Technical data

Programming the Status Register System 4
Agilent N8211A/N8212A Performance Upconverter Synthetic Instrument Module, 250 kHz to 20 / 40 GHz 117
3 Power (summary). This is a summary bit taken from the QUEStionable:POWer register. A 1 in
this bit position indicates that one of the following may have happened: The ALC (Automatic
Leveling Control) is unable to maintain a leveled RF output power (i.e., ALC is UNLEVELED), the
reverse power protection circuit has been tripped. See the “Data Questionable Status Group" on
page 115 for more information.
4 Temperature (OVEN COLD). A 1 in this bit position indicates that the internal reference
oscillator (reference oven) is cold.
5 Frequency (summary). This is a summary bit taken from the QUEStionable:FREQuency register.
A 1 in this bit position indicates that one of the following may have happened: synthesizer PLL
unlocked, 10 MHz reference VCO PLL unlocked, 1 GHz reference unlocked, sampler unlocked, or
YO loop unlocked. For more information, see the “Data Questionable Frequency Status
Group" on page 121.
6 Unused. This bit is always set to 0.
7 Modulation (summary). This is a summary bit taken from the QUEStionable:MODulation
register. A 1 in this bit position indicates that one of the following may have happened:
modulation source 1 underrange, modulation source 1 overrange, modulation source 2
underrange, modulation source 2 overrange, or modulation uncalibrated. See the “Data
Questionable Modulation Status Group" on page 124 for more information.
8
*
Calibration (summary). This is a summary bit taken from the QUEStionable:CALibration register.
A 1 in this bit position indicates that one of the following may have happened: an error has
occurred in the DCFM/DCΦM zero calibration, or an error has occurred in the I/Q calibration.
See the “Data Questionable Calibration Status Group" on page 126 for more information.
9 Self Test. A 1 in this bit position indicates that a self-test has failed during power-up. Reset this
bit by cycling the N8211A/N8212A’s line power. *CLS will not clear this bit.
10, 11 Unused. These bits are always set to 0.
12 BERT Always 0
13, 14 Unused. These bits are always set to 0.
15 Always 0.
* This bit applies only to the DCFM/DCΦM calibration.
Query: STATus:QUEStionable:CONDition?
Response: The decimal sum of the bits set to 1
Example: The decimal value 520 is returned. The decimal sum = 512 (bit 9) + 8 (bit 3).
Table 7 Data Questionable Condition Register Bits
Bit Description