HP 8753E User Manual page 41

The ENTBY block. This block includes the knob, the step &) @j keys, the number pad,
and the backspace @ key. These allow you to enter numerical data and control the
markers.
You can use the numeric keypad to select digits, decimal points, and a minus sign for
numerical entries. You must also select a units terminator to complete value inputs.
The backspace key (ZJ has two independent functions: it modifies entries, and it turns off
the softkey menu so that marker information can be moveed off of the grids and into the
10.
channel-independent system functions such as the following:
copying, save/recall, and HP-IB controller mode
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tuned receiver mode
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frequency offset mode
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test sequence function
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harmonic measurements (Option 002)
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time domain transform (Option 010)
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HP-IB STATUS indicators are also included in this block.
11.
user preset state that can be dellned. Refer to the "Preset State and Memory Allocation"
chapter for a complete listing of the instrument preset condition.
PROBE POWER
12.
to an active probe for in-circuit measurements of ac circuits
13. connectors
analyzer's R channel, for frequency offset mode.
PORT 1 and POET 2. These ports output a signal from the source and receive input
14.
signals from a device under test. PORT 1 allows you to measure S12 and S1l. PORT 2
allows vou to measure SX and SW.
This connector (fused inside the instrument) supplies power
connector
.
These connectors allow you to apply an input signal to the
.