Frequency Counter Mode; Electrical, Environmental And Physical Specifications; Electrical - Agilent Technologies Acqiris DP105 User Manual

For the U1071A-FAMILY the offset control range is reduced slightly. It is [–2.3 V, +2.3 V] unloaded, or [-1.15 V,
+1.15 V] into 50 Ω.

3.10. Frequency Counter mode

The DC140 and DC135 digitizers offer an optional Frequency Counter (FC) mode. This option allows the
measurement of the average frequency or period of a signal for frequencies up to 400 MHz over a user-selectable
aperture between 1 ms and 1000 s. The accuracy is limited by that of the timebase, < 2 ppm; the short term stability
is of ~ 0.1 ppm. The accuracy can be improved if an appropriate external reference clock is used. Frequencies in
excess of 100 MHz will be measured using the HF divide by four feature of the trigger circuit.
A digitizer with the FC option can also totalize the number of triggers during a chosen time interval or a user-
provided gate signal. This can be done for trigger frequencies under 125 MHz and for total counts up to 2
interval is measured using the same clock as is being used to drive the digitizer. The user gate signal has to be made
available on one of the Control I/O inputs.

3.11. Electrical, Environmental and Physical Specifications

3.11.1. Electrical

Model PCI DMA
Rev Transfer
Rate
(MB/s)
2.1 ~100
DP105
DP106
2.1 ~100
DP110
2.1 ~100
DP111
2.1 ~100
DP210
2.1 ~100
DP211
DP212
2.2 ~100
DP214
DP235
DP240
2.3 ~100
DP1400
U1071A002
U1071A004
U1071AHZ1
U1071AHZ2
U1071AHZ4
U1091AD28
2.1 ~100
DC110
2.2
DC135
DC135HZ
2.2
DC140
DC140HZ
2.2 ~100
DC211
DC211A
2.1 ~100
DC240
2.2 ~100
DC241
DC241A
2.1 ~100
DC265
2.1 ~100
DC270
User Manual: Agilent Acqiris 8-bit Digitizers
Max. Power
Consumption (W)
WITH
Standard
MEMORY
OPTION
14.4
15.7
18.0
21.8
18.0
24.4
16.3
16.7
~20 13.1
~20 14.2
45.7
40.9
45.7
37.1
40.4
Current Requirements (A)
(with Memory option)
+12 V
16.1 0.55
16.8 0.46
21.3 0.75
24.0 0.6
21.3 0.75
27.3 0.8
20.3 0.09
18.6 0.7
14.6 0.46
17.1 0.46
52.5 1.5
46.4 1.3
52.5 1.5
43.0 1.2
51.7 1.2
+5 V +3.3 V
1.3(1.6) NA
1.7(1.9) NA
1.4 (2.0) NA
2.4 (2.8) NA
1.4 (2.0) NA
1.2 1.8 (2.6)
1.4 1.9(3.0)
1.1 0.4 (0.9)
0.46 1.1 (1.5)
0.46 1.4 (2.2)
2.6 3.0 (4.9)
3 2 (3.5)
2.6 3.0 (4.9)
2.5 1.9 (3.5)
2.5 2.8 (5.9)
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. The time
-12 V
NA
0.02
0.03
0.05
0.05
0.05
0.04
NA
0.04
0.04
0.05
NA
0.05
0.05
0.05