PCB Piezotronics 8159 Series User manual

Model F8159-0013A
1 CHANNEL STRAIN GAGE SENSOR SIGNAL CONDITIONER
Installation and Operating Manual
For assistance with the operation of this product,
contact PCB Piezotronics, Inc.
Toll-free: 800-828-8840
24-hour SensorLine: 716-684-0001
Fax: [phone]
E-mail: [email protected]
Web: www.pcb.com

The information contained in this document supersedes all similar information that
may be found elsewhere in this manual.
Service –Due to the sophisticated
nature of the sensors and associated
instrumentation provided by PCB
Piezotronics, user servicing or repair is
not recommended and, if attempted,
may void the factory warranty. Routine
maintenance, such as the cleaning of
electrical connectors, housings, and
mounting surfaces with solutions and
techniques that will not harm the
physical material of construction, is
acceptable. Caution should be observed
to ensure that liquids are not permitted
to migrate into devices that are not
hermetically sealed. Such devices
should only be wiped with a dampened
cloth and never submerged or have
liquids poured upon them.
Repair –In the event that equipment
becomes damaged or ceases to
operate, arrangements should be made
to return the equipment to PCB
Piezotronics for repair. User servicing or
repair is not recommended and, if
attempted, may void the factory
warranty.
Calibration –Routine calibration of
sensors and associated instrumentation
is recommended as this helps build
confidence in measurement accuracy
and acquired data. Equipment
calibration cycles are typically
established by the users own quality
regimen. When in doubt about a
calibration cycle, a good “rule of thumb”
is to recalibrate on an annual basis. It is
also good practice to recalibrate after
exposure to any severe temperature
extreme, shock, load, or other
environmental influence, or prior to any
critical test.
PCB Piezotronics maintains an ISO-
9001 certified metrology laboratory and
offers calibration services, which are
accredited by A2LA to ISO/IEC 17025,
with full traceability to SI through
N.I.S.T. In addition to the normally
supplied calibration, special testing is
also available, such as: sensitivity at
elevated or cryogenic temperatures,
phase response, extended high or low
frequency response, extended range,
leak testing, hydrostatic pressure
testing, and others. For information on
standard recalibration services or
special testing, contact your local PCB
Piezotronics distributor, sales
representative, or factory customer
service representative.
Returning Equipment –Following
these procedures will ensure that your
returned materials are handled in the
most expedient manner. Before
returning any equipment to PCB
Piezotronics, contact your local
distributor, sales representative, or
factory customer service representative
to obtain a Return Warranty, Service,
Repair, and Return Policies and
Instructions Materials Authorization
(RMA) Number. This RMA number
should be clearly marked on the outside
of all package(s) and on the packing
Service, Repair, and Return
Policies and Instructions

list(s) accompanying the shipment. A
detailed account of the nature of the
problem(s) being experienced with the
equipment should also be included
inside the package(s) containing any
returned materials.
A Purchase Order, included with the
returned materials, will expedite the
turn-around of serviced equipment. It is
recommended to include authorization
on the Purchase Order for PCB to
proceed with any repairs, as long as
they do not exceed 50% of the
replacement cost of the returned
item(s). PCB will provide a price
quotation or replacement
recommendation for any item whose
repair costs would exceed 50% of
replacement cost, or any item that is not
economically feasible to repair. For
routine calibration services, the
Purchase Order should include
authorization to proceed and return at
current pricing, which can be obtained
from a factory customer service
representative.
Contact Information –International
customers should direct all inquiries to
their local distributor or sales office. A
complete list of distributors and offices
can be found at www.pcb.com.
Customers within the United States may
contact their local sales representative
or a factory customer service
representative. A complete list of sales
representatives can be found at
www.pcb.com. Toll-free telephone
numbers for a factory customer service
representative, in the division
responsible for this product, can be
found on the title page at the front of this
manual. Our ship to address and
general contact numbers are:
PCB Piezotronics, Inc.
3425 Walden Ave.
Depew, NY14043 USA
Toll-free: [phone]
24-hour SensorLineSM: [phone]
Website: www.pcb.com
E-mail: [email protected]

PCB工业监视和测量设备 - 中国RoHS2公布表
PCB Industrial Monitoring and Measuring Equipment - China RoHS 2 Disclosure Table
部件名称
有害物质
铅(Pb)
汞
(Hg)
镉
(Cd)
六价铬(Cr(VI))
多溴联苯 (PBB)
多溴二苯醚(PBDE)
住房
O
O
O
O
O
O
PCB板
X
O
O
O
O
O
电气连接器
O
O
O
O
O
O
压电晶体
X
O
O
O
O
O
环氧
O
O
O
O
O
O
铁氟龙
O
O
O
O
O
O
电子
O
O
O
O
O
O
厚膜基板
O
O
X
O
O
O
电线
O
O
O
O
O
O
电缆
X
O
O
O
O
O
塑料
O
O
O
O
O
O
焊接
X
O
O
O
O
O
铜合金/黄铜
X
O
O
O
O
O
本表格依据 SJ/T 11364 的规定编制。
O：表示该有害物质在该部件所有均质材料中的含量均在 GB/T 26572 规定的限量要求以下。
X：表示该有害物质至少在该部件的某一均质材料中的含量超出 GB/T 26572 规定的限量要求。
铅是欧洲RoHS指令2011/65/ EU附件三和附件四目前由于允许的豁免。
CHINA RoHS COMPLIANCE

DOCUMENT NUMBER: 21354
DOCUMENT REVISION: D
ECN: 46162
Component Name
Hazardous Substances
Lead
(Pb)
Mercury
(Hg)
Cadmium
(Cd)
Chromium VI
Compounds
(Cr(VI))
Polybrominated
Biphenyls
(PBB)
Polybrominated
Diphenyl
Ethers (PBDE)
Housing
O
O
O
O
O
O
PCB Board
X
O
O
O
O
O
Electrical
Connectors
O
O
O
O
O
O
Piezoelectric
Crystals
X
O
O
O
O
O
Epoxy
O
O
O
O
O
O
Teflon
O
O
O
O
O
O
Electronics
O
O
O
O
O
O
Thick Film
Substrate
O
O
X
O
O
O
Wires
O
O
O
O
O
O
Cables
X
O
O
O
O
O
Plastic
O
O
O
O
O
O
Solder
X
O
O
O
O
O
Copper Alloy/Brass
X
O
O
O
O
O
This table is prepared in accordance with the provisions of SJ/T 11364.
O: Indicates that said hazardous substance contained in all of the homogeneous materials for this part is below the limit
requirement of GB/T 26572.
X: Indicates that said hazardous substance contained in at least one of the homogeneous materials for this part is above
the limit requirement of GB/T 26572.
Lead is present due to allowed exemption in Annex III or Annex IV of the European RoHS Directive 2011/65/EU.

SERIES 8159 SIGNAL CONDITIONER MANUAL
1
TABLE OF CONTENTS
Section Page
1.0 DESCRIPTION 2
2.0 INSTALLATION 3
3.0 WIRING 4
4.0 SWITCH DEFINITION 8
5.0 FUNCTION DEFINITIONS 9
6.0 OPERATING INSTRUCTIONS 10
7.0 CALIBRATION INSTRUCTIONS 12
8.0 OPTIONS 15
Figure Page
1 Series 8159 Front Panel View 2
2 Series 8159 Rear Panel View 3
3 Panel Mounting Cut-Out Dimensions 3
4 Transducer Wiring 4
5 Input/Output (I/O) Wiring 5
6 Location of Jumpers and Potentiometers (Top View) 6
7 SW1 Switch Settings 6
8 Location of 115/230 VAC Jumper (Bottom View) 6
9 Location of RCAL Resistor 7
10 Front Panel Switches 7
11 Transducer Connections 13
12 Program Menu Diagram 16
MANUAL NUMBER: 23865
MANUAL REVISION: J
DIN. NUMBER: 49289

SERIES 8159 SIGNAL CONDITIONER MANUAL
2
1.0 DESCRIPTION
The Series 8159 is a microprocessor-based digital indicator capable of interfacing directly to low
level strain gage transducers. An internal, high gain, fully differential amplifier and a 4-½ digit
analog-to-digital converter combine to accurately digitize the input signal. A 5V @ 60mA or
10V @ 120mA, short circuit protected, transducer excitation supply is also provided. A +/-
10VDC analog output signal, with a 1kHz bandwidth, comes standard with the instrument. A 4-
20 mA analog output signal is also standard with the instrument. A front panel RCAL switch
provides a convenient calibration feature. TARE and CALIBRATION are easily performed via
front panel pushbuttons.
Figure 1 - Series 8159 Front Panel View

SERIES 8159 SIGNAL CONDITIONER MANUAL
3
Figure 2 - Series 8159 Rear Panel View
2.0 INSTALLATION
The Series 8159 enclosure is designated for panel mounting in a 1/8 DIN cutout. The cutout
dimensions are shown below.
Figure 3 - Panel Mounting Cutout Dimensions
To panel mount the 8159, perform the following steps:
1. Rotate the four pawl screws (outside screws in each corner) several turns counter-
clockwise to retract the pawls. Make sure the pawls retract enough to clear the back of
the mounting panel. The pawls may be retracted to accommodate panel thickness up to
0.25 inches (6.35mm).
2. Insert the instrument into the panel cutout.
3. Position the pawls so that their elongated dimension overlaps the panel cutout, then
tighten the screws. Do not over-tighten.
4. Installation complete.

SERIES 8159 SIGNAL CONDITIONER MANUAL
4
3.0 WIRING
Reference Figures 4 and 5 for TRANSDUCER and INPUT/OUTPUT (I/O) wiring information.
Power is applied with a 3-prong AC power cord. The instrument is protected by a 250V, 250mA
fast acting 5mm fuse. The fuse holder is an integral part of the input power connector. A spare
fuse is provided in the fuse holder. Internal solder jumpers are provided to allow 115VAC or
230VAC operation (Reference Figure 8).
Warning: Remove AC power to the 8159 meter before changing the fuse.
The cable shield must connect directly to an RFI/EMI rated connector hood instead of pin
9. The shield must make a 360 degree bond to the connector hood at the cable entry.
Figure 4 - Transducer Wiring
It is recommended that the sense leads be used with cable lengths longer than 20 feet. The
excitation voltage is then sensed and regulated at the transducer for optimum shunt calibration.
Consult factory for cable lengths over 100 feet.
Warning: Remove AC power to the 8159 meter before removing any enclosure panels or
making any internal adjustments or changes.
To enable or disable the sense lead setting, perform the following:
1. Open the back panel of the meter case by removing the four (4) screws located in the
corners of the panel face.
2. Expose the connector circuit board located on the back of the back panel.
NOTE: For newer units, the boards use R2 and R3 instead of JP2 and JP3.
3. Remove the solder jumpers from JP2 and JP3 to ENABLE sense lead setting.
4. Solder the JP2 and JP3 jumpers to DISABLE the sense lead setting.
5. Close the back panel of the meter case by fastening the panel face at each corner with the
four (4) screws.
9 Chassis GndCable Shield

SERIES 8159 SIGNAL CONDITIONER MANUAL
5
Figure 5 - Input/Output (I/O) Wiring

SERIES 8159 SIGNAL CONDITIONER MANUAL
6
SW1
Figure 6 - Location of Jumpers and Potentiometers (Top View)
Warning: Remove AC power to the 8159 meter before removing any enclosure panels or
making any internal adjustments or changes.
Switch 1 Switch 2 Switch 3 Switch
4 Switch 5
Bridge
Excitation
5.0 V
EXC
ON
10.0 V
EXC
OFF
Full-Scale Input
1.5 mV/V ON ON OFF
2.5 mV/V OFF ON OFF
3.5 mV/V ON OFF OFF
4.5 mV/V OFF OFF ON
Figure 7 - SW1 Switch Settings
Figure 8 - Location of Jumper (Bottom View)

SERIES 8159 SIGNAL CONDITIONER MANUAL
7
Warning: Remove AC power to the 8159 meter before removing any enclosure panels or
making any internal adjustments or changes.
Figure 9 - Location of RCAL Resistor (Top View)
Warning: Remove AC power to the 8159 meter before removing any enclosure panels
or making any internal adjustments or changes.
Figure 10 - Front Panel Switches
Rear Panel
RCAL Resistor
Housing

SERIES 8159 SIGNAL CONDITIONER MANUAL
8
4.0 SWITCH DEFINITIONS
Mode Selection Switch (S1)
S1 is used to cycle through the various set points, Hysteresis, and calibration values and decimal
point locations. The sequence is as follows. The designators, in parenthesis, identify text that
will be displayed, momentarily, followed by the value.
Set Point High 1 (SPH1)
Set Point Low 1 (SPL1)
Set Point High 2 (SPH2)
Set Point Low 2 (SPL2)
Hysteresis High (HH)
Hysteresis Low (HL)
Auto Cal (CAL)
Decimal Point (dP)
Exit
While in the Mode Selection sequence, the indicator is no longer monitoring the input signal. To
exit, depress S1, once, after the Decimal Point selection is completed.
Increment Switch (S2)
This switch serves two functions, depending on the present status of S1. If the instrument is in
the Mode Selection sequence, this switch increments the flashing digit.
If the instrument is in its normal operating mode, S2 becomes the TARE switch. If the TARE
LED, located on the front panel, is not illuminated, depressing S2 once will automatically zero
the readout and illuminate the TARE LED. Depressing S2 again will UNTARE the readout and
extinguish the TARE LED. TARING is accomplished by storing the reading prior to TARING
and subtracting this value from all subsequent readings. It does not alter the calibration of the
instrument. A remote tare function is available. See Section 6.0.

SERIES 8159 SIGNAL CONDITIONER MANUAL
9
Decrement Switch (S3)
This switch serves two functions, depending on the present status of S1. If the instrument is in
the Mode Selection sequence, this switch will decrement the flashing digit.
If the instrument is in its operating mode, S3 becomes an AUTO CAL switch.
CAUTION: Depressing this switch will cause the instrument to recalibrate its full-scale reading.
Be sure to read the CALIBRATION INSTRUCTIONS before using this switch.
Step Switch (S4)
This switch also serves two functions, depending on the present status of S1. If the instrument is
in the Mode Selection sequence, this switch allows the user to cycle through the digits. Used in
conjunction with S2 and S3, it allows rapid updating of the Set Point, Hysteresis and Cal values.
RCAL Switch (S5)
This switch activates a reed relay that places a precision calibration resistor across Sig(-) and
Vexc(-) for a positive RCAL reading, or across Sig(+) and Vexc(-) for a negative RCAL reading.
The calibration resistor is pre-installed at the factory when the conditioner is purchased with a
sensor as part of a system. The resistor is mounted on terminals located inside the back panel of
the conditioner. Removing the back panel can access it. See Figure 9.
Front Panel Switch Disable Jumper (Reference Figure 6)
This jumper, when removed, disables S1, S2, S3 and S4.
5.0 FUNCTION DEFINITIONS
Set Point High 1 (SPH1)
SPH1 is the present value being constantly compared with the displayed reading. If the
magnitude and sign of the reading exceeds the present SPH1 value, the SPH1 relay will activate
(relay option assembly required) and the front panel LED (H1) will illuminate. If the displayed
reading equals the SPH1 value, nothing will happen. If SPH1 is exceeded, the readout must then
drop below SPH1 less the Hysteresis High (HH) value before the relay deactivates and the H1
LED turns off.
Set Point Low 1 (SPL1)
SPL1 is another preset value being constantly compared with the displayed reading. If the
magnitude and sign of the displayed reading is less than the SPL1 present value, the SPL1 relay
will activate (relay option assembly required) and the front panel LED (L1) will illuminate. If
the displayed reading equals the SPL1 value, nothing will happen. If the displayed reading drops
below SPL1, it must then exceed SPL1 plus the Hysteresis Low (HL) value before the relay
deactivates and the L1 LED turns off.
Set Point High 2 (SPH2)
SPH2 is independent and functions identically to SPH1. SPH2 has its own relay contact outputs
and front panel LED (H2).

SERIES 8159 SIGNAL CONDITIONER MANUAL
10
Set Point Low 2 (SPL2)
SPL2 is independent and functions identically to SPL1. SPL2 has its own relay contact outputs
and front panel LED (L2).
Hysteresis High (HH)
HH is the hysteresis value for SPH1 and SPH2. The hysteresis value determines the number of
counts the displayed reading must fall below SPH1 and SPH2 values before deactivating their
respective relays and LEDs. The maximum value of hysteresis is 99 counts while the minimum
is 00 counts.
Hysteresis Low (HL)
HL is the hysteresis value for SPL1 and SPL2. The hysteresis value determines the number of
counts the displayed reading must exceed SPL1 and SPL2 values before deactivating their
respective relays and LEDs. The maximum value of hysteresis is 99 counts while the minimum
is 00 counts.
Auto Cal (CAL)
This input allows the user to calibrate the full-scale readout to any desired engineering points.
The CAL number is entered in the same way as the Set Point and Hysteresis values. This input
must be entered prior to performing the calibration. The CAL number may be any number from
1 to 99,999. Zero is an invalid CAL number. For best stability and performance. Keep the
maximum CAL number below 19,999 counts.
Decimal Point (dP)
dP allows selection of decimal point locations for display. The locations selectable are
X.XXXX, XX.XXX, XXX.XX, XXXX.X, XXXXX.
Min./Max. Recall (HI/LO)
The HI and LO values are the maximum and minimum values, respectively, of the displayed
readings. Sign and magnitude are constantly compared with the displayed readings at the
instrument update rate. The maximum value is initialized to –99,999 and the minimum value to
99,999.
6.0 OPERATING INSTRUCTIONS
TURN-ON INSTRUCTIONS
Reference Figures 4 and 5 for proper input and output signal wiring.
1. Apply power to the instrument.
2. Verify the instrument readout blanks momentarily, then displays the value of the input
signal.
3. Allow 30-minute warm-up with transducer connected.

SERIES 8159 SIGNAL CONDITIONER MANUAL
11
PROGRAM INSTRUCTIONS
Four front panel switches (S1, S2, S3, S4) allow the user to program Set Point, Hysteresis,
Calibration Number (CAL) and Decimal Points and monitor minimum, maximum or real time
values.
1. Depress MODE (S1) switch once. The text SPH1 followed by the current value of
Set Point High 1 (SPH1) will be displayed. The system will idle in this condition
until S2, S3, or S4 is depressed. If S2 or S3 is depressed, the most significant digit
will be incremented or decremented, respectively. Incrementing the most significant
digit will display numbers from –9 to 9.
Depressing S4 will cause selection of the next least significant digit position for
updating. The digit being updated will be flashing. Using S2, S3, and S4, set Set
Point High 1 to the desired value.
2. Depress MODE (S1) switch once. The text SPL1 followed by the current value of
Set Point Low 1 will be displayed. Repeat Step 1 to set Set Point Low 1 to the
desired value.
3. Depress MODE (S1) switch once. The text SPH2 followed by the current value of
Set Point High 2 will be displayed. Repeat Step 1 to set Set Point High 2 to the
desired value.
4. Depress MODE (S1) switch once. The text SPL2 followed by the current value of
Set Point Low 2 will be displayed. Repeat Step 1 to set Set Point Low 2 to the
desired value.
5. Depress MODE (S1) switch once. The text HH followed by the current value of
Hysteresis High will be displayed. Repeat Step 1 to set Hysteresis High to the
desired value. The maximum value for HH is 99 counts.
6. Depress MODE (S1) switch once. The text HL followed by the current value of
Hysteresis Low will be displayed. Repeat Step 1 to set Hysteresis Low to the desired
value. The maximum value for HL is 99 counts.
7. Depress MODE (S1) switch once. The text CAL followed by the current CAL
number will be displayed. Repeat Step 1 to set the CAL number. The maximum
CAL number is 99,999.
8. Depress MODE (S1) switch once. The text dP followed by the current decimal
position will be shown flashing. Increment (S2) or decrement (S3) the decimal point
to the desired location.
9. Depress MODE (S1) switch once. The instrument will exit the Mode Selection
Sequence and enter the normal operating mode (i.e. monitoring the input signal).
This is the end of the PROGRAM INSTRUCTIONS.

SERIES 8159 SIGNAL CONDITIONER MANUAL
12
REMOTE TARE (ZERO)
Remote zero will tare out any residual value, such as that caused by fixturing a load cell into a
test stand. It is activated by momentarily connecting pin 14 to pin 5 on the 15-pin I/O connector
J8.
REMOTE REBOOT
This feature is used to clear the high or low set points if required. It is activated by momentarily
connecting pin 8 to pin 5 on the 15-pin I/O connector J2.
7.0 CALIBRATION INSTRUCTIONS
The Series 8159 can be calibrated using (2) different methods. The first method uses actual or
simulated ZERO and FULL SCALE (FS) inputs. Actual inputs may come from a strain gage
transducer loaded with calibrated weights. Simulated inputs may come from a strain gage bridge
simulator. The second method utilizes an RCAL resistor to simulate a load on a strain gage
bridge. The RCAL resistor is activated when the RCAL (S5) switch is depressed. Reference
Figure 10 for location of S5.
ACTUAL LOAD OR BRIDGE SIMULATED METHOD
1. Connect the strain gage transducer to the instrument using Figure 4 as a reference. Do
not apply any load to the transducer.
2. Apply power to the instrument.
NOTE: If the instrument was previously calibrated and no new calibration is required, do
not proceed any further. All previous calibration information is stored in non-volatile
EEPROM and is ready for use when power to the instrument is reapplied.
3. Calculate the CAL NUMBER by verifying the load that will be used to calibrate the full
scale of the Series 8159.
Example: If a 500-pound load is used to calibrate full scale and the desired readout is
500.0, the CAL NUMBER will be 5000. The decimal point can be selected later. If the
desired readout is 500 then the CAL NUMBER will be 500.
4. Program in the CAL NUMBER. Reference PROGRAM INSTRUCTIONS, Step 7. If
the CAL NUMBER was previously programmed, skip this step.
5. The TARE and CAL LED's on the front panel should be illuminated.
6. Depress the INCREMENT (S2) switch and hold until the TARE LED extinguishes. The
instrument should now display the UNTARED reading.
7. Depress the DECREMENT (S3) switch and hold until the CAL LED extinguishes. The
instrument should now display the UNCALIBRATED reading.

SERIES 8159 SIGNAL CONDITIONER MANUAL
13
8. With no load on the transducer, verify the instrument reading is low.
9. Depress the INCREMENT (S2) switch and hold until the TARE LED illuminates. The
readout should be ZERO +/- 1 digit.
10. Apply the FULL SCALE load to the transducer. If a strain gage simulator is used, set it
to the desired mV/V setting. The instrument should display a value greater than 01000.
For optimum performance the readout should be closer to 19000. Ignore decimal point.
11. Depress the DECREMENT (S3) switch and hold until the CAL LED illuminates. The
readout should display the CAL NUMBER +/- 1 digit.
The CALIBRATION sequence is now complete.
NOTE: Calibration information (tare and slope values) is maintained in non- volatile
memory and is updated every time CALIBRATION Steps 9 and 11 are performed. TARING
the display does not change the scale factor (slope value) calculated when Step 11 is
completed.
RCAL (SIMULATED) LOAD METHOD
1. Connect the strain gage transducer to the instrument using Figure 4 as a reference. Do
not apply any load to the transducer.
2. An RCAL resistor is provided and installed on the rear panel printed circuit board.
3. Apply power to the instrument.
Figure 11 - Transducer Connections
NOTE: If the instrument was previously calibrated and no new calibration is required, do
not proceed any further. All previous calibration information is stored in non-volatile
EEPROM and is ready for use when power to the instrument is reapplied.
+R
CAL
-
R
CAL

SERIES 8159 SIGNAL CONDITIONER MANUAL
14
4. Set the CAL NUMBER to the full-scale value provided with the RCAL resistor. This is
the shunt calibration valve indicated on the sensor’s calibration certificate.
Example: If the RCAL resistor supplied with the instrument creates an output equivalent
to 80% of a full-scale 500-pound load, set the CAL NUMBER to 400.00, 0400.0 or
00400.
See Section 6.0, Program Instructions, for details on how to set this value.
5. The TARE and CAL LED's on the front panel should be illuminated.
6. Depress the INCREMENT (S2) switch and hold until the TARE LED extinguishes. The
instrument should now display the UNTARED reading.
7. Depress the DECREMENT (S3) switch and hold until the CAL LED extinguishes. The
instrument should now display the UNCALIBRATED reading.
8. With no load on the transducer, verify the readout is approximately zero.
9. Depress the INCREMENT (S2) switch and hold until the TARE LED illuminates. The
readout should be ZERO +/- 1 digit.
10. Depress and hold the RCAL switch. The display should read a value greater than 01000.
For optimum performance the readout should be closer to 19000. Ignore decimal point.
If system calibration was done by PCB, this displayed valve will be equal to the shunt
calibration valve shown on the system calibration certificate.
11. While holding down the RCAL switch, depress the DECREMENT (S3) switch and hold
until the CAL LED illuminates. The readout should display the CAL NUMBER +/- 1
digit.
The RCAL CALIBRATION sequence is now complete.
NOTE: Calibration information (tare and slope values) is maintained in non-volatile
memory and is updated every time CALIBRATION Steps 9 and 10 are performed. TARING
the display does not change the scale factor (slope value) calculated when Step 10 is
completed.

SERIES 8159 SIGNAL CONDITIONER MANUAL
15
8.0 OPTIONS
RS232 SERIAL COMMUNICATION OUTPUT
The RS232 transmission is of the displayed reading and is transmitted once every display update,
if the DSR line is TRUE (HIGH). The data format is described below.
1. No parity bit
2. 1 stop bit
3. 8 data bits
The data transmission sequence is described below.
1. Sign: plus or minus (1st word)
2. Magnitude: most significant digit (MSD) first (2nd thru 6th word)
3. Decimal point: exponent (7th word)
4. End of Line (EOL): Control Z (8th word)
Note: Data are transmitted in ASCII characters. The decimal position is transmitted as a power
of 10 exponent in ASCII.
The decimal point as a power of 10 exponent is:
x.xxxx 4 (ASCII)
xx.xxx 3 (ASCII)
xxx.xx 2 (ASCII)
xxxx.x 1 (ASCII)
xxxxx 0 (ASCII)
The baud rate is set by solder jumpers (Reference Figure 6 for location). The following baud
rate with their corresponding solder jumpers are shown below.
Solder
Jumper Baud
1 2 3 4 Rate
0 1 1 1 600
1 0 0 0 1200
1 0 1 0 2400
1 1 0 0 4800
1 1 0 1 7200
1 1 1 0 9600 (default)
1 1 1 1 19200
"0" = solder jumper ON
"1" = solder jumper removed