GPS Receiver to H-Clk Cable Description and Parts List ---------------------------------------------------------- Orig. Rev. 10-Jan-2012 Current Rev. 30-May-2012 This file describes the cable that is used to connect the GPS Receiver to the H-Clk card's front panel 16 pin "GPS Receiver" connector. Installations of the H-Clk card will use a GPS Receiver made by a company called Navsync which is a division of Connor-Winfield. Navsync refers to the GPS Receiver as a GPS Sensor. The Navsync model that is currently being used with the H-Clk installations is model number CW46S-RS232. These sensors cost about $244 in unit quantity. H-Clk GPS Receiver Connector ---------------------------- The pinout of the 16 pin "GPS Receiver" connector on the H-Clk card's front panel is shown in the following table. This connector is a standard 16 pin 2x8 0.1" x 0.1" 25 mil square pins 90 degree 4 wall header with latches, e.g. 3M Part No. 3408-5002 Pin Function --- ---------- 1 H-Clk RS-232 Transmit data to the CW46S receiver 2 Gnd 3 GPS Power 4 GPS Power 5 Gnd 6 Gnd 7 1 PPS + 8 1 PPS - 9 Gnd 10 Gnd 11 10 MHz Sine Wave 12 Gnd 13 Gnd 14 Gnd 15 H-Clk RS-232 Received data from the CW46S receiver 16 Gnd Navsync CW46S GPS Receiver Connector ------------------------------------ The following table shows the pinout of the round connector on the bottom of the CW46S connector. I believe that the matching Bulgin IP68 cable connector is part number: PX0410/10P/6065. The CW46S-RS232 receiver pinout appears to be: Pin CW46S Function --- --------------------------------------- 1 Not Connected 2 Serial Transmit -- CW46S Output 3 Serial Receive -- CW46S Input 4 Pulse Per Sec + \__ RS-422 5 Pulse Per Sec - / 6 10 MHz Sine Wave 3.1 Vpp into 100 Ohm 7 Cable Shield Cable Shield 8 Not Connected 9 Supply Voltage +6.5V to +30 V about 100 mA 10 Ground and Power Supply Return Connection NAVSYNC CW46 Round Connector pinout: Looking into the connector on the CW46 Receiver 1 2 8 3 9 10 7 4 6 5 \_______ Key Notes about the pinout of the Bulgin IP68 connector on the CW46S RS232 receiver. - On the CW46S-RS232 receiver (single cable receiver) pin #7 of the Bulgin IP68 is nearest the TIM-25 module on the circuit board. Of the 2 "center pins", pin #10 is nearer the TIM-25 module. - Pin #1, named "Not Connected", is actually tied to pin #8 on the MAX3232, i.e. receiver #2 input. - Pin #2, named "Serial Transmit rs232 Output", is tied to pin #14 on the MAX3232, i.e. transmitter #1 output. - Pin #3, named "Serial Receive rs232 Input", the furthest pin from the TIM-25, is tied to pin #13 on the MAX3232, i.e. receiver #1 input. - Pin #4, named "PPS+", is tied to pin #9 on the MAX3089, This signal comes from pin #38 on the TIM-25. - Pin #5, named "PPS-", is tied to pin #10 on the MAX3089, This signal comes from pin #38 on the TIM-25. - Pin #6, named "10M", the 10 MHz single ended output, is tied to via "J2" on the pcb, and ties up through C29, C31, L2, R18, C30, U7, C18, R17 and comes from pin #39 on the TIM-25. I think that this is a capacitor coupled output. - Pin #7 the "C Shield" appears to tie to the ground plane in the CW46S receiver through a capacitor. - Pin #8, named "Not Connected", is actually tied to pin #7 on the MAX3232, i.e. transmitter #2 output. - Pin #9, named "Vin, is tied to the big via "S1 1" near the connector and then runs to series diode D5 and capacitor C5 before going into the switching power supply which is maybe on its own ground plane. - Pin #10, named "GND", is tied to the ground plane on the CW46S pcb. - The keyway on the Bulgin IP68 connector on the receiver is between pins 5 and 6. Looking at the pin entry side of this connector on the bottom of the receiver, the pins are numbered CCW. - The 10 MHz signal is about 3.2Vpp open circuit. It is AC coupled in the CW46S receiver so it swings about +-1.6V wrt ground. It is a rather nice sine waveform. With a 100 Ohm load it is about 2.2 Vpp. - The 1 PPS signal was only looked at differentially with a 100 Ohm load. The pulse is about 100 usec wide. The positive side swings from about +1.2V and pulses up to about +3.7V. The negative side swings from about +3.7V and pulses down to about +1.3V. The positive going edge of the positive pulse side is in sync with the zero crossing of the 10 MHz signal, i.e. their positive edges happen at the same time. GPS Receiver to H-Clk Cable Parts List -------------------------------------- - Connector at H-Clk end: Cable mount connector 16 pin F 3M No 89116-0101 Strain Relief for the above 3M No 3448-89116 Cable mount connector 16 pin M 3M No 4616-6001 Strain Relief for the above 3M No 3448-4616 !! metal - Connector at CW46S end: Bulgin IP68 cable connector Housing: Bulgin Part No. PX0410/10P/6065 6.0 to 6.5 mm cable entry Contacts: Bulgin Part No. SA3180/1 packet of 10 solder contacts Tool: Bulgin Part No. 13027 insert/extract tool - Cable: 16 conductor 8 pair twist-flat cable 3M Part No. 1700/16 GPS Receiver to H-Clk Cable Wiring Diagram ------------------------------------------ GPS Cable Receiver Conductor H-Clk Pin No. Color Pin No. Function -------- --------- ------- ------------------------------- 3 ---- Brown --- 1 RS-232 Data to the GPS Receiver 7,10 ---- Tan --- 2 Gnd 9 ---- Red ---- 3 Power to the GPS Receiver 9 ---- Tan ---- 4 Power to the GPS Receiver 7,10 --- Orange --- 5 Gnd 7,10 --- Tan --- 6 Gnd 4 --- Yellow --- 7 1 PPS Direct 5 --- Tan --- 8 1 PPS Complement 7,10 ---- Green --- 9 Gnd 7,10 --- Tan --- 10 Gnd 6 ---- Blue ---- 11 10 MHz sine wave 7,10 ---- Tan ---- 12 Gnd 7,10 --- Violet --- 13 Gnd 7,10 --- Tan --- 14 Gnd 2 ---- Gray ---- 15 RS-232 Data from the GPS Receiver 7,10 ---- Tan ---- 16 Gnd At the GPS Receiver connector end of the cable all 9 Ground wires in the 16 conductor cable are tied to pins 7 and 10 in the Bulgin connector. Note added 16-Mar-2012 ---------------------- If for some testing you want to connect the H-Clk's RS-232 signals to a PC running a terminal program the following cable setup could be used. PC Term End H-Clk End 9 pin Female 2x8 Connector "DB-9" Signal/Direction ------------- ------------ -------------------- 1 2 H-Clk Data to the PC 15 3 PC Data to the H-Clk 14 5 Signal Ground Note Added 21-July-2012 ------------------------ To make it easy to plug the 16 pin IDC cable connector into the front-panel GPS receptacle on the H-Clk card it is necessary to file a little bit of the center indexing key off of the IDC cable connector. This is necessary to provide sufficient clearance between the indexing key and the front panel mounting block that is on top of the H-Clk card's GPS receptacle. File off just enough to provide the necessary clearance but still guarantee the proper alignment of the IDC cable connector in the H-Clk card.