beautypg.com

Comtech EF Data DD2401 VME User Manual

Page 45

background image

DD2401 VME L-Band Demodulator Card Installation & Operational Manual

User Interfaces

MN-VME2401 – Rev. B

4-21

<1>









<1>

<4>

<4>


<2>


<2>


<2>

<4>

<2>


<1>


<1>


<1>


<1>


<1>








<1>


<1>

<1>

Latched Comm.
Alarm








Reserved

Error Counter

Test 2047 Error
Counter

Raw BER
Mantissa

Corrected BER
Mantissa

Eb/No

Offset Frequency

Test 2047
Mantissa

Raw BER
Exponent

Corrected BER
Exponent

Test 2047 BER
Exponent

Offset Frequency
Sign

BER/EbNo Status








Buffer Percent Full


Input Level

Input Level State

Bit 0 = -12 V Alarm
Bit 1 = +12 V Alarm
Bit 2 = +5 V Alarm
Bit 3 = Temperature
Bit 4 = Interface FPGA Fault
Bit 5 = Battery Fault
Bit 6 = RAM/ROM Fault
Bit 7 = Spare
(0 = Pass, 1 = Fail)

Ignore

Unsigned Binary Value

Unsigned Binary Value


Bytes 1 - 2 = Unsigned Binary Value Raw BER


Bytes 1 - 2 = Unsigned Binary Value Corrected BER


Unsigned Binary Value, 2 Decimal Places Implied

Unsigned Binary Value in Hz, Pos/Neg Indicated Below

Bytes 1 - 2 = Unsigned Binary Value Test 2047 BER


Byte 3 = Unsigned Binary Value Exponent


Byte 3 = Unsigned Binary Value Exponent


Byte 3 = Unsigned Binary Value Exponent


0 = Offset Frequency Pos, 1 = Offset Frequency Neg


Bit 0 = Raw BER and Corrected BER Status (1 = Valid)
Bit 1 = Test 2047 BER Status (1 = Valid)
Bits 2 - 3 = EbNo Status (0 = EbNo is Invalid, 1 = EbNo is Valid, 2 =

EbNo is Smaller Than Indicated Value, 3 = EbNo is
Greater Than Indicated Value)

Bit 4 = Raw BER Counter Overflow (1 = overflow condition)
Bit 5 = Test 2047 BER Counter Overflow (1 = overflow condition)
Bits 6 & 7 = Spares

Unsigned Binary Value Representing % Buffer Full (0 - 100 in 1%
Steps)

Unsigned Binary Value in -1 dB Steps, Negative Sign Implied

Signed Binary (0 = Equal to, 1 = Greater Than, -1 = Less Than Value