Digital Frequency Discriminator
FDFD7409-6
FEATURES
• High Accuracy
• High Resolution
• Low Power
• Short RF Pulse Capture
• 250 nS Throughput Time
• High Data Rate
• Small Package Size
• Light Weight
• Erroneous Data Detection
(Optional)
APPLICATIONS
• Electronic Counter Measurers
• Signal Intelligence
• Radar Warning Receivers
• Capture of Single RF Pulse Events
• Identification of Frequency Agile Radar
Clean Signal
25 Deg. C, -10 dBm
16,000
Digital Word
14,000
12,000
10,000
8,000
6,000
4,000
2,000
0
2,000
4,000
6,000
8,000
10,000
12,000
14,000
16,000
18,000
Frequency (MHz)
Frequency Accuracy
VR = 100%, RMS = 1.14 MHz
15
10
Error (MHz)
5
0
-5
-10
-15
2,000
4,000
6,000
8,000
10,000
12,000
14,000
16,000
18,000
Frequency (MHz)
Rev 4.10.12
apitech.com
• 888.553.7531 •
spectrummicrowave.com
Instantaneous Frequency Measurement
FDFD7409-6
Specifications Highlights:
Frequency Range (GHz)
Number of Bits
RMS Frequency Accuracy
Frequency Resolution
Dynamic Range
VSWR, max
Pulse Width
Data Format
Trigger Format
Erroneous Data Detection (optional)
Power
2 to 18 GHz
14
2 MHz at 6 dB SN
3 MHz at 0 dB SN (99% Valid Rate)
1 MHz
-10 to +10 dBm
2:1
50 ns to CW
TTL
TTL, 250 nS Throughput Time
85% Probability of Detection of Frequency Error
+5V to +5.2V @ 800 mA
+12V to +15V @ 800 mA
-8V to -15V @ 100 mA (internally regulated)
6.5” L x 5.5” W x 1.2” H
2.75 pounds maximum
SMA Female
51 socket - MDM51S (with jackposts)
-40°C to +85°C
Size
Weight
RF Connector
Data Connector
Temperature Range
Rev 4.10.12
apitech.com
• 888.553.7531 •
spectrummicrowave.com
Instantaneous Frequency Measurement
FDFD7409-6
(Traditional DFD/IFM Timing Diagram)
Timing Diagram
Pinout
Signal Description
Data bit 13
Data bit 12
Data bit 11
Data bit 10
Data bit 09
Data bit 08
Data bit 07
Data bit 06
Data bit 05
Data bit 04
Data bit 03
Data bit 02
+5 Volts DC
Trigger
Trigger Return
GND
GND
GND
Rev 4.10.12
Pin Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Signal Description
-12 Volts DC
-12 Volts DC
Data bit 14
Data bit 15
GND
GND
BDF (Optional)
Data bit 01
Data bit 00
GND
GND
+5 Volts DC
Reserved
Reserved
GND
+15 Volts DC
+15 Volts DC
Pin Number
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
Signal Description
Reserved
Test Point 14
Test Point 13
Test Point 12
Test Point 11
Test Point 10
Test Point 9
Test Point 8
Test Point 7
Test Point 6
Test Point 5
Test Point 4
Test Point 3
Test Point 2
Test Point 1
Test Point 0
Pin Number
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
apitech.com
• 888.553.7531 •
spectrummicrowave.com
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