Agilent Technologies D, 66319b, 66321b Description and Model Differences

General Information - 2

Description and Model Differences

The Agilent 66321B Mobile Communications DC Source is a high performance dc power source that

provides peak current sourcing and rapid, basic measurements in a compact, half-rack box. It is designed

to simplify the testing of digital wireless communications products. Excellent voltage transient response

characteristics prevent test interruptions due to triggering of low voltage phone shutdown. The 15 volt

source and 5A peak current capability provides compatibility with a number of communications

standards, including: GSM, CDMA, TDMA, PCS, DECT, TERA, PHS, NADC, PHS, and others.

Additional capabilities include fast dynamic measurement and analysis of voltage and current waveforms

combined with precision current measurement. This lets you characterize cellular phone current drain

under all operating conditions. Programmable output resistance lets you emulate the effects of the

internal resistance of a battery. Negative resistance programming lets you compensate for voltage drops

that occur between the remote sense points and the phone terminals. Programmable output compensation

lets you optimize the transient response for various wire lengths and phone capacitances. Figure 2-1

describes the output characteristic of the dc source.

The Agilent 66319B Mobile Communications DC Source includes all of the capabilities of the Agilent

66321B with the addition of a second, electrically-isolated output. Figure 2-2 describes output

characteristic of this second output, which is primarily used to provide voltage or current for a charger

input on the device under test. The second output has all of the basic programmable features as the main

output, with the exception of the waveform measurement capability, open sense lead detect capability,

resistance programming, overvoltage protection, and low and middle current measurement ranges.

The Agilent 66321D and 66319D Mobile Communications DC Sources also contain an auxiliary DVM,

with input terminals located on the rear panel. This provides limited, low voltage dc and ac measurement

capability, which can be used to monitor test point voltages on the unit under test as well as on the test

fixture. The common mode voltage range is from −4.5 Vdc to +25 Vdc relative to the minus terminal of

output 1. The DVM is programmable from the front panel of the instrument as well as remotely using

SCPI programming commands.

♦ Voltage, current, and resistance control with 12-bit programming resolution on output 1.

! 3-ampere current source capability (up to 5 amperes for 7 milliseconds).

! Output resistance programming capability from −40 milliohm to 1 ohm.

! Four output compensation modes for a variety of wiring configurations.

♦ Extensive measurement capability on output 1

! dc voltage and current.

! rms and peak voltage and current.

! Three-range current measurement capability up to approximately 7.0 amperes.

! 16-bit measurement resolution.