STEL-1209/CE Intel, STEL-1209/CE Datasheet - Page 2

• Manufacturer Part Number: STEL-1209/CE
• Description: BPSK/QPSK/16 QAM Burst Modulator Assembly
• Manufacturer: Intel

KEY FEATURES
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J16
J2
J6
J1
Evaluation tool for STEL-1109 digital
modulator ASICs
Burst or continuous BPSK, QPSK, 16QAM
modulator at rates up to 10 Msps
On-board or external clock capability
– Up to 165 MHz
Up to 65 MHz output frequency
High frequency resolution
– 24 bits, 10 Hz @ 165 MHz
Digitally filtered data results in low
modulation side lobes
– Typically -52 dBc
High spectral purity
– Typically -50 dBc
STEL-1209
EXTERNAL DATA
EXTERNAL
DATA CLK
EXTERNAL TCLK
MASTER CLOCK
5VDD*
Control I/F
RS-232C
P2
10
6
8
STEL 1109
A
U
X
DATA
8
Controller
(FPGA)
PSK/QAM
Modulator
SRAM
Burst
6 8
ADDR
µPROC.
11
10
BLOCK DIAGRAM
10
Reset
JP4
S1
10 Bit
DAC
2
BURST MODE PARAMETERS:
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102.4 MHz
Xtal. Osc.
Default at burst QPSK modulation
– Data rate at 2.56 Mbps
Programmable packet length
– 1 to 16,381 symbols of data
Programmable guard time
– 2 to 16,382 symbols
Programmable burst quantity
– 1 to 10 million and auto repeat
Programmable preamble size
– 0 to 255 symbols of data
Master or slave mode
JP3
C
JP1
1
2
3
4
ATTEN.
+5V
-5V
AGnd
DGnd
Prog.
Aux. Output
*Driven by 5 Volt
JP5
on STEL-1209
SYNC
65 MHz
42 MHz
Filter
Filter
LP
LP
J8
J7
JP6
WCP 52841.c-5/9/97
IF Out
75
J5