Programming instructions

Specifications 11
Digital I/O Modules The digital I/O modules available with Agilent 3499A/B/C include: Agilent
N2263A 32-bit digital I/O, Agilent 44474A 16-bit digital I/O module and
the 16-bit digital I/O on both the Agilent N2264A/65A multifunction
modules. The specifications are listed in the table below.
ITEMS SPECIFICATIONS
Agilent N2263A/64A/65A
a
Agilent 44474A
I/O LINES
Bit Number: 32/16/16 16
Maximum Voltage Line-Chassis: + 42 V dc + 30 V dc
Maximum Sink Current Per Bit: 600 mA 125 mA
Output Characteristics Vout (high):
Vout (low):
I (low):
≥ 2.4 V @ I ≤ 10 mA output
≤ 0.8 V @ I ≤ 600 mA input
N/A
≥ 2.4 V @ I ≤ 8 mA output
≤ 0.4 V @ I ≤ 16 mA input
= 125 mA @ Vout (low) ≤ 1.25 V
I (low) is fused at 250 mA
Input Characteristics Vin (high):
Vin (low):
≥ 2.0 V
≤ 0.8 V
≥ 2.0 V
≤ 0.8 V
HANDSHAKE LINES
Maximum Voltage Line-Chassis: + 5 V dc + 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)
≥ 2.4 V @ I ≤ 400 µA output
≤ 0.5 V @ I ≤ 2 mA input
N/A
Input Characteristics Vin (high):
Vin (low):
≥ 2.0 V
≤ 0.8 V
≥ 2.0 V
≤ 0.8 V
External Increment (EI)
b
:
N/A Advance Agilent 3499A to next
programmed configuration on
falling edge of TTL pulse, 0.25
µsec minimum width.
Channel Closed (CC)
c
:
N/A Indicates completion of new
configuration; TTL pulse, 10 µsec
minimum width.
a. Both the Agilent N2264A and N2265A are multifunction modules, the specifications listed in this table are for the 16-bit digital
I/O function on the Agilent N2264A and N2265A.
b. Both EI and CC lines are used for external controlled scanning. This item is for Agilent 44474A only.
c. When the next channel closes, the Agilent 44474A outputs a CC pulse to trigger the voltmeter. This item is for Agilent 44474A
only.