3
Level/Pulse Performance Characteristics
Level specifications are valid after a 5 ns (HP 81112A) or 30 ns (HP 81111A/HP 81105A) typical settling time.
Mainframe HP 81104A HP 81110A HP 81110A
Output module HP 81105A HP 81111A HP 81112A
Amplitude 50
Ω
into 50
Ω
100 mVpp to 10.0 Vpp 100 mVpp to 3.8 Vpp
1 K
Ω
into 50
Ω
200 mVpp to 20.0 Vpp N/A
Level window 50
Ω
into 50
Ω
-10.0 V to +10.0 V -20 V to +3.8 V
1 K
Ω
into 50
Ω
-20.0 V to +20.0 V N/A
Accuracy 50
Ω
into 50
Ω±
(3% + 75 mV)
±
(1% + 50 mV)
±
(2% + 50 mV)
1 K
Ω
into 50
Ω±
(5% + 150 mV)
[1]
±
(1% + 100 mV)
[1]
N/A
Resolution 50
Ω
into 50
Ω
10 mV 10 mV
1 K
Ω
into 50
Ω
20 mV N/A
Output connectors BNC single-ended BNC differential
Source impedance Selectable 50
Ω
or 1 K
Ω
50
Ω
only
Accuracy Typ.
±
1%
Max. external voltage
±
24 V -2.2 V to +5.5 V
Short circuit current
±
400 mA max. -84 mA to +152 mA
(doubles for channel addition)
Dynamic crosstalk < 0.1% typ.
Baseline noise 10 mV RMS typ. 4 mV RMS typ.
Overshoot/preshoot/ringing
±
5% of amplitude
±
20 mV
±
5% of amplitude
±
50 mV
Note:
[1] In ± 19 V level window.
Level parameters: voltage or
current, high or low level, offset
or amplitude.
Load compensation: the actual
load value can be entered (for
loads ≠ 50 Ω) to display actual
output values. (Applies to the
HP 81105A and HP 81111A only).
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.
Channel Addition
If the instrument is equipped with 2 output modules, channel 2 can be added to channel 1 internally. In this
case the second output is disabled. The additional fixed delay on the second channel is typ. 2.5 ns. The
following parameters differ from the above specifications if two output modules (HP 81105A/HP 81111A)
are added.
Mainframe HP 81104A with two HP 81105A HP 81110A with two HP 81111A
output modules output modules
Amplitude 50
Ω
into 50
Ω
100 mVpp to 20.0 Vpp
1 K
Ω
into 50
Ω
200 mVpp to 20.0 Vpp
Source impedance Selectable from 50
Ω
or 1 K
Ω
Level window 50
Ω
into 50
Ω
-20.0 V to +20.0 V
1 K
Ω
into 50
Ω
-20.0 V to +20.0 V
Max. frequency 50
Ω
channel 60 MHz typ.
1 K
Ω
channel 15 MHz typ.
Min. transitions 50
Ω
channel 2 ns typ. (channel one) 5 ns typ. (channel two)
1 K
Ω
channel 20 ns typ. both channels
(28 pagine)
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