Publication No. 980935 Rev. A
3152B User Manual
EADS North America Test and Services
Programming Reference 5-105
Response
The 3152B returns the current phase offset value in units of degrees.
PHASe1:NULL
HS Syntax: 08500
Description
This command is not supported by the 3152B. Legacy codes that program this command will be prompted
with an error.
PHASe1:LOCK {MASTer|SLAVe}(?)
HS Syntax: 0800A<1|2>(?)
Description
By definition, all 3152B units are turned on as masters. This does not interfere with normal operation because
the electrical circuits are designed to handle shared nodes. This means that for synchronization purpose,
slave units must be programmed to slave state. The sequence to synchronize then is: first, determine who is
master and who is slave using this command and then, switch synchronization on using the phas:lock 1
command.
Parameters
Name
Type
Default
Description
MASTer
Discrete
MAST
Will select the master unit in a multi-instrument system. The
master feeds the sample clock and the synchronization
signals through the ECLTrg 0-1 lines.
SLAVe
Discrete
Will select the slave unit(s) in a multi-instrument system.
The slave instruments receive the sample clock and the
synchronization signals from the ECLTrg 0-1 lines.
Response
The 3152B returns MAST or SLAV depending on the current backplane synchronization setting.
PHASe2:LOCK {OFF|ON|0|1}(?)
HS Syntax: 0920A<0|1>(?)
Description
This command will turn the PLL (phase lock loop) function on and off. The reference signal is applied to a
front panel input (PLL IN) and the 3152B locks onto it automatically using a smart frequency/phase sensing
sequence. After lock, the phase of the 3152B can be shifted in reference to the input signal. The PLL
operates in standard and arbitrary waveform modes, locking to external signals ranging from, as low as, 100
Hz to over 10 MHz. When placed in PLL mode, the LED near its input connector blinks until achieving full
lock. When locked, the LED lights constantly as an indication that the signal is locked to an external
reference.
Parameters
Range
Type
Default
Description
0-1
Discrete
0
Turns the PLL function on and off
Response
The 3152B returns 0, or 1 depending on the current PLL function setting.
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