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The information below pertains to the pinouts of various Unidata products.

Prologger 37 Pin Female Input Signal Connector (Miniature DB37)


PIN SIGNAL DESC CHANNEL
1 Analog Ground  
2 Analog Input A1 (A1+ve)*
3 Analog Input A3 (A3+ve)
4 Analog Input A5 (A5+ve)
5 Analog Input A7 (A7+ve)
6 Analog Input A9 (A9+ve)
7 Analog Input A11 (A11+ve)
8 Analog Input A13 (A13+ve)
9 Analog Input A15 (A15+ve)
10 Sense Imput BIT 3
(Log Start, MASK 8)		 SENSE 0
11 16 Bit counter input (20 kHz) C0
12 16 Bit counter input (20 kHz) C2
13 High Speed Sychronous
Serial Port Clock
(TTL level input and output)		 HSIO Clock 1
14 High Speed Sychronous
Serial Port Clock
(TTL level input and output)		 HSIO Clock 0
15 Control, Open collector output, 30V, 100mA OUT1
16 External power +12V (or recharge) Power Input
17 +6V Continuous power for external instruments Micro Power
18 Scan synchronised +5V regulated UPS or
HSIO Sync (@30mA max)		  
19 Sense input BIT 1 (MASK 2) SENSE 1/SDI-12
20 Analog Input A0 (A0+ve)
21 Analog Input A2 (A2+ve)
22 Analog Input A4 (A4+ve)
23 Analog Input A6 (A6+ve)
24 Analog Input A8 (A8+ve)
25 Analog Input A10 (A10+ve)
26 Analog Input A12 (A12+ve)
27 Analog Input A14 (A14+ve)
28 Digital Ground Digital Ground
29 16 Bit counter with prescale (20kHz) C1
30 16 Bit counter with prescale (20kHz) C3
31 High Speed Sychronous
Serial Port Clock
(TTL level input and output)		 HSIO data 1
32 High Speed Sychronous
Serial Port Clock
(TTL level input and output)		 HSIO data 0
33 Control, Open collector output, 30V, 100mA
drive, 20ms pulse width		  
34 Power Ground Power Ground
35 +10V regulated user power source User Power
36 -12V, 5mA unregulated user power supply User Power
37 +12V, 200mA unregulated user power supply User Power

Starlogger 25 Pin Female Input Signal Connector (Miniature DB25):


PIN SIGNAL DESC CHANNEL
1 Analog Input a0
2 Analog Input a1
3 Analog Input a2
4 Analog Input a3
5 Analog Input a4
6 Analog Input a5
7 Analog Input a6
8 Analog Input a7
9 High Speed Syncronous
Serial Port 0
CMOS OUTPUT CLOCK 0		 HSIOCLOCK 0
10 High Speed Syncronous
Serial Port 0
CMOS BIDIRECTIONAL DATA 1		 HSIO DATA 1
11 16 Bit counter input (20 kHz) C0 (or c0 or c01)
12 16 Bit counter input (20 kHz) C2 (or c1 or c11)
13 +5V scan Synchronised User Power Source UPS
14 Analog Signal Ground Analog Ground
15 CMOS Output, HSIO Sync / Ground OUT 1/HSIO sync
16 Power Input (Recharge Battery/Operate logger) Power Input
17 Control Open Collector Output
30V maximum, 100mA drive		 OUT 0
18 +6V Continuous power for external instruments
(1 mA maximum)		 MICROPOWER
19 Sense input BIT 3 (Logstart, MASK 8) SENSE 0
20 Sense input BIT 1 (MASK 2) SENSE/SDI-12
21 High Speed Syncronous
Serial Port 0
CMOS BI-DIRECTIONAL DATA 0		 HSIO DATA 0
22 High Speed Syncronous
Serial Port 1
CMOS OUTPUT CLOCK 1		 HSIO CLOCK 1
23 Data Logger Power and Logic Ground Digital ground
24 16 Bit Counter Input (3kHz) C1 (or c0u)*
25 16 Bit Counter Input (3kHz) C3 (or c1u)*

Starlogger/Prologger 25 Pin Female Computer Connector:

Tick = Link Pin to Ground (Pin 7) (See - Starlogger Hardware Manual for details)

Baud Rate Computer Pins
17 16 15
300  
1200    
2400  
4800  
9600      
19200    
38400    
76800
Pin Description Usage
1 Signal and Logic Ground Ground
2 Serial Data Signal to Logger RXD
3 Serial Data Signal from Logger TXD
4 RTS from Computer RTS
6 DSR from Logger DSR to CPU
7 Signal Ground GND
10 Mode  
15 Baud Rate Select (See Table to Right)  
16 Baud Rate Select  
17 Baud Rate Select  
20 From Computer (Not Used) DTR
25 Remote Telemetry Control from Logger OUT 0

Starlogger 25 Pin to 9 Pin Cable Connections:

25-Pin (Male) 9-Pin (Female) Description
8 1 Carrier Detect
3 2 Recive Data
2 3 Transmit Data
20 4 Data Terminal Ready
7 5 Ground
6 6 Data Set Ready
4 7 Request To Send
5 8 Clear To Send
22 9 Ring Indicator

RS-232 DB25 Standard Pinouts:

Pin Signal Abbreviation DTE (Computer) DCE (Modem)
1 Shield/Frame (Earth) Ground GND - -
2 Transmit Data TxD Out In
3 Receive Data RxD In Out
4 Request to Send RTS Out In
5 Clear to Send CTS In Out
6 Data Set Ready DSR In Out
7 Signal Ground SGND - -
8 Data Carrier Detect DCD In Out
9 Test Voltage +Vdc +V In Out
10 Test Voltage -Vdc -V In Out
11 Unassigned - - -
12 Secondary DCD SDCD In Out
13 Secondary CTS SCTS In Out
14 Secondary TxD STxD Out In
15 Transmitted Signal Element Timing - In Out
16 Secondary RxD SRxD In Out
17 Received Signal Element Timing - In Out
18 Local Loopback LL Out In
19 Secondary RTS SRTS Out In
20 Data Terminal Ready DTR Out In
21 Remote LL / Signal Quality Detection RL/SQ Out/In In/Out
22 Ring Indicator RI In Out
23 Data Signal Rate Selector CH/CI Out In/Out
24 Transmit Signal Element Timing - Out In
25 Test Mode - In Out

DE9 EIA/TIA 574 Standard Pinouts:

Pin Signal Abbreviation DTE (Computer) DCE (Modem)
1 Data Carrier Detect DCD In Out
2 Received Data RxD In Out
3 Transmitted Data TxD Out In
4 Data Terminal Ready DTR Out In
5 Signal Ground SGND - -
6 Data Set Ready DSR In Out
7 Request to Send RTS Out In
8 Clear to Send CTS In Out
9 Ring Indicator RI In Out

SQL 7 Pin Plug (Face View):

Pin Desc (Standard) Desc (HSIO) Desc (Control)
1 +12V +12V +12V
2 RD RD RD
3 TD TD TD
4 RTS RTS RTS
5 SDI DATA SDI
6 OUT CLOCK CONTROL
7 GND GND GND

SQL 7 Pin Socket - Computer (Face View):

Pin Description
1 No Connect
2 RD
3 TD
4 RTS
5 No Conect
6 No Conect
7 GND

SQL 4 Pin Plug (Face View):

Pin Description
1 Relay N/O
2 -
3 -
4 Relay Common

SQL 4 Pin Socket (Face View):

Pin Description
1 Power +
2 -
3 -
4 Power -
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