Gill HS-50 User manual

HS-50 & HS-100 Doc. No 1199-PS-0035 Issue 3 June 2021
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Page 1
1FOREWORD..................................................................................................................3
2INTRODUCTION..........................................................................................................3
3PACKING LIST.............................................................................................................4
4OPTIONAL EXTRAS ...................................................................................................4
5PRINCIPLE OF OPERATION....................................................................................5
6TECHNICAL SPECIFICATION.................................................................................6
7INSTALLATION...........................................................................................................7
7.1 Handling Instructions....................................................................................................................... 7
7.2 Installation Guidelines..................................................................................................................... 8
7.3 Mounting............................................................................................................................................ 8
7.4 Polar definition.................................................................................................................................. 9
7.5 U, V, and W Axes definition (See fig 2)........................................................................................ 9
7.6 Alignment, Dimensions & Orientation........................................................................................... 9
7.7 Mechanical installation.................................................................................................................. 10
7.8 Location........................................................................................................................................... 10
7.9 Corrosion......................................................................................................................................... 10
7.10 Earthing....................................................................................................................................... 10
7.11 Cabling......................................................................................................................................... 11
7.12 Cable length................................................................................................................................ 11
7.13 20 Way Hirose Connector......................................................................................................... 12
8OPERATION................................................................................................................13
8.1 Overview ......................................................................................................................................... 13
8.2 Operating modes............................................................................................................................ 13
8.3 Measurement Mode....................................................................................................................... 13
8.4 Sampling ......................................................................................................................................... 13
8.5 Averaging........................................................................................................................................ 13
8.6 Wind Measurement, SoS and Temperature Reporting Format .............................................. 14
8.7 Analogue Input Reporting Formats ............................................................................................. 14
8.8 Diagnostics ..................................................................................................................................... 14
8.9 Confidence Tone............................................................................................................................ 14
8.10 Result Reporting ........................................................................................................................ 14
8.11 Interactive Mode......................................................................................................................... 15
8.12 Configuration Commands......................................................................................................... 15
8.13 Default Configuration Command Settings.............................................................................. 15
8.14 Default Output Data String ....................................................................................................... 15
8.15 Interrogation Commands .......................................................................................................... 15
9CONNECTION TO A PC OR OTHER DEVICE ....................................................16
9.1 Anemometer Connector / SIU Power and Data Connector..................................................... 16
10 CONNECTING AN HS UNIT TO A PC USING RS 422.....................................17
10.1 Connecting an HS Unit to a PC via Power and Communications Interface (PCI 1189-PK-
021 or PCIA 1189-PK-020) ...................................................................................................................... 17
10.1.1 Environmental......................................................................................................................... 17
10.1.2 PCI/PCIA Electrical Power Requirements.......................................................................... 18
10.1.3 PCI/PCIA Operation. ............................................................................................................. 18
10.1.4 PCIA Box (1189-PK-020) HS Analogue Output Connections......................................... 20
10.1.5 Gill Instruments HS to PCI/A Ready Made Gill Cable 1210-PK-043.............................. 21
11 SYSTEM CONNECTION DIAGRAMS ................................................................23
11.1 System Connection.................................................................................................................... 23
11.2 1199-00-015 Interface Cable ................................................................................................... 24
12 USING THE ANALOGUE INPUTS WITH THE HS ELECTRONICS UNIT .25
12.1 Analogue Inputs ......................................................................................................................... 25
12.2 Using the Electronics Unit PRT Input...................................................................................... 26
12.3 Electronics Unit Mounting Details............................................................................................ 27
13 CONFIGURING THE ANEMOMETER WITH A PC RUNNING GILL WIND
SOFTWARE........................................................................................................................28
13.1 Software commands Introduction............................................................................................ 30
13.2 Software Commands................................................................................................................. 31
14 USING THE ANEMOMETER DIGITAL OUTPUTS.........................................34
14.1 Digital Serial Output Format..................................................................................................... 34
14.1.1 Binary Result Message Format (post conversion)............................................................ 34

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14.1.2 ASCII Result Message Format ............................................................................................ 35
14.2 Status Fields............................................................................................................................... 36
14.2.1 Inclinometer Readings.............................................................................................................. 39
15 USING ANALOGUE OUTPUTS WITH PCIA BOX...........................................41
(1189-PK-020)......................................................................................................................41
15.1 Introduction................................................................................................................................. 41
15.2 Analogue outputs....................................................................................................................... 41
15.3 Analogue Sync. Output............................................................................................................. 42
15.4 Analogue Status Output............................................................................................................ 42
15.5 Test Modes................................................................................................................................. 42
16 VIEWING & LOGGING THE DATA USING GILL WINDVIEW
SOFTWARE........................................................................................................................43
17 INSTRUCTIONS FOR USING WINDCONVERT BINARY TO ASCII
CONVERSION UTILITY..................................................................................................49
18 MAINTENANCE & FAULT-FINDING ................................................................51
18.1 Cleaning ...................................................................................................................................... 51
18.2 Servicing...................................................................................................................................... 51
18.3 Fault-finding................................................................................................................................ 51
18.4 Status (error) codes................................................................................................................... 51
18.5 Returning units ........................................................................................................................... 51
19 TESTS........................................................................................................................51
19.1 Bench test................................................................................................................................... 51
19.2 Head Alignment Test................................................................................................................. 52
19.3 Calibration................................................................................................................................... 52
20 APPENDIX A............................................................................................................53
Summary Of Abbreviations Used In This Manual................................................................................. 53

HS-50 & HS-100 Doc. No 1199-PS-0035 Issue 3 June 2021
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1 FOREWORD
Thank you for purchasing a HS-50 or HS-100 manufactured by Gill Instruments Ltd. The units have
no customer serviceable parts and require no calibration or maintenance. To achieve optimum
performance we recommend that you read the whole of this manual before proceeding with further
use.
Gill products are in continuous development and so specifications may be subject to change without
prior notice.
The information contained in this manual remains the property of Gill Instruments and should not be
copied or reproduced for commercial gain.
2 INTRODUCTION
This manual describes the operation of the HS-50 (1199-PK-102) and HS-100 (1199-PK-085)
The term HS is used in this manual as a general term for both the HS-50 & HS-100; they are robust
three axis anemometers with no moving parts.
The units of wind speed, output rate and formats are all user selectable.
Both the HS-50 & HS-100 are constructed of stainless steel & can perform measurements in wind
speeds up to 45m/s.
The HS-50 can provide an output rate up to 50Hz and the HS-100 can provide an output rate up to
100Hz.
Each unit is calibrated in a wind tunnel to ISO 16622, traceable to national standards.
WIND software is available free from the Gill website http://gillinstruments.com/main/software.html. It
can be used as a terminal package to configure the anemometers
WINDVIEW software is available free from the Gill website
http://gillinstruments.com/main/software.html. It provides a means of viewing data and providing a
simple data logging function.
WinConvert software is available free from the Gill website
http://gillinstruments.com/main/software.html. It provides a means of converting data gathered in
binary format and converting it to a user readable format.

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3 PACKING LIST
Item
Part Number
Model Supplied
HS-50
HS-100
HS Anemometer Frame
As Shown
1199-10-057
1199-10-057
HS Electronics Box
1199-00-027


Cable Assembly HS
head to Electronics Box
1199-00-015


20-way Hirose
Connector
020-01559


Power &
Communications
Interface incl Analogue
1189-PK-020


Flight Case
1210-30-074


4-way Connector
020-00978


Mains Lead
026-00244


Plug 10 Pin Round
020-00290


Plug 8 Pin Round
020-00291


4 OPTIONAL EXTRAS
Item
Part Number
Power & Communications Interface –PCIA,
Anemometer Power Supply &
Communications, including Analogue & Digital
Outputs
1189-PK-020
Power & Communications Interface –PCI,
Anemometer Power Supply &
Communications, Digital Output Only
1189-PK-021
Gill Instruments Anemometer Cable (RS422 &
Power)
1086-M-043/XXm
20-way Hirose Connector
020-01559

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5 PRINCIPLE OF OPERATION
Figure 1 Time of Flight details
The HS measures the times taken for an ultrasonic pulse of sound to travel from an upper
transducer to the opposite lower transducer, and compares it with the time for a pulse to travel from
lower to upper transducer.
Likewise times are compared between each of the other upper and lower transducers.
As Figure 1 shows, the air velocity along the axis between each pair of transducers can then be
calculated from the times of flight on each axis.
This calculation is independent of factors such as temperature.
From the three axis velocities, the wind speed is calculated, as either signed U, V, and W, or as
Polar and W.
It can be seen from Figure 1 that the speed of sound in air can be calculated from the times of flight.
From this the sonic temperature can be derived from the formula TS1 = C12 / 403
Where
TS1 =Sonic temperature
C1 = Speed of sound
Note the formula does not account for the effect of Humidity
Crosswind correction is applied to results.

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6 TECHNICAL SPECIFICATION
* Accuracy specification applies for wind speeds less than 32m/s and for wind incidence < ±150° in the
horizontal plane and up to ±50° from the horizontal.
Parameter
HS-50
HS-100
Outputs
Data Output rates
From 0.4 to 50Hz
From 0.4 to 100Hz
Measurement Rate
50Hz (Full 3 axis measurement)
100Hz (Full 3 axis measurement)
Format
UVW or Polar (ASCII or Binary)
UVW or Polar (ASCII or Binary)
Wind Speed
Range
0 - 45 m/s
0 - 45 m/s
Resolution
0.01m/s
0.01m/s
Wind Speed Accuracy *
<1%RMS @ 12m/s
<1%RMS @ 12m/s
Wind Speed Offset
<±0.01ms
<±0.01ms
Direction
Range
0 –359
0 –359
Resolution
10
10
Directional Accuracy *
<±1RMS
<±1RMS
Speed of Sound Measurement
Measurement Rate
50Hz
100Hz
Range
300 -370 m/s
300 -370 m/s
Resolution
0.01 m/s
0.01 m/s
Accuracy *
< 0.5% (For wind speeds <30ms)
< 0.5% (For wind speeds <30ms)
Supply Input
Supply Voltage
9 to 30VDC
9 to 30VDC
Anemometer Supply Current
<300mA for 12VDC Input
<150mA for 24VDC Input
<300mA for 12VDC Input
<150mA for 24VDC Input
Environmental
Operating Temperature
-40°C to +60°C
-40°C to +60°C
Storage Temperature
-50°C to +75°C
-50°C to +75°C
Altitude
0 to 3000m
0 to 3000m
Moisture/Dust Protection
IP65
IP65
Humidity
5 % to 100 %
5 % to 100 %
Precipitation
Operation up to 300 mm / hour
Operation up to 300 mm / hour
EMC
Emissions BS EN 50081 -1:1992
Immunity BS EN 50082 -1:1992
Emissions BS EN 50081 -1:1992
Immunity BS EN 50082 -1:1992
Input/Output Protection
>0.8J
>0.8J
Serial Interface
Electrical Interface
Full Duplex RS422
Full Duplex RS422
Baud Rates
2400, 4800, 9600, 19200, 38400,
57600, 115200
2400, 4800, 9600, 19200, 38400,
57600, 115200
Format
8 data bits, 1 stop bit, No Parity
8 data bits, 1 stop bit, No Parity
Analogue Inputs
Sampling Rate: measurement
50Hz Synchronous to wind
100Hz Synchronous to wind
Diff. Input Voltage Range
-5.000V to +5.000V
-5.000V to +5.000V
Accuracy
>0.05% of full scale
>0.05% of full scale
Resolution
14 bits
14 bits
Common Mode Input Range
>±8v
>±8v
Input Impedance
>1MΩ (Differential)
>1MΩ (Common Mode)
>1MΩ (Differential)
>1MΩ (Common Mode)
PRT
Resolution
0.01°C
0.01C
Measurement Accuracy
<±0.1°C (-40 to +50°C)
<±0.1°C (-40 to +50°C)
<±0.15°C (+50 to +60°C)
<±0.15°C (+50 to +60°C)
Anemometer Sync Output
RS422 synchronous to Wind Measurement
RS422 synchronous to Wind Measurement
Inclinometer
Range
Monotonic over ±30°of tilt
Monotonic over ±30°of tilt
Resolution
0.01°
0.01°
Accuracy
±0.3°for tilt angles between ±10°
±0.3°for tilt angles between ±10°
Null Repeatability
±0.15°
±0.15°
Temperature Coefficient-Null
0.02°per °C
0.02°per °C
Temperature Coefficient –Scale Factor
0.2% per °C
0.2% per °C

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7 INSTALLATION
7.1 Handling Instructions
The HS frame should be stored and transported in the supplied flight case.
If the frame is removed from the flight case (for instance, to carry out a bench test), the protective
head cover should be left in place to protect the transducers. If the head cover is removed, care
must be taken to protect the transducers from damage/distortion as this will affect the accuracy of
the measurements made.
The transducers should not be used to support the weight of the frame if it is rested on a flat surface
(such as a table), as this will distort the path lengths. The protective head cover should be left on
under these circumstances.
When handling the frame, ensure that it is picked up by the main arm, not the frame around the
transducer assembly.
Handle the HS frame highlighted in
the green section only.
Handling the HS frame by the
measurement area (highlighted in
red) may result in damage to the
unit.
Ideally the HS frame should be kept
in the flight case with the Head
cover in place up until
deployment/installation.

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7.2 Installation Guidelines
As with any sophisticated electronics, good engineering practice should be followed to ensure
correct operation.
Always check the installation to ensure the HS is not affected by other equipment operating
locally, which may not conform to current standards, e.g. radio/radar transmitters, boat
engines, generators etc.
Guidelines –
oAvoid mounting in the plane of any radar scanner –a vertical separation of at least 2m
should be achieved.
oRadio transmitting antennas, the following minimum separations (all round) are suggested.
VHF IMM –1m
MF/HF –5m
Satcom –5m (avoid likely lines of sight)
Use cables recommended by Gill. If cables are cut and re-connected incorrectly (perhaps in a
junction box) then EMC performance may be compromised if cable screen integrity is not
maintained.
Earth loops should not be created –wire the system in accordance with the installation
guidelines.
Ensure the power supply operates to the HS specification at all times.
Avoid turbulence caused by surrounding structures that will affect the accuracy of the HS such
as trees, masts and buildings.
The World Meteorological Organisation makes the following recommendation:
The standard exposure of wind instruments over level open terrain is 10m above the ground.
Open terrain is defined as an area where the distance between the sensor and any obstruction
is at least 10 times the height of the obstruction.
If the sensor is to be mounted on a mast boom, part way up a tower or mast, then the boom
should be at least twice as long as the minimum diameter or diagonal of the tower. The boom
should be positioned on the prevailing wind side of the tower.
If mounted on a pole then as a guide the distance from an adjacent pole should be 10 times
the other pole diameter.
If mounting on a building then as a guide the sensor should be mounted at a height of 1.5
times the height of the building.
7.3 Mounting
Please see pages 8 to 11 for information on alignment and mounting of the HS.

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7.4 Polar definition
The wind speed in the UV plane, with direction in degrees from 0 to 359, with respect to the
Reference spar (which is normally aligned to North).
7.5 U, V, and W Axes definition (See fig 2).
+U is defined as towards the direction in line with the north spar as indicated in the diagram.
+V is defined as towards the direction of 90anti-clockwise from N / the Reference spar.
+W is defined as vertically up the mounting shaft.
Note, when the unit is configured for the ALIGN AXIS setting the UV definition rotates 30 degrees
anti-clockwise such that U is now in line with transducer axis 1.
7.6 Alignment, Dimensions & Orientation
It is recommended that the head is aligned so that the upper transducer sphere is directly above the
lower transducer sphere. The inclinometer has been calibrated to read zero on both axes when this
position is reached.
Figure 2 shows the direction and polarity for the UVW axes
Figure 3 shows the dimension & alignment information for the system.
Figure 2 U, V and W Axes Definition

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Figure 3 Dimensions & Alignment Details
7.7 Mechanical installation
Before installing, it is strongly recommended that a bench test is carried out.
7.8 Location
Select a position so that the unit is clear of any structure, which may obstruct the airflow or induce
turbulence.
Do NOT mount the HS in close proximity of high-powered radar or radio transmitters. A site survey
may be required if there is any doubt about the strength of external electrical noise.
7.9 Corrosion
Galvanic corrosion is possible unless stainless steel fixings are used for mounting the head and
electronics unit. This will ensure that the anemometer will provide long service in extreme
conditions such as a marine environment, for example.
7.10 Earthing
For maximum protection against lightning the anemometer must be earthed via its mountings. The
Electronics unit and PCI/PCIA should be earthed using the earth studs provided.
Inadequate grounding will degrade anemometer performance, particularly in the presence of radio
frequency interference.
The unit MUST be connected to an appropriate grounding point with a minimum of 6mm² copper
wire, via the M4 base screws. The primary earth for the anemometer must be provided via the earth
stud and not via the cable screens.

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7.11 Cabling
Ensure that strain relief measures are employed when installing the cables. Do not allow the whole
weight of a cable to be applied to the connector.
An RS422 compatible cable should be used, with the number of twisted pairs matching the
application.
Generic description –Twisted pairs with drain wire, screened with aluminised tape, with an overall
PVC sheath.
Typical Wire size 7/0.2mm (24AWG), 22AWG wire may also be used.
The table shows some suitable manufacturers’ references; other manufacturers’ equivalents can be
used.
No. of pairs
Gill ref.
Belden ref.
Batt electronics ref.
9
026 - 02663
8774
91009
The cable allows for the connection of all: -
Power inputs.
Digital data inputs and outputs.
Other example twisted pair screened cable types (24AWG) are:-
No. of pairs
Gill ref.
Belden ref.
Batt electronics ref.
2
-
9729
-
3
026 - 02660
9730
91030
4
026-03156
9728
91199
6
-
9731
91031
7.12Cable length
The maximum cable length is dependent on the chosen communication format (RS232, RS422 or
RS485), the baud rate, and, to a lesser extent, on the cable type and the local electrical ‘noise’
level.
The above table shows the typical maximum lengths at the given baud rates, using the
recommended cable. If any problems of data corruption etc. are experienced, then a slower baud
rate should be used. Alternatively, a thicker or higher specification cable can be tried.
Communication format
Baud rate
Max. cable length
RS232 (PCIA Output)
9600
6.5 m (20 ft) or if using Cat 5 cable see
manufacturers recommendations
RS422
9600
1 km (3200 ft)
Analogue outputs - voltage
N/A
6.5 m (20 ft)

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7.1320 Way Hirose Connector
1 Pin Connections, rear of 20-way Hirose 2. Pin Connections, contact side of 20-way Hirose
Pin Number
Designation
1
Reserved
2
RS422 Tx+
3
RS422 Tx-
4
RS422 Rx+
5
RS422 Rx-
6
Supply +ve
7
Reserved
8
Reserved
9
Chassis
10
Anemometer Sync -
11
Not Connected
12
Not Connected
13
Digital 0v
14
Supply –ve
15
Reserved
16
Reserved
17
Reserved
18
Anemometer Sync +
19
Reserved
20
Reserved
Assembly of the 20-way Hirose connector is shown below:
The outer sheath needs to be cut back by 45mm and the individual wires need to have their
insulation stripped back by 3mm.

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8 OPERATION
8.1 Overview
Data output rates up to 100Hz (model dependant).
Measurement of wind velocities to 45ms.
Wind speed accuracy < 1% RMS.
Configuration carried out via serial port and stored in non-volatile memory.
High speed, full duplex RS422 interface, operating up to 115200 baud.
Background diagnostics providing the user with the confidence that the unit is operating
correctly.
Optional Sensor Input Unit provides six differential 14 bit analogue inputs and one PRT100
input.
Optional Power & Communications Interface with 4 Analogue outputs representing wind speed
and Speed of Sound or Sonic Temperature.
8.2 Operating modes
The anemometer has two operating modes:
1. Measurement mode - This is the normal mode of operation, which is the default mode from
power up.
2. Interactive mode - This allows the anemometer to be configured and interrogated.
8.3 Measurement Mode
The principle of operation is described in Section 5 (page 5). The parameters sampled are
determined by the anemometer’s configuration and consist of:
1. Wind velocity (axis velocities are always sampled)
2. Speed of Sound (SoS)
3. Analogue Inputs (6)
4. Absolute Temperature (PRT100)
The way in which the results are calculated, formatted and reported depends upon the configuration
of the anemometer.
8.4 Sampling
Wind velocity, SoS and analogue inputs are sampled every 10ms, in a fixed sequential pattern. The
PRT100 is sampled every 40ms. The measurement sequence is shown in Drawing Number 1210-
K-068 on page 42.
8.5 Averaging
These samples are block averaged before being converted into results. For wind speed, SoS and
analogue inputs the number of samples used in the block average can be set to between 1 and 250
(HS-100) or 2 and 250 samples (HS-50).
E.g. Default Average Setting is 5 therefore Output Rate = 100/5 = 20Hz.
The corresponding maximum number of PRT100 samples per result is 62.

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8.6 Wind Measurement, SoS and Temperature Reporting Format
The wind measurement can be output in one of the following formats:
1. U, V & W, calibrated (ms)
2. U, V & W, uncalibrated (ms)
3. Polar & W, calibrated (° & ms)
4. Polar & W, uncalibrated (° & ms)
5. Axis velocities, uncalibrated (ms)
In U, V,W modes the alignment of the U and V axes can be selected as follows:-
Axis U in line with Axis 1 when the anemometer is viewed from above.
Spar U is in line with the main spar when viewed from above. In this configuration U, V, W are
labelled U', V', W'.
The U, V, W axis alignment options are shown in the relevant U, V, W axis definition drawing on
page 8, figure 2.
The axis alignment can be selected using the Configuration menu and the ALIGNUVW command if
using your own PC software.
The speed of sound measurement results can be output in one of the following formats:
1. Speed of Sound (ms)
2. Sonic Temperature (K)
3. Sonic Temperature (°C)
Speed of sound measurements can be disabled.
The absolute temperature measurement results can be output in one of the following
formats:
1. Absolute Temperature (K)
2. Absolute Temperature (°C)
Absolute temperature measurements can be disabled.
8.7 Analogue Input Reporting Formats
If ASCII format is selected, analogue input measurements are output in volts to 4 decimal places. If
binary format is selected, analogue input measurements are output in 2's complement.
The number of analogue inputs to be measured can be set from 0 to 6.
8.8 Diagnostics
The system reports error codes if a failure is detected of the ultrasonic transducers, non-volatile
memory or PRT.
8.9 Confidence Tone
This function is enabled by default, normal operation is indicated by an repetitive tone within the
anemometer.
To turn off the Confidence Tone place the unit into Interactive Mode and use the command CTONE
DISABLE.
8.10Result Reporting
The selected parameters are blocked together along with the diagnostic results and block control
information to form a result message. The result message can either be in a Binary or ASCII format.
In the ASCII format the fields can be padded to form a fixed field size if required. The way the result
message is transmitted is dependent on the reporting mode:
1. Continuous mode - the result message is transmitted immediately after calculation.
2. Polled mode - the host pc requests data from the anemometer. The anemometer responds
by sending the current result message.

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8.11Interactive Mode
Interactive mode is entered from measurement mode, by sending the anemometer the appropriate
command. In this mode the user can communicate with the anemometer, issuing configuration
commands to the anemometer, or requesting information from the anemometer.
8.12Configuration Commands
Configuration commands allow the user to configure the anemometer as required. The
configuration parameters are held in non-volatile storage, allowing the anemometer to retain its
current configuration when powered down.
8.13Default Configuration Command Settings
Factory settings are:-
AVERAGE 5
WINDREP UVW CAL
SOSREP SONICTEMP K
ABSTEMP OFF
ANAIP DDDDDD (DISABLED)
AOPFSD 30
POLARWRAP 360
STRFMT ASCII UNPAD
ASCTERM CRLF
ECHO ON
MSGMODE CONT
BAUD 9600
CTONE ON
ALIGN AXIS
INST OFF
8.14Default Output Data String
The Structure of the Factory HS Default Output Data String is as follows:-
Status Codes, U, V, W, Speed of Sound, Checksum.
01,08,+00.01,+00.00,+00.00,343.50,12
02,18,+00.01,+00.00,+00.00,343.50,10
03,00,+00.01,+00.00,+00.00,343.50,18
04,00,+00.01,+00.00,+00.00,343.50,1F
05,00,+00.01,+00.00,+00.00,343.50,1E
06,02,+00.01,+00.00,+00.00,343.50,1F
07,00,+00.01,+00.00,+00.00,343.50,1C
08,09,+00.01,+00.00,+00.00,343.50,1A
09,FF,+00.01,+00.00,+00.00,343.50,12
10,EB,+00.01,+00.00,+00.00,343.50,1D
8.15Interrogation Commands
Interrogation commands allow the user to request a variety of information from the anemometer.
E.g. ?, CONFIG, EXIT, HELP, IM, SN, VER and VERIFY.
See Para 13.2.

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9 CONNECTION TO A PC OR OTHER DEVICE
Connection to a PC or other device requires the use of:
1. Either a standard PCI or PCIA
2. Or a suitable alternative power supply and RS422 conversion unit, which meets the
specification of the anemometer.
The PCIA supplies power for the anemometer and provides conversion of the RS422 signal sent by
the anemometer and the RS232 signal required by a PC. The PCIA requires connection to a mains
power supply or DC.
The anemometer outputs data in RS422 format, which can be reconstituted to analogue via the
optional PCIA.
Baud rate options are:
1. 2400
2. 4800
3. 9600
4. 19200
5. 38400
6. 57600
7. 115200 (Note: if changing a unit to 115200 Baud rate ensure that the connecting device
supports 115200 baud e.g. RS422 converter, PC/Laptop etc.).
Data format:
8 data, 1 stop, no parity.
9.1 Anemometer Connector / SIU Power and Data Connector
Hirose 20 way socket
Connector pin Designation
1 Reserved
2 RS422TXB (Data from anemometer)
3 RS422TXA (Data from anemometer)
4 RS422RXB (Data to anemometer)
5 RS422RXA (Data to anemometer)
6 Supply V+
7 Reserved
8 Reserved
9 Chassis
10 Anemometer Sync-
11 Not used
12 Not used
13 Digital 0V, signal ground
14 Supply V-
15 Reserved
16 Reserved
17 Reserved
18 Anemometer Sync +
19 Reserved
20 Reserved
The above voltages are referenced to signal ground.

HS-50 & HS-100 Doc. No 1199-PS-0035 Issue 3 June 2021
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Page 17
10 CONNECTING AN HS UNIT TO A PC USING RS 422
HS Connector
PC with RS422 to
RS232/USB convertor
Signal Names
20 way Pin
No’s
Signal Name
RS422 Tx+
2
RS422 Rx+
RS422 Tx-
3
RS422 Rx-
RS422 Rx+
4
RS422 Tx+
RS422 Rx-
5
RS422 Tx-
Digital 0v
13
Signal Gnd
Supply V+
6
+ DC Supply (9-30v)
Supply V-
14
- DC Supply (0v)
10.1Connecting an HS Unit to a PC via Power and
Communications Interface (PCI 1189-PK-021 or PCIA 1189-
PK-020)
Dependent upon system requirements the HS unit can be operated with the Power and
Communications and Interface unit (PCI) or Analogue Output version (PCIA), which can be ordered
as an optional extra. Connect HS via RS422 port; then connect computer to RS232 port on
PCI/PCIA.
HS
20 Way Connector
PCI
15 Way D Type
Connector
PCI RS232
9 Way D Type
Connector
Computer
9 Way D Type
Connector
Signal
Names
Pin
No’s
Pin
No’s
Signal
Name
Signal
Name
Pin
No’s
Pin
No’s
Signal
Name
TX (+)
2
2
RXB (+)
TX(–)
3
9
RXA (–)
DCD
1
TX
2
2
RX
RX (+)
4
3
TXB (+)
RX (–)
5
10
TXA(–)
RX
3
3
TX
DTR
4
GND
5
5
GND
DSR
6
Digital 0v
13
4
DIGITAL
0V
RTS
7
CTS
8
RI
9
POWER V+
6
5
POWER
V+
POWER 0V
14
11
POWER
0V
10.1.1 Environmental
The Desktop PCI/PCIA is intended for use in a protected environment and provides interfacing to a
single anemometer. RS232 and RS422 ports are provided. The PCI/OCIA is not intended for
outdoor use.

HS-50 & HS-100 Doc. No 1199-PS-0035 Issue 3 June 2021
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Page 18
10.1.2 PCI/PCIA Electrical Power Requirements
1) 100Vac - 120Vac, 10VA from a mains supply for the 115V switch position.
2) 200Vac - 250Vac, 10VA from a mains supply for the 230V switch position.
3) 9 - 30Vdc, 55mA from an external low voltage supply for the anemometer (excluding
analogue outputs).
4) 8 - 18Vdc, 50mA max from an external low voltage supply for the interface box only.
3 fuses protect the unit:
1. Externally accessible 1 A (T) for 115/230v operation.
2. Internally accessible 500 mA (T) AUX.
3. Internally accessible 500 mA (T) ANEM.
10.1.3 PCI/PCIA Operation.
There are three Red LED’s on the PCI/PCIA front panel.
When the PCI/PCIA box is powered the Power LED will illuminate.
When a HS is connected as above to the PCI/PCIA box and is set to output continuous data the
box RX LED will flash on/off at the HS output rate thus giving a good indication that the HS output is
wired to the ox correctly and outputting RS422 data correctly.
If the PCI/PCIA RS 232 connection is connected to a computer then when a terminal programme is
opened and commands sent by a PC keypad or program to the box its TX LED will illuminate
intermittently indicating a good connection between the PC and the box. Connector Pin and Cable
Assignments for PCI/PCIA are as follows:-
Anemometer Connector 15 –Way
RS232 Output - 9 way
Pin
Designation
Pin
Designation
1
Screen
1
DCD
2
RS422_RXB (+)
2
TX data
3
RS422_TXB (+)
3
RX data
4
Digital 0V, Signal ground
4
DTR
5
Supply V+
5
Signal Ground
6
Anemometer Sync +
6
DSR
7
Not used
7
RTS
8
Anemometer Sync -
8
CTS
9
RS422_RXA (-)
9
RI
10
RS422_TXA (-)
11
Supply V-
12
Not Used
RS422/Network Input 9 Way
13
Not Used
Pin
Designation
14
Not used
1
Not connected
15
Not Used
2
Not connected
3
Not connected
External, DC Supply 4 - Way
4
RS422_RXA (-)
Pin
Designation
5
Signal ground
1
Interface Box V+
6
RS422_TXA (-)
2
Interface Box V-
7
RS422_TXB (+)
3
Anemometer Only V-
8
RS422_RXB (+)
4
Anemometer Only V+
9
Earth
Sync/Auxiliary Output 9 Way
Pin
Designation
1
Not Used
2
Not Used
3
Not Used
4
Not Used
5
Not Used
6
Anemometer Sync +
7
Anemometer Sync -
8
Not Used
9
Not Used
External D.C. Supply Amphenol C91A
Screw Lock 4 Way Socket, e.g. T3301 001.
View looking at pins
14
3
2

HS-50 & HS-100 Doc. No 1199-PS-0035 Issue 3 June 2021
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Page 19
Assembly of Amphenol C91A Screw Lock Socket