81101A 1

Level/Pulse Performance Characteristics Level specifications are valid after a 30 ns typical settling time.

81101A

Amplitude

50 Ω into 50 Ω

100 mVpp to 10.0 Vpp

1 kΩ into 50 Ω

200 mVpp to 20.0 Vpp

Level window

50 Ω into 50 Ω

-10.0 V to +10.0 V

1 kΩ into 50 Ω

-20.0 V to +20.0 V

Accuracy

50 Ω into 50 Ω

± (3% + 75 mV)

1 kΩ into 50 Ω

± (3% + 150 mV)^[1]

Resolution

50 Ω into 50 Ω

10 mV

1 kΩ into 50 Ω

20 mV

Output connectors

BNC single-ended

Source Impedance

Selectable 50 Ω or 1 kΩ

Accuracy

Typ. ± 1%

Max. external voltage

± 24 V

Short circuit current

±400 mA max.

Base line noise

10 mV RMS typ.

Overshoot/preshoot/ringing

± 5% of amplitude ± 20 mV

[1] In ±19 V level window.

Level parameters:

Can be entered as voltage or current, as high and low level, or as offset and amplitude.

Load compensation:

The actual load value can be entered (for loads ≠ 50 Ω) to display actual output values.

On/off:

Relays connect/disconnect output (HiZ).

Normal/complement:

Selectable

Limit:

Programmable high and low levels can be limited to protect the device-under-test.

Trigger Modes

Continuous:

Continuous pulses, double pulses, or bursts (single or double pulses).

External triggered:

Each active input transition (rising, falling or both) generates a single or double pulse or burst.

External gated:

The active input level (high or low) enables pulses, double pulses, or bursts. The last
single/double pulse or burst is always completed.

External width:

The pulse shape can be recovered, while period and width of an external input signal are
maintained. Levels and transitions can be set.

Manual:

Simulates an external input signal.

Internal triggered:

Internal PLL replaces an external trigger source.

Inputs and Outputs Clock input/PLL reference and external

input:

One input (BNC connector at rear panel) is used for clock input or alternatively for the PLL.

PLL Reference:

The internal PLL is locked to an external 5 MHz or 10 MHz reference frequency.

Clock input:

The output period is determined by the signal at CLK input

Ext. input:

Used for trigger, gate, or external width.

Input impedance:

50 Ω/10 kΩ selectable

Threshold:

-10 V to +10 V

Max. input voltage:

±15 Vpp

Sensitivity:

≤300 mVpp typical

Input transitions:

<100 ns

Frequency:

Dc to 50 MHz

Minimum pulsewidth:

10 ns

Strobe output and trigger output

Strobe:

Marks the beginning of each burst

Trigger format:

One pulse per period with 50% duty cycle typical

External mode:

9 ns typical

Level:

TTL or ECL selectable

Output impedance:

50 Ω typical

Max. external voltage:

-2 V/+7 V

Transition times:

1.0 ns typical for TTL, 600 ps typical for ECL

User Interface

Overprogramming:

Values can be entered, exceeding the specified range, to fully exploit the hardware limits

Setting check:

Warning messages indicate potentially conflicting parameters due to inaccuracy. Error
messages indicate conflicting parameters.

Help key:

Displays a context sensitive message.

Autoset key:

Resolves all timing conflicts.

Non-volatile memory:

The current setting is saved on power-down. Up to nine user settings and one fixed default
setting are stored in the instrument.

Memory card:

99 settings can be stored on a 1 MB PCMCIA card (MS-DOS).

Remote Control:

Operates according to IEEE standard 488.2, 1987 and SCPI 1992.0

Function Code:

SH1,AH1,T6,L4,SR1, RL1,PP0,DC1,DT1,C0

Programming times:

All checks and display off

ASCII command	Typical exec. time
One parameter or mode	30 ms typical
Recall setting	250 ms typical

Typical delay times Agilent 81101A

Instrument mode	From	To	Typical value
External width	EXT. INPUT	STROBE/TRIGGER OUT	8.5 ns
		OUTPUT 1/OUTPUT 2	22.5 ns
All other modes	EXT. INPUT/CLK INPUT	STROBE/TRIGGER OUT	12.0 ns
		OUTPUT 1/OUTPUT 2	29 ns
	STROBE/TRIGGER OUT	OUTPUT 1/OUTPUT 2	17 ns

General

Operating temperature:

0°C to +55°C

Storage temperature:

-40°C to +70°C

Humidity:

95% r.h. up to 40°C ambient temperature

EMC:

Conforms to EN50082-1, EN55011, Class B

Noise emission:

5.7 bel typical

Battery:

Lithium CR2477-N

Safety:

IEC1010, CSA1010

Power requirements:

100-240 Volts ac, ± 10%, 50-60 Hz

100-120 Volts ac, ± 10%, 400 Hz

Power consumption:

300 VA max.

Max. dimensions (H x W x D):

89 mm x 426 mm x 521 mm

Weight:

9.2 kg net, 13.8 kg shipping

Recalibration period:

One year recommended

Warranty:

Three years standard