Agilent Technologies 6629A User's Guide download pdf (Page 10)

N67xxA: Readback will not

return any information and

errors, such as -410,“Query

INTERRUPTED” and -420,

“Query UNTERMINATED”

will be reported.

Multiple, Semicolon-

Separated Queries

The 662xA overwrites any

previous unread query

responses. The N6700A,

however, can respond to

multiple queries.

Example:

VOUT? 1; VOUT? 2; VOUT? 3

662xA: Readback returns only

the information for the last

(VOUT? 3) query.

N6700A: Readback returns

values for all the queries,

separated by semicolons.

Numeric Data

662xA: The power supply will

return numeric data (ASCII

characters) in a format that is

dependent on the type of data

requested. Please refer to the

Numeric Data section in the

Remote Operation chapter of

the 662xA Operating Manuals.

N67xxA Module: Floating-point

numbers returned by the

instrument may not have

exactly the same syntax or

number of digits.

Initial Conditions

If the power supply is not

programmed to recall the

values in the 0 (zero) register

(RCL0), immediately after

power on, the power supply

sets all parameters to their

initial, or “CLR”, values. These

are the values that result from

the “CLR” command. Table 4

below lists these parameters

and their initial values.

Parameter 40 W/80 W High/Low 25 W/50 W N67xxA

Voltage Outputs Precision Outputs Modules

Voltage 0 V 0 V High Range Minimum Voltage

Current Minimum current limit 10 mA High Range Minimum Current

Reprogramming Delay 20 ms 20 ms 20 ms

Store/Recall 0 volts and min. 0 V High Range and Minimum voltage and

Registers current limit 10 mA High Range minimum current

Overvoltage (OV) 23 V on low voltage 55 V (High Range) 55 V

outputs and 55 V on

high voltage outputs

Output Channels On On Off

OCP Enabled Off Off 0 (off)

UNMASK Register 0 (cleared) 0 (cleared) 0 (cleared)

SRQ 0 (off) 0 (off) 0 (n/a)

Front Panel Metering Output #1 Output #1 Output #1

Power Supply Last stored value Last stored value Last stored value

Address (Factory set to 5) (Factory set to 5) (Factory set to 5)

Local Control On (enabled) On (enabled) On (enabled)

PON Bit On On 0 (n/a)

PON SRQ Last stored value 0 (off) 0 (n/a)

(Factory set to 0)

Cal Mode Off Off 0 (off)

Table 4. Initial Conditions

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 19 20

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Agilent Technologies 6629A User's Guide Page 10

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