MODEL 1201B/C SETUP GUIDE
Unpacking
Carefully check the packing material for these accessories: GNSS antenna, standard antenna cable
assembly, and mounting screws for rack ear removal. Handle the GNSS antenna carefully, as it may
be damaged if dropped.
Configuring Output Jumpers
Listed below are the various internal jumpers which control the input and output signal types. Some output
signals require two jumpers to be set.
J5
J4
J6
R24
J7
J3
R24 IS USER SUPPLIED
ANTENNA
INPUT
FIBER
OPTION COM 1 COM 2
RELAY
PORT 1PORT 2PORT 3
A B
C
A B
A B
C
A B
C
A B
C
D E
A B
C
A B
C
A
A B
C
A B
C
B
JMP14 JMP2 JMP8 JMP13 JMP6 JMP4
JMP9 JMP12 JMP7
JMP11
JMP10
Figure 1: Jumper Locations
Signal Selection Drive Type
IRIG-B Prog. IRIG-B Event Open
Connector Jumpers Unmodulated 1 PPS Pulse Modulated Input CMOS Drain
Port 1
JMP6 C* A B
JMP7 Note 1 C A* B
Port 2
JMP13 C* A B
JMP12 Note 2 B C A*
Port 3
JMP8 C* A B
JMP9 Note 1 C A* B
Fiber JMP14 C* A B
* Default Setting
Note 1: Must select Drive Type of CMOS or Open Drain when not used as Event Input.
Note 2: Must select Drive Type of CMOS when not used for IRIG-B Modulated or as Event Input.
Table 1: Main Output Signal Selection
Arbiter Systems, Inc. · 1324 Vendels Circle, Suite 121 · Paso Robles, CA 93446 · USA · Tel: +1.805.237.3831
Fax: +1.805.238.5717 · E-mail: techsupport@arbiter.com · Internet: http://www.arbiter.com PD0051900D 1
MODEL 1201B/C SETUP GUIDE
Connector Jumper Data Out IRIG-B
RS-485 JMP2 A* B
* Default Setting
Table 2: RS-485 Output Signal Selection
Connector Jumper Out-of-Lock Programmable Pulse
Relay JMP2 A* B
* Default Setting
Table 3: Relay Signal Selection
Connector Jumper RS-232 Port 1 Port 2 Port 3 Option Header
Event Input JMP4 A B C D E*
* Default Setting
Table 4: Event Input Source Selection
Installing GNSS Antenna
The GNSS antenna included with the clock is designed to be threaded onto a piece of 3/4 inch pipe nipple.
Make sure that the antenna has a clear view of the sky in all directions of the compass for best GNSS
satellite tracking.
GNSS Antenna
3/4 inch Pipe Nipple
Operate LED
Mounting Point
Antenna Cable
Figure 2: Antenna Mounting Assembly
1. Pass the antenna cable through the pipe nipple and attach the cable to the antenna. Tighten by
hand, spinning the cable connector. DO NOT spin the antenna onto the cable or DAMAGE may
occur.
2. Thread the pipe nipple into the base of the antenna and snug by hand.
3. Mount the pipe nipple to a fixture, such as our Antenna Mounting Kit.
4. Install GNSS Surge Protector or In-Line Preamplifier if needed. Reference their respective instruc-
tions.
5. Connect the antenna cable to the clock.
Arbiter Systems, Inc. · 1324 Vendels Circle, Suite 121 · Paso Robles, CA 93446 · USA · Tel: +1.805.237.3831
2 Fax: +1.805.238.5717 · E-mail: techsupport@arbiter.com · Internet: http://www.arbiter.com
MODEL 1201B/C SETUP GUIDE
B1234
Arbiter Systems
Serial Number
Made in USA
ANTENNA
FIBER
COM1
RELAY
COM2
INTERNAL OPTION SPACE
POWER B POWER A
1
I/O PORTS
2 3
ANTENNA
STATUS
Figure 3: Rear Panel
Connecting Signal Cables
1. Pluggable terminal block: Strip the insulation 1/4 inch and DO NOT tin.
2. RS-232 Ports: Null-modem cable with female DB-9 connectors required.
3. Options: Refer to manual
Connecting Power Cables
• VERIFY that the voltage level is in the correct range.
• VERIFY that the polarity is as specified on the label.
• Strip the insulation 1/4 inch and DO NOT tin.
• A fuse is located to the left of each installed power inlet connector.
Configuring with Front Panel
• Press SETUP to cycle through the menu structure.
• Press ENTER to select the menu.
• Press UP or DOWN to change the selection.
• Press ENTER to confirm selection.
• Press any of the top row keys to leave the configuration menu.
Configuring with Utility Software
Utility Software is available from www.arbiter.com
Additional Help
The operation manual is available as a free download from www.arbiter.com or to purchase.
Arbiter Systems, Inc. · 1324 Vendels Circle, Suite 121 · Paso Robles, CA 93446 · USA · Tel: +1.805.237.3831
Fax: +1.805.238.5717 · E-mail: techsupport@arbiter.com · Internet: http://www.arbiter.com 3
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