Agilent Technologies 93000 SOC Series - Page 119

Lesson 1 – Analog Modules
119
Measure Unit (MESA)
The measure unit (software identifier: MESA) in the multi-site
baseband analog source & measure or multi-site baseband analog
measure provides a digitizer function and PMU function.
Measure Unit (MESA) Functional Diagram (single-ended input and CT2
trigger pin)
Pogo Pins
Each unit (measure unit or source unit) in the MCA has four
signal pogo pins (X+, X-, XX+, XX-). X is A for unit 1, B for unit 2,
C for unit 3, ..., and H for unit 8. Thus, for unit 1, the pogo pins
are A+, A-, AA+, and AA-. For details, see “Pogo Pin Assignments
in MCA” on page 128.
Core Functions
The measure unit MESA has five functions (called core functions):
Audio digitizer (which contains two digitizer cores), Video digitizer
normal mode, Video digitizer direct mode, PMU, and V source.
While all eight units in the module can be used simultaneously,
each core function in a unit can be used alternately. The core
function can be switched even in a testsuite. For some allowable
combinations of the core functions in a unit, see “Simultaneously
Available Core Functions in Measure Unit” on page 121.
Agilent 93000 SOC Series
Mi d Si l T i i
Page 50
Sequencer
X+
X-
(/+)
MESA
Unit
XX+
(clk)
XX-
(/+)
Timing
Generator
Master Clock
Unit Trigger
CCLK
CT2
(clk)
CT1
1/N
To each other unit
(seven units)
SYNC CLK
SYNC DATA
Start Sequencer
Core function selector
X:A for Unit 1
:
E for Unit 5
F for Unit 6
G for Unit 7
H for Unit 8
Pogo
Pin
Module base section
Waveform Memory
DSP for captured data
DSP Memory
DSP
Common Trigger
2
2
Audio Digitizer Core 2
LPF
50 kHz
+
–
ADC 24-bit
200 ksps
Offset
LPF
15 MHz
Video Digitizer
Direct mode
+
–
ADC 14-bit
65 Msps
100MHz BW
Offset
LPF
50 kHz
Audio Digitizer Core 1
+
–
ADC 24-bit
200 ksps
Offset
+
–
Offset
Normal mode
PMU
(on module base section)