TB 11-6625-2713-50
Table 1. Calibration Description - Continued
Test instrument parameters
Performance specifications
Trigger level:
External
3 volts minimum
External divided by 10
30 volts minimum
Internal
From ac line
Coupling
Triggering ac slope
From positive or negative going position of
trigger signal.
Internal trigger sensitivity
Ac
0.5 div of deflection, minimum 50 Hz or 50
MHz.
0.5 div of deflection, minimum dc to 50 MHz.
External trigger sensitivity:
Ac
50 mv peak to peak minimum 5 kHz to 50 MHz.
Low frequency reject
50 mv peak to peak minimum 5 kHz to 50 MHz.
50 mv peak to peak minimum 50 Hz to 50 kHz.
Dc
50 mv peak to peak minimum dc to 50 MHz.
SECTION II
EQUIPMENT REQUIREMENTS
4. Equipment Required. Table 2
identifies the
specific equipment used in
this
calibration procedure. Alternate items may be used by the calibrating activity when the
equipment listed in table 2 is not available. The items selected must be verified to perform
satisfactorily prior to use and must bear evidence of current calibration. The equipment
must meet or exceed the minimum use specifications listed in table 2. The accuracies listed
in table 2 provide a four-to-one ratio between the standard and TI.
5. Accessories Required. The
accessories listed in
table 3 are issued as
indicated in
paragraph 4 above, and
are to be
used in this
calibration procedure. When necessary, these
items may be substituted by equivalent items unless specifically prohibited.
Table 2. Minimum Specification of Equipment Required
Common name and/or official
Manufacturer, model, and,
Item
nomenclature
Minimum use specifications
part number Level A
A1
Range: 105 To 125 Vac
General Radio Model
W10MT3AS3 (7910809)
Accuracy: 1%
A2
Ac Calibrator (Standard Ac
Range: 10.61 mV To 21.21 V
Hewlett-Packard, Model 745A-
Calibration (Precision)
rms
C90 (MIS-10342, Type 1)
Accuracy: 0.75%
A3
Range: -1200 To +135 Vdc; 0 To Dana, Model 5703-S-2127
1 Vac
(7912606) w/HV Probe
(7911350)
Accuracy: 0.05%
A4
Range: 5 kHz To 4 MHz 15 mV Hewlett-Packard, Model 652A
Frequency
To 12 V rms
(MIS-10224)
A5
Range: 5 kHz To 1 MHz; 5 mV
Tektronix, Type 106 (MIS-
To 12 mV p-p.
10284-1)
A6
Range: 1 To 50 MHz
Tektronix, Type 184 MOD146B
(7912042-1)
4