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Chapter 9 Specifications
N2265A Multifunction Module
9
16-bit Digital I/O Function
AC ISOLATION / PERFORMANCE
a
(without terminal block)
Capacitance:
(with 1 channel closed)
Open Channel, Channel-Channel:
HI-LO:
Channel-Chassis:
< 7 pF
< 25 pF
< 40 pF
Insertion Loss:
(with 50
Ω
termination)
100 kHz:
1 MHz:
10 MHz:
< 0.10 dB
< 0.20 dB
< 0.60 dB
Crosstalk:
(with 50
Ω
termination)
100 kHz:
1 MHz:
10 MHz:
< -76 dB
< -56 dB
< -33 dB
a. With chassis of all instruments connected, and with Lo Terminal of the input connected to Lo Terminal of the output
(either directly or via the 3499A/B/C switching channels).
I/O LINES
Number of Bits:
16
Maximum Voltage:
Line-Chassis: + 42 V dc
Maximum Sink Current:
Per Bit: 600 mA
Output Characteristics:
Vout (high):
Vout (low):
≥ 2.4 V @ I ≤ 10 mA output
≤ 0.8 V @ I ≤ 600 mA input
Input Characteristics:
Vin (high):
Vin (low):
≥ 2.0 V
≤ 0.8 V
HANDSHAKE LINES
Maximum Voltage:
Line-Chassis: +5 V dc
Output Characteristics:
Vout (high):
Vout (low):
Iout (low):
≥ 2.4 V @ I ≤ 400 µA output
≤ 0.5 V @ I ≤ 1 mA input
< 25 mA (when shorted to +5 V)
Input Characteristics:
Vin (high):
Vin (low):
≥ 2.0 V
≤ 0.8 V
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