TB 9-6625-2107-24
Table 5. Range Accuracy
Test instrument
Calibrator
Adjustments
RANGE
Error display
(VOLTS)
Meter
indications
Initial output
( %)
(R)
switch settings
indications
Voltage
Frequency
30
mV
3
30
mV
20
Hz
4.0
A2R59 (R)
30
mV
3
30
mV
80
Hz
2.0
---
1
30
mV
---
30
mV
1.0
kHz
N/A
---
30
mV
3
30
mV
800
kHz
1.0
---
Set calibrator to STANDBY and remove ac divider from setup3
1
1
1.0
V
400
Hz
1.0
A1R7 (R)
11
---
1.0
V
1
kHz
N/A
---
1
1
1.0
V
100
kHz
1.0
A1C2 (R)
3
3
3
V
1.0
kHz
1.0
---
10
1
10
V
1.0
kHz
1.0
---
30
3
30
V
1.0
kHz
1.0
---
100
1
100
V
1.0
kHz
1.0
---
300
3
300
V
1.0
kHz
1.0
---
1Record
2Connect
ac divider INPUT (p/o calibrator) to calibrator OUTPUT terminal and ac divider OUTPUT to TI INPUT terminal.
3Connect calibrator OUTPUT terminal to TI INPUT terminal.
14. Frequency Response
a. Performance Check
(1) Connect TI INPUT to calibrator WIDEBAND OUTPUT and press calibrator W
BND pushbutton.
(2) Set TI RANGE switch to 30 MV.
(3) Set calibrator FREQUENCY to 1 kHz and AMPLITUDE for an initial 30 mV
output. Adjust calibrator output AMPLITUDE for a TI indication equal to value recorded
in table 5 for 30 mV (1 kHz) to establish a reference. Press calibrator NEW REF pushbutton.
(4) Set calibrator FREQUENCY to 4 MHz and output AMPLITUDE for a TI
meter indication of 30 mV. Calibrator Error display indication will be within 4.0 percent,
if not, set calibrator output amplitude to reference set in (3) above and adjust A2C36
(4 MHZ 30 MV CAL) (fig. 2) for TI indication of 30 mV (R).
(5) Repeat technique of (4) above using calibrator frequency of 1 MHz. Calibrator
Error display indication will be within 1 percent.
(6) Set TI RANGE switch to 1 VOLT, adjust calibrator output AMPLITUDE for
1 V, and repeat technique of (3) and (4) above. Calibrator Error display indication with be
within 4%.
b. Adjustments. No further adjustments can be made.
15. Final Procedure
a. Deenergize and disconnect all equipment.
b. Annotate and affix DA label/form in accordance with TB 750-25.
11(12 Blank)
