Agilent Technologies 34401A User's Guide download pdf (Page 2)

FOLD FOLD

- turns the 34401A on and off. A self-

test occurs during the power-on

sequence.

- selects the front or rear panel

terminals as the input to the

34401A.

- transfers instrument control from the

computer (remote) to the front panel

(local).

Example: display indicating remote operation and rear panel

terminals selected.

2. Power, Input Terminal Selection,

and Local Control

The measurement function is set using the

following keys:

- when preceded by the “Shift” key the

functions shown above the keys are

selected.

Example: Period function selected

3. Setting the Function

Resolution is the number of digits the 34401A

can measure or display. Resolution is also

unique to the function selected and is set using

the following keys:

- selects 4 digit resolution

- selects 5 digit resolution

- selects 6 digit resolution

For increased measurement speed, select 4

digits. For increased accuracy, select 6 digits.

6. Triggering

Measurements are triggered from the front panel

using the following keys:

- disables auto-triggering (default) and

issues a single trigger to the 34401A

each time the key is pressed.

- Auto: enables auto-triggering if

the 34401A is in single trigger

mode (above).

- Hold: displays the measurement

after three consecutive readings

within the sensitivity band

(Trigger menu:

READ HOLD).

Front Panel Menu Reference

A: MEAS MENU

1: AC FILTER > 2: CONTINUITY > 3: INPUT R > 4: RATIO FUNC > 5: RESOLUTION

B: MATH MENU

1: MIN-MAX > 2: NULL VALUE > 3: dB REL > 4: dBm REF R > 5: LIMIT TEST > 6: HIGH LIMIT > 7: LOW LIMIT > 8: SCALE >

9: SCALE GAIN > 10: SCALE OFST

C: TRIG MENU

1: READ HOLD > 2: TRIG DELAY > 3: N SAMPLES

D: SYS MENU

1: RDGS STORE > 2: SAVED RDGS > 3: ERROR > 4: TEST > 5: DISPLAY > 6: BEEP > 7: COMMA > 8: REVISION >

9: STORE STATE > 10: RCL STATE > 11: POWER ON

E: I/O MENU

1: GPIB ADDR > 2: INTERFACE > 3: BAUD RATE > 4: PARITY > 5: LANGUAGE

F: CAL MENU

1: SECURED > [1: UNSECURED > 2: CALIBRATE] > 3: CAL COUNT > 4: MESSAGE

G: TEMP MENU

1: TEMP FUNC > 2: UNITS > 3: RTD TYPE 4: RTD Ro > 5: T/C TYPE > 6: THERM TYPE > 7: JUNCT TEMP

NOTE TO PRINTER:

This is FACE “B”

(See folding diagram on page 1)

NOTE TO PRINTER:

This is FACE “C”

(See folding diagram on page 1)

NOTE TO PRINTER:

This is FACE “D” (short face, folds inside)

(See folding diagram on page 1)

- dB measurement relative to value

in ‘dB Relative’ register (register

value is first db measurement

after dB function is enabled).

- dBm measurement relative to a

resistance referenced to 1 mW

(Math menu:

dBm REF R).

reading = 10Log

(measurement

/ reference resistance/ 1mW)

Example: dBm measurement @ ~ 3 VDC - 600Ω reference

resistance

Selected math operations are available from the

34401A front panel using the keys:

- value subtracted from the measurement

(Math menu:

NULL VALUE)

reading = measurement – null value

- displays minimum and maximum values

for the triggered set of readings.

Example: maximum value indicated with Math operation

‘Min/Max’ enabled

Menu Navigation

The front panel menu provides access to a

subset of the 34401A functionality. The menu is

navigated using the following keys:

Sequence:

- enables the front panel menu

- scrolls through menus ‘A’ - ‘G’

- selects menu command list and

scrolls through commands

- selects parameter list and scrolls

through parameters

- selects (saves) parameter and exits

the menu

(Enter is not a shifted function).

- enables menu (if off) and recalls

the last command displayed

when the menu was exited.

Note: for numeric parameters (0-9):

- selects and increments/

decrements each digit

individually

Example: number of reading samples increased to 5

0000 SMPLS

04.09495 VDC

Adrs Rmt Rear

05.02287 MAX

MaTh

200.001 uSEC

11.7842 DBm

MaTh

Measurement Configuration

Function DCV

AC Filter 20 Hz

Range Autorange

Resolution 5 digits, slow mode

Integration Time 10 PLCs

Autozero On

Input Resistance 10 MΩ

Continuity Threshold 10Ω

Math Operations

State Off

Function Null

dBm Reference Resistance 600Ω

Registers Cleared

Triggering

Trigger Source Auto-trigger

Trigger Delay Automatic

Samples Per Trigger 1

Reading Hold Sensitivity 0.10% of range

Other

Reading Memory Cleared

34401A Power-on and Reset States

4. Setting the Range and Resolution

5. Math Operations

The measurement range is unique to the

selected function. The range is set using the

following keys:

- selects between auto-range and manual

range

- manually decreases the range

- manually increases the range

Example: display indicating 10 volt range, 4 digit resolution

03.987 VDC

MAN

1 2

Quick Start Tutorial 1
Adrs Rmt Rear 2

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Agilent Technologies 34401A User's Guide Page 2

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