Programming instructions

Specifications 3
Plug-in Modules Specifications
Multiplexer (MUX)
Modules
The MUX modules available with Agilent 3499A/B/C include: Agilent
N2260A, 44470A/D, N2266A, N2268A and N2270A. Specifications of
these MUX modules are listed in the following tables.
ITEMS SPECIFICATIONS
Agilent N2260A Agilent 44470A Agilent 44470D
INPUT CHARACTERISTICS
Total Channels: 80 1-wire; or 40 2-wire;
or dual 20 2-wire; or 20 4-wire
10 (2-wire) 20 (2-wire)
Maximum Voltage Terminal-Terminal
or
Terminal-Chassis:
200 V, dc or ac rms 250 V, dc or ac rms 250 V, dc or ac rms
Maximum Current Per Channel: 1 A, dc or ac rms 2 A, dc or ac rms 2 A, dc or ac rms
Per Module: 2A, dc or ac rms 2 A, dc or ac rms 2 A, dc or ac rms
Maximum Power Per Channel: 60 W dc; 62.5 VA ac 60 W dc; 500 VA ac 60 W dc; 125 VA ac
Per Module: 120 W dc; 125 VA ac 60 W dc; 500 VA ac 60 W dc; 125 VA ac
Maximum Overvoltage Transients: N/A 1400 V
pk
1400 V
pk
Thermal Offset: < 3 µV< 3 µV differential
or single-ended
< 3 µV differential
or single-ended
Initial Closed Channel Resistance: < 1 Ω < 1 Ω < 1 Ω
Relay Life:
Mechanical: 10
8
(at 36000
operations/hour)
Electrical: 5 x 10
5
(1A load)
10
8
(dry load of < 300 mA & < 10 V)
10
5
(maximum rated load)
Maximum Scan Rate: 80 Chans/sec 43 Chans/sec 43 Chans/sec
DC ISOLATION (with terminal block)
Open Channel,
Channel-Channel
(with 1 channel closed)
< (40
o
C, 50% RH): > 10
10
Ω
< (40
o
C, 80% RH): > 10
9
Ω
< (40
o
C, 60% RH): > 10
11
Ω
< (40
o
C, 95% RH): > 10
9
Ω
< (40
o
C, 60% RH): > 10
11
Ω
< (40
o
C, 95% RH): > 5x10
9
Ω
HI-LO
(with 1 channel closed)
< (40
o
C, 50% RH): > 10
10
Ω
< (40
o
C, 80% RH): > 10
9
Ω
< (40
o
C, 60% RH): > 10
10
Ω
< (40
o
C, 95% RH): > 10
8
Ω
< (40
o
C, 60% RH): > 5x10
10
Ω
< (40
o
C, 95% RH): > 10
9
Ω
Channel-Chassis
(with 1 channel closed)
< (40
o
C, 50% RH): > 10
10
Ω
< (40
o
C, 80% RH): > 10
9
Ω
< (40
o
C, 60% RH): > 10
10
Ω
< (40
o
C, 95% RH): > 5x10
8
Ω
< (40
o
C, 60% RH): > 5x10
10
Ω
< (40
o
C, 95% RH): > 10
9
Ω
AC ISOLATION / PERFORMANCE
a
(without terminal block)
Capacitance
(with 1 channel closed)
Open Channel,
Channel-Channel:
HI-LO:
Channel-Chassis:
< 7 pF (2-wire)
< 75 pF (2-wire)
< 150 pF (2-wire)
< 7 pF (dual 2-wire)
< 45 pF (dual 2-wire)
< 90 pF (dual 2-wire)
< 5 pF
< 27 pF
< 80 pF
< 7 pF
< 27 pF
< 80 pF
Insertion Loss
(with 50Ω termination)
100 kHz:
1 MHz:
10 MHz:
< 0.10 dB
< 0.20 dB
< 1.50 dB
< 0.20 dB
< 0.25 dB
< 0.50 dB
< 0.20 dB
< 0.25 dB
< 1.20 dB
Crosstalk
(with 50Ω termination)
100 kHz:
1 MHz:
10 MHz:
< -70 dB (2-wire)
< -50 dB (2-wire)
< -30 dB (2-wire)
< -40 dB (1-wire)
< -25 dB (1-wire)
N/A (1-wire)
< -73 dB
< -53 dB
< -33 dB
< -73 dB
< -53 dB
< -31 dB
a. With chassis of all instruments connected, and with the Low Terminal of the input connected to the Low Terminal of the output (either
directly or via Agilent 3499A/B/C switching channels).