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Model 8210A-2-5
IM-377
Aeroflex / Weinschel
46
Example 5: Multiple Virtual Attenuators with Groups
In this example, we will use eight attenuators to create four virtual attenuators, and then assign these to two different
groups. The virtual attenuators will each be comprised of a Model 3200T-1 (127dB/1dB steps) and a Model 3201T-4
(1.2dB/0.1dB steps) to create a virtual 128.2dB/0.1dB step attenuator
Attenuator #1: Model 3200T-1, serial number 101
Attenuator #2: Model 3200T-1, serial number 102
Attenuator #3: Model 3200T-1, serial number 103
Attenuator #4: Model 3200T-1, serial number 104
Attenuator #5: Model 3201T-4, serial number 201
Attenuator #6: Model 3201T-4, serial number 202
Attenuator #7: Model 3201T-4, serial number 203
Attenuator #8: Model 3201T-4, serial number 204
We will use the names ’AT1’ thru ’AT8’ for these attenuators, ’CH1’ thru ’CH4’ for the four virtuals, and we will name
the two groups ’G1’ and ’G2’.
a. Assign names to the eight attenuators.
Send:
ASSIGN AT1 ’3200T-1’ 101
ASSIGN AT2 ’3200T-1’ 102
ASSIGN AT3 ’3200T-1’ 103
ASSIGN AT4 ’3200T-1’ 104
ASSIGN AT5 ’3201T-4’ 201
ASSIGN AT6 ’3201T-4’ 202
ASSIGN AT7 ’3201T-4’ 203
ASSIGN AT8 ’3201T-4’ 204
b. Assign the four virtual names.
Send:
ASSIGN ATTN CH1 AT1 AT5 ; combine AT1 and AT5
ASSIGN ATTN CH2 AT2 AT6
ASSIGN ATTN CH3 AT3 AT7
ASSIGN ATTN CH4 AT4 AT8
c. Assign the two group names
Send:
GROUP G1 CH1 CH2 ; group 1 is AT1, AT5, AT2, and AT6
GROUP G2 CH3 CH4 ; group 2 is AT3, AT7, AT4, and AT8
d. Save these names in the non-volatile EEPROM memory.
Send:
SAVE ASSIGN
SAVE ASSIGN ATTN
SAVE
GROUP
e. Rerun the device assignment to associate the newly defined names with the attenuators.
Send:
REASSIGN
The channels may now be programmed using the following commands as examples:
ATTN AT1 70 ; sets the 1st attenuator (serial number 101) to 70 dB
ATTN CH1 5.2 ; sets the virtual attenuator CH1 to 5.2 dB (AT1=5 dB, AT5=0.2 dB)
ATTN G1 32.1 ; sets each of the virtual attenuators (CH1 and CH2) in group G1 to 32.1 dB
ATTN G2 20 ; sets each of the virtual attenuators (CH3 and CH4) in group G2 to 20 dB
REF G2 ; sets the reference value for group G2 to current setting (20 dB)
RELATTN G2 -5.00 ; sets the relative attenuation for group G2 to 5 dB below reference value
(15 dB)
Содержание 8210A-2-5
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