO
Note: The photos show thumbscrews securing the
control box, but the mount may also use set screws.
Thumbscrews
Securing CP4
Mach1GTO
900GTO shown
1200GTO shown
Thumbscrews Securing CP4
Thumbscrews Securing CP4
1600GTO shown
600EGTO shown

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GTOCP4 and Absolute Encoders
APAE Utility and Absolute Encoder Mounts

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GTOCP4 and Precision Encoders
Astro-Physics Command Center (APCC)
Astro-Physics Absolute Encoder Mini Utility
Installation, Settings and Operating Instructions for the Limit Switch
System (36LSS) and Precision Encoder System (on the 3600GTOPE),
dated March 27, 2013

18
"Initialization and Shut-down"
by Simulation Curriculum Corp.
by Orion Telescope & Binoculars
via
Direct or
Network Wi-Fi
by Simulation Curriculum Corp.
by DC-3 Dreams
by CCDWare, Ltd.
by Diffraction Limited
by Software Bisque
by Ray Gralak
by Software Bisque
by Simulation Curriculum Corp.
by Software Bisque
by Microprojects
AP GTOCP4
Servo Control Box

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GTO Keypad Operation
The Astro-Physics ASCOM V2 Driver
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1
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