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BBG BBG
Incorporated
Product Information for the BBG-SSBA
Serial to Synchro/Resolver Booster Amplifier
The BBG-SSBA-25 and BBG-SSBA-125 are 6U VMEbus format pc cards
which interface between a serial data stream and a synchro or resolver
system. The BBG-SSBA-25 has 25VA power output and the BBG-SSBA-
125 has 125VA power output. The BBG-SSBA standard message format
uses the NMEA 0183 message structures and supports RS-232, RS-422,
RS-423, RS-485, and MIL-STD-188C protocols.
The BBG-SSBA is a "SMART" interface due to the onboard processor
which controls all message parsing, data conversion, and output driving,
thus, requiring no host processor. Outputs provide user control, thermal
shutdown, locked rotor "KICK" circuit, and fault indication.
In stituations not requiring a VMEbus interface, the BBG-SSBA operates in
a "STAND-ALONE" mode. With the addition of an external power supplies,
the onboard processor converts the serial data stream into synchro/resolver
outputs without the requirement of a host CPU. Upon applying power, the
BBG-SSBA reads the configuration switch, and fully configures and
operates with no operator intervention required.
Synchro/resolver signals, reference inputs, and serial inputs are available
on standard DB25 and DB37 pin connectors.
6U VMEBUS FORMAT
HIGH POWER 25VA or 125VA
SYNCHRO / RESOLVER
OUTPUT
THERMAL PROTECTION,
LOCK ROTOR KICK CIRCUIT
RS-232, RS-422, RS-423,
RS-485, MIL-STD-188C
PROTOCOLS
NEMA-0183 SERIAL DATA
COMPATIBLE INPUT
STAND-ALONE MODE
REQUIRES NO HOST CPU
SWITCH SELECTABLE BAUD
RATES
CUSTOM IMPLEMENTATIONS
AVAILABLE UPON REQUEST
PROCESSOR
25 PIN CONN
VMEbus (+5V DC)
SY
N
C
H
R
O
S
E
R
I
A
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BBG P.O. BOX 827 VA BEACH VA 23451 (757) 425-6615
DIGITAL TO
SYNCHRO
CONVERTER
25VA/125VA
POWER AMPLIFIER
37 PIN CONN BBG-SSBA-25 SPECIFICATIONS
PARAMETER
VALUE
UNITS
POWER SUPPLY
5
Volts
300
MiliAmps
15
Volts
8 (max)
Amps
-15
Volts
8 (max)
Amps
TEMPERATURE RANGE
OPERATING
0 to +50
C
STORAGE
-65 to +150
C
o
o
PHYSICAL CHARACTERISTICS

9.2 x 6.41 x 0.78
in.
6U VMEbus PC CARD
23.37 x 16.28 x 1.99
cm.
Table 1. BBG-SSBA-25 Specifications
BBG-SSBA-125 SPECIFICATIONS
PARAMETER
VALUE
UNITS
POWER SUPPLY
5
Volts
300
MiliAmps
15
Volts
15 (max)
Amps
-15
Volts
15 (max)
Amps
TEMPERATURE RANGE
OPERATING
0 to +50
C
STORAGE
-65 to +150
C
o
o
PHYSICAL CHARACTERISTICS

9.2 x 6.41 x 0.78
in.
6U VMEbus PC CARD
23.37 x 16.28 x 1.99
cm.
Table 2. BBG-SSBA-125 Specifications OVERVIEW
The BBG-SSBA is a 6U VME FORMAT pc card which inputs a serial data
message containing a speed or angular position. This information
is processed by the onboard microcontroller and output in a synchro
or resolver format. The BBG-SSBA-25 has an output power of 25VA and
the BBG-SSBA-125 has an output power of 125VA. An onboard
microcontroller configures the card from power up or reset and
provides all signals and control to read the serial information and
output the synchro/resolver information. Serial data formats, power
outputs, synchro and resolver voltages and frequencies are factory
configured to user requirements.
Synchro information is passed over the serial data bus in a binary
angle measurement format (BAM) as shown in Table 2. The BBG-SSBA
accepts serial data in RS-232, RS-422, RS-423, RS-485, or MIL-STD-
188C protocols. Serial baud rates are switch selectable at: 2400,
4800, 9600, 19,200, and 38,400 bits per second. Default data output
is 9600, 8 bits, no parity, and one stop bit (9600, 8, N, 1).
Table 3 defines the switch position for the available baud rates.
Custom serial data formats and frequencies are available upon
request. BINARY ANGLE MEASUREMENT FORMAT
BIT
DEG/BIT
MIN/BIT
1 (MSB)
180
10,800
2
90
5,400
3
45
2,700
4
22.5
1,350
5
11.25
675
6
5.625
337.5
7
2.813
168.75
8
1.405
84.38
9
0.7031
42.19
10
0.3516
21.09
11
0.1758
10.55
12
0.0879
5.27
13
0.0439
2.64
14
0.0220
1.32
15
0.0110
0.66
16 (LSB)
0.0055
0.33
Table 3. BINARY ANGLE MEASUREMENT FORMAT
BBG-SSBA BAUD RATE SELECTION
BAUD RATE
Configuration Switch S1
(bits per sec)
1
2
3
4
5
6
7
8
2400
1
1
0
X
X
X
X
X
4800
0
0
1
X
X
X
X
X
9600
1
0
1
X
X
X
X
X
19200
0
1
1
X
X
X
X
X
38400
1
1
1
X
X
X
X
X
1 = off, 0 = on, X = Don't Care
Table 4. BBG-SSBA Baud Rate Selection NMEA 0183 FORMAT
The BBG-SSBA can be factory programmed to accept any NMEA 0183 data format.
Current data format is as follows:
$PTBBG,XXX.XX,A*CSCRLF
$ - start of message ascii character 24 Hex
PT - Proprietary message
BBG - BBG Incorporated
XXX.XX - channel 1 synchro/resolver angle (ex: 045.01)
A - validity (A = valid, V = Invalid)
* - ascii character 2A Hex
CS - checksum (8 bit XOR of characters between $ and *
CR - carriage return
LF - Line feed
OPTIONS
SYNCHRO OUTPUT
The BBG-SSBA can be factory configured for 90Vrms, 11.8Vrms, and/or 6.8Vrms
synchro or resolver outputs at 60Hz or 400Hz. Custom voltages and frequencies are
available upon request. Please specify desired voltage when ordering card.
CONFIGURATION JUMPER LIST
BBG-SSBA JUMPER CONFIGURATION
JUMPER
PINS
FUNCTION
P25
1-2
RS232 RECEIVER ENABLE
P25
2-3
RS422 RECEIVER ENABLE
P27
19-20
CTL OUT ENABLE
P29
1-2
115V Ref. Input ENABLE
P30
1-2
115V Ref. Input ENABLE
Table 5. BBG-SSBA Configuration Jumper List CONNECTOR LIST FOR BBG-SSBA
I/O CONNECTOR: J1
I/O CONNECTOR TYPE: 96 PIN DIN MALE
CONNECTOR MATE: 96 PIN DIN FEMALE
PIN NO SIGNAL PIN NO SIGNAL
A9
GND
B23
GND
A11
GND
C9
GND
A15
GND
A32
+5 VOLTS
A17
GND
B32
+5 VOLTS
A19
GND
C32
+5 VOLTS
B20
GND
ALL OTHERS NOT
CONNECTED I/O CONNECTOR: J2
I/O CONNECTOR TYPE: DB37PA
CONNECTOR MATE: DB37S
PIN NO SIGNAL PIN NO SIGNAL
1
RL26 (26V REF- INPUT)
20
+5 VOLTS (INPUT)
2
RL115 (115V REF- INPUT)
21
SPARE
3
RH26 (26V REF+ INPUT)
22
GND
4
RH115 (115V REF+ INPUT)
23
GND
5
S1N
24
RELAY1 (OUTPUT)
6
S1 (OUTPUT)
25
GND
7
S1P
26
RELAY2 (OUTPUT)
8
S2N
27
SPARE
9
S2 (OUTPUT)
28
DISABLE (INPUT)
10
S2P
29
THERMAL SHUTDOWN
(INPUT)
11
S3N
30
FAULT (OUTPUT)
12
S3 (OUTPUT)
31
SPARE
13
S3P (OUTPUT)
32
SPARE
14
CS-
33
SPARE
15
CS+
34
S4 (S/D INPUT)
16
+15VOLTS (INPUT)
35
S3 (S/D INPUT)
17
-15VOLTS (INPUT)
36
S2 (S/D INPUT)
18
RL1 (S/D INPUT)
37
S1 (S/D INPUT)
19
RH1 (S/D INPUT) I/O CONNECTOR: J3
I/O CONNECTOR TYPE: DB25PA
CONNECTOR MATE: DB25S
PIN NO SIGNAL PIN NO SIGNAL
1
SPARE
14
RXD422+ (INPUT)
2
RXD232 (INPUT)
15
RXD422- (INPUT)
3
TXD232 (OUTPUT)
16
TXC422+ (OUTPUT)
4
RXC232 (INPUT)
17
TXC422- (OUTPUT)
5
TXC232 (OUTPUT)
18
RXC422+ (INPUT)
6
SPARE
19
RXC422- (INPUT)
7
GND
20
CTLI1 (INPUT)
8
SPARE
21
CTLO2 (OUTPUT)
9
SPARE
22
SPARE
10
SPARE
23
SPARE
11
SPARE
24
SPARE
12
TXD422+ (OUTPUT)
25
SPARE
13
TXD422- (OUTPUT)