Specifications

Table 5-3. List of Circuit Controls for the HP 11848A (1 of 2)
Control
DAC1
DAC2
DAC3
GAIN1
GAIN2
GAIN3
ATTEN1
ATTEN2
ATTEN3
Description
Digital to analog converter summed into
the summing amplifier for PLL Tune
Voltage and Center Voltage.
Digital to analog converter that controls
coarse Frequency Set voltage for the
HP 11848A internal VCOs.
Digital to analog converter that controls
fine Frequency Set voltage for the
HP 11848A internal VCOs.
First programmable amplifier in the PLL
circuit path of the HP 11848A.
Second programmable amplifier in the
PLL circuit path of the HP 11848A.
Programmable amplifier in the
< 100 kHz path prior to the selectable
Low Pass Filters.
Programmable attenuator at the output
of the HP 11848A rear-panel Tune
Voltage Output port.
Programmable attenuator within the PLL
circuit path of the HP 11848A prior to the
Summing Junction.
Programmable attenuator at the output
of the HP 11848A front-panel Tune
Voltage Output port.
Acceptable
Values
-12.75 to 12.75V in 50
mV steps.
Oto 12.75V in 50 mV
steps.
0 to 255 mV in 1 mV
steps.
0 to 28 dB in 4 dB
steps.
6 to 20 dB in 2 dB
steps.
X (2,4,10,20)*
X (1,0.5,0.2,0.1)*
X (1,0.5)*
X (1,0.5,0.2,0.1)*
*
These values are the multipliers for the available gain and attenuation settings.
11848A Control 5-37